{"schema_version":1,"layer":"air","reviewed_on":"2026-10-28","coverage_note":"Generator counts documented in selected permits, not a complete state or national count. A construction or operation permit does not prove equipment installation, operating hours, measured emissions or a data center opening.","items":[{"id":"air-vt-emergency-rule-20261025","kind":"permit_context","subject":"Vermont engine classification and emergency rule boundaries","state_codes":["vt"],"scope":"Exact300horsepower boundary, state emergency conditions and unresolved guidance aggregate difference.","fields":{"status":{"value":"program","source_ids":["vt-air-current-rules-20261025","vt-rice-guidance-20261025"],"scope":"Selected state rule and agency context; guidance differences preserved, no individual exemption or actual operation.","locator":"5 101;5 4016c;5 271a; agency engine guidance selected sections."},"vt_engine_basis":{"value":"Selected state engine rule and guidance wording differences, not blanket permit exemption","source_ids":["vt-air-current-rules-20261025","vt-rice-guidance-20261025"],"scope":"Selected state rule and agency context; guidance differences preserved, no individual exemption or actual operation.","locator":"5 101;5 4016c;5 271a; agency engine guidance selected sections."},"current_compilation":{"value":"Official index identifies air rules effective December16 2022. Selected definitions and classification reviewed, not full rulebook.","source_ids":["vt-air-current-index-20261025","vt-air-current-rules-20261025"],"scope":"Selected state rule and agency context; guidance differences preserved, no individual exemption or actual operation.","locator":"5 101;5 4016c;5 271a; agency engine guidance selected sections."},"rule_size_gate":{"value":"Rule5 4016c classifies stationary reciprocating engines at300brake horsepower or greater, any fuel, except emergency use engines for purposes of5 501.","source_ids":["vt-air-current-rules-20261025"],"scope":"Selected state rule and agency context; guidance differences preserved, no individual exemption or actual operation.","locator":"5 101;5 4016c;5 271a; agency engine guidance selected sections."},"exact_size_boundary":{"value":"Guidance introductory nonemergency greater300bhp wording differs rule300or greater. Exactly300falls within selected rule classification, subject to other applicable provisions.","source_ids":["vt-air-current-rules-20261025","vt-rice-guidance-20261025"],"scope":"Selected state rule and agency context; guidance differences preserved, no individual exemption or actual operation.","locator":"5 101;5 4016c;5 271a; agency engine guidance selected sections."},"emergency_routine_gate":{"value":"State5 101definition permits up to100hours per year routine testing and maintenance plus defined emergency purposes; not measured operation.","source_ids":["vt-air-current-rules-20261025"],"scope":"Selected state rule and agency context; guidance differences preserved, no individual exemption or actual operation.","locator":"5 101;5 4016c;5 271a; agency engine guidance selected sections."},"emergency_supply":{"value":"Usual power, heat or lighting temporarily unavailable for reasons beyond owner or operator reasonable control.","source_ids":["vt-air-current-rules-20261025"],"scope":"Selected state rule and agency context; guidance differences preserved, no individual exemption or actual operation.","locator":"5 101;5 4016c;5 271a; agency engine guidance selected sections."},"emergency_iso":{"value":"ISO determines power capacity deficiency and implements voltage reduction of5percent or more of normal operating voltage. Both conditions apply.","source_ids":["vt-air-current-rules-20261025"],"scope":"Selected state rule and agency context; guidance differences preserved, no individual exemption or actual operation.","locator":"5 101;5 4016c;5 271a; agency engine guidance selected sections."},"emergency_pumping":{"value":"Fire or flood makes water pumping necessary to minimize property damage.","source_ids":["vt-air-current-rules-20261025"],"scope":"Selected state rule and agency context; guidance differences preserved, no individual exemption or actual operation.","locator":"5 101;5 4016c;5 271a; agency engine guidance selected sections."},"guidance_aggregate":{"value":"Agency guidance says emergency exemption only when facility engine aggregate less2000bhp. Selected5 4016c emergency exclusion does not print this aggregate gate. Relationship remains unresolved, not silently generalized.","source_ids":["vt-air-current-rules-20261025","vt-rice-guidance-20261025"],"scope":"Selected state rule and agency context; guidance differences preserved, no individual exemption or actual operation.","locator":"5 101;5 4016c;5 271a; agency engine guidance selected sections."},"other_law_boundary":{"value":"Selected classification exclusion concerns5 501and is not proof of exemption from every state or federal duty. State emergency definition is not federal demand response authorization.","source_ids":["vt-air-current-rules-20261025","vt-rice-guidance-20261025"],"scope":"Selected state rule and agency context; guidance differences preserved, no individual exemption or actual operation.","locator":"5 101;5 4016c;5 271a; agency engine guidance selected sections."},"installation_notice":{"value":"Guidance requires notice to AQCD before engine installation, including engine make, model, horsepower, generator rating if applicable, manufacturing year and emission certification.","source_ids":["vt-rice-guidance-20261025"],"scope":"Selected state rule and agency context; guidance differences preserved, no individual exemption or actual operation.","locator":"5 101;5 4016c;5 271a; agency engine guidance selected sections."},"engine_nameplate":{"value":"Guidance distinguishes engine nameplate from generator nameplate and requests engine nameplate photograph.","source_ids":["vt-rice-guidance-20261025"],"scope":"Selected state rule and agency context; guidance differences preserved, no individual exemption or actual operation.","locator":"5 101;5 4016c;5 271a; agency engine guidance selected sections."},"standard_boundary":{"value":"Selected5 271a applies Tier2state standards to engines450bhp or greater installed on or after July1 2007including emergency use. Individual certification or federal compliance not established.","source_ids":["vt-air-current-rules-20261025"],"scope":"Selected state rule and agency context; guidance differences preserved, no individual exemption or actual operation.","locator":"5 101;5 4016c;5 271a; agency engine guidance selected sections."},"scope_boundary":{"value":"No full regulatory inventory, specific project eligibility, federal emergency definition or actual installed fleet reviewed.","source_ids":["vt-air-current-rules-20261025"],"scope":"Selected state rule and agency context; guidance differences preserved, no individual exemption or actual operation.","locator":"5 101;5 4016c;5 271a; agency engine guidance selected sections."},"individual_eligibility":{"value":null,"source_ids":["vt-air-current-rules-20261025"],"scope":"Selected state rule and agency context; guidance differences preserved, no individual exemption or actual operation.","locator":"5 101;5 4016c;5 271a; agency engine guidance selected sections.","unknown_reason":"No individual determination, measured hours, installed fleet or exact record match reviewed."},"actual_installed_equipment":{"value":null,"source_ids":["vt-air-current-rules-20261025"],"scope":"Selected state rule and agency context; guidance differences preserved, no individual exemption or actual operation.","locator":"5 101;5 4016c;5 271a; agency engine guidance selected sections.","unknown_reason":"No individual determination, measured hours, installed fleet or exact record match reviewed."},"actual_operation_hours":{"value":null,"source_ids":["vt-air-current-rules-20261025"],"scope":"Selected state rule and agency context; guidance differences preserved, no individual exemption or actual operation.","locator":"5 101;5 4016c;5 271a; agency engine guidance selected sections.","unknown_reason":"No individual determination, measured hours, installed fleet or exact record match reviewed."},"atlas_record_id":{"value":null,"source_ids":["vt-air-current-rules-20261025"],"scope":"Selected state rule and agency context; guidance differences preserved, no individual exemption or actual operation.","locator":"5 101;5 4016c;5 271a; agency engine guidance selected sections.","unknown_reason":"No individual determination, measured hours, installed fleet or exact record match reviewed."}}},{"id":"air-egrid-state-2023-vt","subject":"Vermont historical2023 electricity-generation emissions","kind":"emissions_context","state_codes":["vt"],"scope":"EPA eGRID2023 revision2 state electricity-generation emissions context,ST23 worksheet. Historical2023,not current2026 conditions or data center facility emissions. Annual NOx,SO2 andCO2 totals in source tons are distinct from source-reported total output rates in lb/MWh;CO2 is not CO2 equivalent. Annual net generation is MWh,not installed capacity or customer use. Rates are not marginal emissions,ambient concentrations,health effects or emissions factors allocated to a data center. No tons-to-tonnes conversion,rate recomputation,facility join or causal data center inference. State generation context does not establish the mix delivered to consumers. Puerto Rico source row is outside this51state/DC review,not absence.","fields":{"status":{"value":"historical","source_ids":["epa-egrid2023-states-rev2"],"scope":"EPA eGRID2023 revision2 state electricity-generation emissions context,ST23 worksheet. Historical2023,not current2026 conditions or data center facility emissions. Annual NOx,SO2 andCO2 totals in source tons are distinct from source-reported total output rates in lb/MWh;CO2 is not CO2 equivalent. Annual net generation is MWh,not installed capacity or customer use. Rates are not marginal emissions,ambient concentrations,health effects or emissions factors allocated to a data center. No tons-to-tonnes conversion,rate recomputation,facility join or causal data center inference. State generation context does not establish the mix delivered to consumers. Puerto Rico source row is outside this51state/DC review,not absence.","locator":"ST23 Data Year column"},"egrid_report_year":{"value":"2023","source_ids":["epa-egrid2023-states-rev2"],"scope":"EPA eGRID2023 revision2 state electricity-generation emissions context,ST23 worksheet. Historical2023,not current2026 conditions or data center facility emissions. Annual NOx,SO2 andCO2 totals in source tons are distinct from source-reported total output rates in lb/MWh;CO2 is not CO2 equivalent. Annual net generation is MWh,not installed capacity or customer use. Rates are not marginal emissions,ambient concentrations,health effects or emissions factors allocated to a data center. No tons-to-tonnes conversion,rate recomputation,facility join or causal data center inference. State generation context does not establish the mix delivered to consumers. Puerto Rico source row is outside this51state/DC review,not absence.","locator":"ST23 YEAR column"},"egrid_state_fips":{"value":"50","source_ids":["epa-egrid2023-states-rev2"],"scope":"EPA eGRID2023 revision2 state electricity-generation emissions context,ST23 worksheet. Historical2023,not current2026 conditions or data center facility emissions. Annual NOx,SO2 andCO2 totals in source tons are distinct from source-reported total output rates in lb/MWh;CO2 is not CO2 equivalent. Annual net generation is MWh,not installed capacity or customer use. Rates are not marginal emissions,ambient concentrations,health effects or emissions factors allocated to a data center. No tons-to-tonnes conversion,rate recomputation,facility join or causal data center inference. State generation context does not establish the mix delivered to consumers. Puerto Rico source row is outside this51state/DC review,not absence.","locator":"ST23 FIPSST column"},"egrid_state_basis":{"value":"EPA eGRID2023 revision2 state electricity-generation emissions context,ST23 worksheet. Historical2023,not current2026 conditions or data center facility emissions. Annual NOx,SO2 andCO2 totals in source tons are distinct from source-reported total output rates in lb/MWh;CO2 is not CO2 equivalent. Annual net generation is MWh,not installed capacity or customer use. Rates are not marginal emissions,ambient concentrations,health effects or emissions factors allocated to a data center. No tons-to-tonnes conversion,rate recomputation,facility join or causal data center inference. State generation context does not establish the mix delivered to consumers. Puerto Rico source row is outside this51state/DC review,not absence.","source_ids":["epa-egrid2023-states-rev2"],"scope":"EPA eGRID2023 revision2 state electricity-generation emissions context,ST23 worksheet. Historical2023,not current2026 conditions or data center facility emissions. Annual NOx,SO2 andCO2 totals in source tons are distinct from source-reported total output rates in lb/MWh;CO2 is not CO2 equivalent. Annual net generation is MWh,not installed capacity or customer use. Rates are not marginal emissions,ambient concentrations,health effects or emissions factors allocated to a data center. No tons-to-tonnes conversion,rate recomputation,facility join or causal data center inference. State generation context does not establish the mix delivered to consumers. Puerto Rico source row is outside this51state/DC review,not absence.","locator":"ST23 labels,codes,units and review scope"},"egrid_annual_net_generation":{"value":2480198.747,"source_ids":["epa-egrid2023-states-rev2"],"scope":"EPA eGRID2023 revision2 state electricity-generation emissions context,ST23 worksheet. Historical2023,not current2026 conditions or data center facility emissions. Annual NOx,SO2 andCO2 totals in source tons are distinct from source-reported total output rates in lb/MWh;CO2 is not CO2 equivalent. Annual net generation is MWh,not installed capacity or customer use. Rates are not marginal emissions,ambient concentrations,health effects or emissions factors allocated to a data center. No tons-to-tonnes conversion,rate recomputation,facility join or causal data center inference. State generation context does not establish the mix delivered to consumers. Puerto Rico source row is outside this51state/DC review,not absence.","locator":"ST23 VT row 50, STNGENAN (State annual net generation (MWh))","unit":"MWh","measurement_role":"reported_egrid_annual_net_generation","source_token":"2480198.747"},"egrid_annual_nox_emissions":{"value":208.497,"source_ids":["epa-egrid2023-states-rev2"],"scope":"EPA eGRID2023 revision2 state electricity-generation emissions context,ST23 worksheet. Historical2023,not current2026 conditions or data center facility emissions. Annual NOx,SO2 andCO2 totals in source tons are distinct from source-reported total output rates in lb/MWh;CO2 is not CO2 equivalent. Annual net generation is MWh,not installed capacity or customer use. Rates are not marginal emissions,ambient concentrations,health effects or emissions factors allocated to a data center. No tons-to-tonnes conversion,rate recomputation,facility join or causal data center inference. State generation context does not establish the mix delivered to consumers. Puerto Rico source row is outside this51state/DC review,not absence.","locator":"ST23 VT row 50, STNOXAN (State annual NOx emissions (tons))","unit":"tons","measurement_role":"reported_egrid_annual_nox_emissions","source_token":"208.49700000000001"},"egrid_annual_so2_emissions":{"value":48.197,"source_ids":["epa-egrid2023-states-rev2"],"scope":"EPA eGRID2023 revision2 state electricity-generation emissions context,ST23 worksheet. Historical2023,not current2026 conditions or data center facility emissions. Annual NOx,SO2 andCO2 totals in source tons are distinct from source-reported total output rates in lb/MWh;CO2 is not CO2 equivalent. Annual net generation is MWh,not installed capacity or customer use. Rates are not marginal emissions,ambient concentrations,health effects or emissions factors allocated to a data center. No tons-to-tonnes conversion,rate recomputation,facility join or causal data center inference. State generation context does not establish the mix delivered to consumers. Puerto Rico source row is outside this51state/DC review,not absence.","locator":"ST23 VT row 50, STSO2AN (State annual SO2 emissions (tons))","unit":"tons","measurement_role":"reported_egrid_annual_so2_emissions","source_token":"48.197000000000003"},"egrid_annual_co2_emissions":{"value":53300.219,"source_ids":["epa-egrid2023-states-rev2"],"scope":"EPA eGRID2023 revision2 state electricity-generation emissions context,ST23 worksheet. Historical2023,not current2026 conditions or data center facility emissions. Annual NOx,SO2 andCO2 totals in source tons are distinct from source-reported total output rates in lb/MWh;CO2 is not CO2 equivalent. Annual net generation is MWh,not installed capacity or customer use. Rates are not marginal emissions,ambient concentrations,health effects or emissions factors allocated to a data center. No tons-to-tonnes conversion,rate recomputation,facility join or causal data center inference. State generation context does not establish the mix delivered to consumers. Puerto Rico source row is outside this51state/DC review,not absence.","locator":"ST23 VT row 50, STCO2AN (State annual CO2 emissions (tons))","unit":"tons","measurement_role":"reported_egrid_annual_co2_emissions","source_token":"53300.218999999997"},"egrid_nox_total_output_rate":{"value":0.168,"source_ids":["epa-egrid2023-states-rev2"],"scope":"EPA eGRID2023 revision2 state electricity-generation emissions context,ST23 worksheet. Historical2023,not current2026 conditions or data center facility emissions. Annual NOx,SO2 andCO2 totals in source tons are distinct from source-reported total output rates in lb/MWh;CO2 is not CO2 equivalent. Annual net generation is MWh,not installed capacity or customer use. Rates are not marginal emissions,ambient concentrations,health effects or emissions factors allocated to a data center. No tons-to-tonnes conversion,rate recomputation,facility join or causal data center inference. State generation context does not establish the mix delivered to consumers. Puerto Rico source row is outside this51state/DC review,not absence.","locator":"ST23 VT row 50, STNOXRTA (State annual NOx total output emission rate (lb/MWh))","unit":"lb per MWh","measurement_role":"reported_egrid_nox_total_output_rate","source_token":"0.16800000000000001"},"egrid_so2_total_output_rate":{"value":0.039,"source_ids":["epa-egrid2023-states-rev2"],"scope":"EPA eGRID2023 revision2 state electricity-generation emissions context,ST23 worksheet. Historical2023,not current2026 conditions or data center facility emissions. Annual NOx,SO2 andCO2 totals in source tons are distinct from source-reported total output rates in lb/MWh;CO2 is not CO2 equivalent. Annual net generation is MWh,not installed capacity or customer use. Rates are not marginal emissions,ambient concentrations,health effects or emissions factors allocated to a data center. No tons-to-tonnes conversion,rate recomputation,facility join or causal data center inference. State generation context does not establish the mix delivered to consumers. Puerto Rico source row is outside this51state/DC review,not absence.","locator":"ST23 VT row 50, STSO2RTA (State annual SO2 total output emission rate (lb/MWh))","unit":"lb per MWh","measurement_role":"reported_egrid_so2_total_output_rate","source_token":"3.9E-2"},"egrid_co2_total_output_rate":{"value":42.981,"source_ids":["epa-egrid2023-states-rev2"],"scope":"EPA eGRID2023 revision2 state electricity-generation emissions context,ST23 worksheet. Historical2023,not current2026 conditions or data center facility emissions. Annual NOx,SO2 andCO2 totals in source tons are distinct from source-reported total output rates in lb/MWh;CO2 is not CO2 equivalent. Annual net generation is MWh,not installed capacity or customer use. Rates are not marginal emissions,ambient concentrations,health effects or emissions factors allocated to a data center. No tons-to-tonnes conversion,rate recomputation,facility join or causal data center inference. State generation context does not establish the mix delivered to consumers. Puerto Rico source row is outside this51state/DC review,not absence.","locator":"ST23 VT row 50, STCO2RTA (State annual CO2 total output emission rate (lb/MWh))","unit":"lb per MWh","measurement_role":"reported_egrid_co2_total_output_rate","source_token":"42.981000000000002"},"egrid_annual_ch4_emissions_lb":{"value":365680.773,"source_ids":["epa-egrid2023-states-rev2"],"scope":"Historical2023 EPA eGRID ST23 source-reported CH4,N2O,CO2 equivalent and ozone-season NOx context. Annual CH4/N2O totals are source lbs;CO2 equivalent total is source tons;total output rates are lb/MWh. CO2 equivalent differs from raw CO2; no global-warming-potential factor assumed or recomputed,no pounds/tons/metric-tonne conversion. Source-defined ozone-season NOx is not full-year NOx or an ambient ozone concentration. Annual and seasonal rates and totals remain separate,not summed across scopes. No marginal,facility,health-risk or attributable data center emissions inference.","locator":"ST23 VT row 50, STCH4AN (State annual CH4 emissions (lbs))","unit":"lbs","measurement_role":"reported_egrid_annual_ch4_emissions","source_token":"365680.77299999999"},"egrid_annual_co2e_emissions":{"value":64781.997,"source_ids":["epa-egrid2023-states-rev2"],"scope":"Historical2023 EPA eGRID ST23 source-reported CH4,N2O,CO2 equivalent and ozone-season NOx context. Annual CH4/N2O totals are source lbs;CO2 equivalent total is source tons;total output rates are lb/MWh. CO2 equivalent differs from raw CO2; no global-warming-potential factor assumed or recomputed,no pounds/tons/metric-tonne conversion. Source-defined ozone-season NOx is not full-year NOx or an ambient ozone concentration. Annual and seasonal rates and totals remain separate,not summed across scopes. No marginal,facility,health-risk or attributable data center emissions inference.","locator":"ST23 VT row 50, STCO2EQA (State annual CO2 equivalent emissions (tons))","unit":"tons","measurement_role":"reported_egrid_annual_co2e_emissions","source_token":"64781.997000000003"},"egrid_annual_n2o_emissions_lb":{"value":48016.955,"source_ids":["epa-egrid2023-states-rev2"],"scope":"Historical2023 EPA eGRID ST23 source-reported CH4,N2O,CO2 equivalent and ozone-season NOx context. Annual CH4/N2O totals are source lbs;CO2 equivalent total is source tons;total output rates are lb/MWh. CO2 equivalent differs from raw CO2; no global-warming-potential factor assumed or recomputed,no pounds/tons/metric-tonne conversion. Source-defined ozone-season NOx is not full-year NOx or an ambient ozone concentration. Annual and seasonal rates and totals remain separate,not summed across scopes. No marginal,facility,health-risk or attributable data center emissions inference.","locator":"ST23 VT row 50, STN2OAN (State annual N2O emissions (lbs))","unit":"lbs","measurement_role":"reported_egrid_annual_n2o_emissions","source_token":"48016.955000000002"},"egrid_ozone_season_nox_total_output_rate":{"value":0.169,"source_ids":["epa-egrid2023-states-rev2"],"scope":"Historical2023 EPA eGRID ST23 source-reported CH4,N2O,CO2 equivalent and ozone-season NOx context. Annual CH4/N2O totals are source lbs;CO2 equivalent total is source tons;total output rates are lb/MWh. CO2 equivalent differs from raw CO2; no global-warming-potential factor assumed or recomputed,no pounds/tons/metric-tonne conversion. Source-defined ozone-season NOx is not full-year NOx or an ambient ozone concentration. Annual and seasonal rates and totals remain separate,not summed across scopes. No marginal,facility,health-risk or attributable data center emissions inference.","locator":"ST23 VT row 50, STNOXRTO (State ozone season NOx total output emission rate (lb/MWh))","unit":"lb per MWh","measurement_role":"reported_egrid_ozone_season_nox_total_output_rate","source_token":"0.16900000000000001"},"egrid_extended_basis":{"value":"Historical2023 EPA eGRID ST23 source-reported CH4,N2O,CO2 equivalent and ozone-season NOx context. Annual CH4/N2O totals are source lbs;CO2 equivalent total is source tons;total output rates are lb/MWh. CO2 equivalent differs from raw CO2; no global-warming-potential factor assumed or recomputed,no pounds/tons/metric-tonne conversion. 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No marginal,facility,health-risk or attributable data center emissions inference.","locator":"ST23 field labels,report year and annual-versus-ozone-season units"},"egrid_ozone_season_nox_emissions":{"value":82.228,"source_ids":["epa-egrid2023-states-rev2"],"scope":"Historical2023 EPA eGRID ST23 source-reported CH4,N2O,CO2 equivalent and ozone-season NOx context. Annual CH4/N2O totals are source lbs;CO2 equivalent total is source tons;total output rates are lb/MWh. CO2 equivalent differs from raw CO2; no global-warming-potential factor assumed or recomputed,no pounds/tons/metric-tonne conversion. Source-defined ozone-season NOx is not full-year NOx or an ambient ozone concentration. Annual and seasonal rates and totals remain separate,not summed across scopes. No marginal,facility,health-risk or attributable data center emissions inference.","locator":"ST23 VT row 50, STNOXOZ (State ozone season NOx emissions (tons))","unit":"tons","measurement_role":"reported_egrid_ozone_season_nox_emissions","source_token":"82.227999999999994"},"egrid_co2e_total_output_rate":{"value":52.239,"source_ids":["epa-egrid2023-states-rev2"],"scope":"Historical2023 EPA eGRID ST23 source-reported CH4,N2O,CO2 equivalent and ozone-season NOx context. Annual CH4/N2O totals are source lbs;CO2 equivalent total is source tons;total output rates are lb/MWh. CO2 equivalent differs from raw CO2; no global-warming-potential factor assumed or recomputed,no pounds/tons/metric-tonne conversion. Source-defined ozone-season NOx is not full-year NOx or an ambient ozone concentration. Annual and seasonal rates and totals remain separate,not summed across scopes. No marginal,facility,health-risk or attributable data center emissions inference.","locator":"ST23 VT row 50, STC2ERTA (State annual CO2 equivalent total output emission rate (lb/MWh))","unit":"lb per MWh","measurement_role":"reported_egrid_co2e_total_output_rate","source_token":"52.238999999999997"},"egrid_ch4_total_output_rate":{"value":0.147,"source_ids":["epa-egrid2023-states-rev2"],"scope":"Historical2023 EPA eGRID ST23 source-reported CH4,N2O,CO2 equivalent and ozone-season NOx context. Annual CH4/N2O totals are source lbs;CO2 equivalent total is source tons;total output rates are lb/MWh. CO2 equivalent differs from raw CO2; no global-warming-potential factor assumed or recomputed,no pounds/tons/metric-tonne conversion. Source-defined ozone-season NOx is not full-year NOx or an ambient ozone concentration. Annual and seasonal rates and totals remain separate,not summed across scopes. No marginal,facility,health-risk or attributable data center emissions inference.","locator":"ST23 VT row 50, STCH4RTA (State annual CH4 total output emission rate (lb/MWh))","unit":"lb per MWh","measurement_role":"reported_egrid_ch4_total_output_rate","source_token":"0.14699999999999999"},"egrid_n2o_total_output_rate":{"value":0.019,"source_ids":["epa-egrid2023-states-rev2"],"scope":"Historical2023 EPA eGRID ST23 source-reported CH4,N2O,CO2 equivalent and ozone-season NOx context. Annual CH4/N2O totals are source lbs;CO2 equivalent total is source tons;total output rates are lb/MWh. CO2 equivalent differs from raw CO2; no global-warming-potential factor assumed or recomputed,no pounds/tons/metric-tonne conversion. Source-defined ozone-season NOx is not full-year NOx or an ambient ozone concentration. Annual and seasonal rates and totals remain separate,not summed across scopes. No marginal,facility,health-risk or attributable data center emissions inference.","locator":"ST23 VT row 50, STN2ORTA (State annual N2O total output emission rate (lb/MWh))","unit":"lb per MWh","measurement_role":"reported_egrid_n2o_total_output_rate","source_token":"1.9E-2"}}},{"id":"air-eia-state-emissions-2025-vt","kind":"emissions_context","subject":"Vermont historical power and useful thermal emissions2025 and2024","state_codes":["vt"],"scope":"EIA Table9.5 historical state2025 and2024 emissions estimates from energy consumption at conventional power and combined-heat-and-power plants. Includes electricity generation AND production of useful thermal output,not electricity-only emissions. Source unit is thousand metric tons,not eGRID source tons,pounds,CO2equivalent or emission intensity. Source CO2,SO2 and NOx are distinct pollutants,not summed as one climate measure. Displayed zero values may represent small values rounded to zero;no absence or zero-emissions certification. Retain displayed HTML precision;source says Excel cells provide additional precision,not adopted here. No direct eGRID trend or data center allocation,marginal emissions,ambient concentration,health risk,permit compliance,current2026 activity or Native facility joins.","fields":{"status":{"value":"historical","source_ids":["eia-epa2025-state-emissions"],"scope":"EIA Table9.5 historical state2025 and2024 emissions estimates from energy consumption at conventional power and combined-heat-and-power plants. Includes electricity generation AND production of useful thermal output,not electricity-only emissions. Source unit is thousand metric tons,not eGRID source tons,pounds,CO2equivalent or emission intensity. Source CO2,SO2 and NOx are distinct pollutants,not summed as one climate measure. Displayed zero values may represent small values rounded to zero;no absence or zero-emissions certification. Retain displayed HTML precision;source says Excel cells provide additional precision,not adopted here. No direct eGRID trend or data center allocation,marginal emissions,ambient concentration,health risk,permit compliance,current2026 activity or Native facility joins.","locator":"Table9.5 years2025 and2024"},"eia_emissions_basis":{"value":"EIA Table9.5 historical state2025 and2024 emissions estimates from energy consumption at conventional power and combined-heat-and-power plants. Includes electricity generation AND production of useful thermal output,not electricity-only emissions. Source unit is thousand metric tons,not eGRID source tons,pounds,CO2equivalent or emission intensity. Source CO2,SO2 and NOx are distinct pollutants,not summed as one climate measure. Displayed zero values may represent small values rounded to zero;no absence or zero-emissions certification. Retain displayed HTML precision;source says Excel cells provide additional precision,not adopted here. No direct eGRID trend or data center allocation,marginal emissions,ambient concentration,health risk,permit compliance,current2026 activity or Native facility joins.","source_ids":["eia-epa2025-state-emissions"],"scope":"EIA Table9.5 historical state2025 and2024 emissions estimates from energy consumption at conventional power and combined-heat-and-power plants. Includes electricity generation AND production of useful thermal output,not electricity-only emissions. Source unit is thousand metric tons,not eGRID source tons,pounds,CO2equivalent or emission intensity. Source CO2,SO2 and NOx are distinct pollutants,not summed as one climate measure. Displayed zero values may represent small values rounded to zero;no absence or zero-emissions certification. Retain displayed HTML precision;source says Excel cells provide additional precision,not adopted here. No direct eGRID trend or data center allocation,marginal emissions,ambient concentration,health risk,permit compliance,current2026 activity or Native facility joins.","locator":"Table9.5 header and methodological notes"},"eia_emissions_co2_2025":{"value":10.0,"source_ids":["eia-epa2025-state-emissions"],"scope":"EIA Table9.5 historical state2025 and2024 emissions estimates from energy consumption at conventional power and combined-heat-and-power plants. Includes electricity generation AND production of useful thermal output,not electricity-only emissions. Source unit is thousand metric tons,not eGRID source tons,pounds,CO2equivalent or emission intensity. Source CO2,SO2 and NOx are distinct pollutants,not summed as one climate measure. Displayed zero values may represent small values rounded to zero;no absence or zero-emissions certification. Retain displayed HTML precision;source says Excel cells provide additional precision,not adopted here. No direct eGRID trend or data center allocation,marginal emissions,ambient concentration,health risk,permit compliance,current2026 activity or Native facility joins.","locator":"Table9.5 Vermont row;co2;Year 2025","source_token":"10","unit":"thousand metric tons","measurement_role":"agency_estimated_generation_and_useful_thermal_emissions"},"eia_emissions_co2_2024":{"value":8.0,"source_ids":["eia-epa2025-state-emissions"],"scope":"EIA Table9.5 historical state2025 and2024 emissions estimates from energy consumption at conventional power and combined-heat-and-power plants. Includes electricity generation AND production of useful thermal output,not electricity-only emissions. Source unit is thousand metric tons,not eGRID source tons,pounds,CO2equivalent or emission intensity. Source CO2,SO2 and NOx are distinct pollutants,not summed as one climate measure. Displayed zero values may represent small values rounded to zero;no absence or zero-emissions certification. Retain displayed HTML precision;source says Excel cells provide additional precision,not adopted here. No direct eGRID trend or data center allocation,marginal emissions,ambient concentration,health risk,permit compliance,current2026 activity or Native facility joins.","locator":"Table9.5 Vermont row;co2;Year 2024","source_token":"8","unit":"thousand metric tons","measurement_role":"agency_estimated_generation_and_useful_thermal_emissions"},"eia_emissions_so2_2025":{"value":0.04,"source_ids":["eia-epa2025-state-emissions"],"scope":"EIA Table9.5 historical state2025 and2024 emissions estimates from energy consumption at conventional power and combined-heat-and-power plants. Includes electricity generation AND production of useful thermal output,not electricity-only emissions. Source unit is thousand metric tons,not eGRID source tons,pounds,CO2equivalent or emission intensity. Source CO2,SO2 and NOx are distinct pollutants,not summed as one climate measure. Displayed zero values may represent small values rounded to zero;no absence or zero-emissions certification. Retain displayed HTML precision;source says Excel cells provide additional precision,not adopted here. No direct eGRID trend or data center allocation,marginal emissions,ambient concentration,health risk,permit compliance,current2026 activity or Native facility joins.","locator":"Table9.5 Vermont row;so2;Year 2025","source_token":"0.04","unit":"thousand metric tons","measurement_role":"agency_estimated_generation_and_useful_thermal_emissions"},"eia_emissions_so2_2024":{"value":0.05,"source_ids":["eia-epa2025-state-emissions"],"scope":"EIA Table9.5 historical state2025 and2024 emissions estimates from energy consumption at conventional power and combined-heat-and-power plants. Includes electricity generation AND production of useful thermal output,not electricity-only emissions. Source unit is thousand metric tons,not eGRID source tons,pounds,CO2equivalent or emission intensity. Source CO2,SO2 and NOx are distinct pollutants,not summed as one climate measure. Displayed zero values may represent small values rounded to zero;no absence or zero-emissions certification. Retain displayed HTML precision;source says Excel cells provide additional precision,not adopted here. No direct eGRID trend or data center allocation,marginal emissions,ambient concentration,health risk,permit compliance,current2026 activity or Native facility joins.","locator":"Table9.5 Vermont row;so2;Year 2024","source_token":"0.05","unit":"thousand metric tons","measurement_role":"agency_estimated_generation_and_useful_thermal_emissions"},"eia_emissions_nox_2025":{"value":1.0,"source_ids":["eia-epa2025-state-emissions"],"scope":"EIA Table9.5 historical state2025 and2024 emissions estimates from energy consumption at conventional power and combined-heat-and-power plants. Includes electricity generation AND production of useful thermal output,not electricity-only emissions. Source unit is thousand metric tons,not eGRID source tons,pounds,CO2equivalent or emission intensity. Source CO2,SO2 and NOx are distinct pollutants,not summed as one climate measure. Displayed zero values may represent small values rounded to zero;no absence or zero-emissions certification. Retain displayed HTML precision;source says Excel cells provide additional precision,not adopted here. No direct eGRID trend or data center allocation,marginal emissions,ambient concentration,health risk,permit compliance,current2026 activity or Native facility joins.","locator":"Table9.5 Vermont row;nox;Year 2025","source_token":"1","unit":"thousand metric tons","measurement_role":"agency_estimated_generation_and_useful_thermal_emissions"},"eia_emissions_nox_2024":{"value":1.0,"source_ids":["eia-epa2025-state-emissions"],"scope":"EIA Table9.5 historical state2025 and2024 emissions estimates from energy consumption at conventional power and combined-heat-and-power plants. Includes electricity generation AND production of useful thermal output,not electricity-only emissions. Source unit is thousand metric tons,not eGRID source tons,pounds,CO2equivalent or emission intensity. Source CO2,SO2 and NOx are distinct pollutants,not summed as one climate measure. Displayed zero values may represent small values rounded to zero;no absence or zero-emissions certification. Retain displayed HTML precision;source says Excel cells provide additional precision,not adopted here. No direct eGRID trend or data center allocation,marginal emissions,ambient concentration,health risk,permit compliance,current2026 activity or Native facility joins.","locator":"Table9.5 Vermont row;nox;Year 2024","source_token":"1","unit":"thousand metric tons","measurement_role":"agency_estimated_generation_and_useful_thermal_emissions"}}}],"sources":{"vt-air-current-rules-20261025":{"url":"https://dec.vermont.gov/sites/dec/files/aqc/laws-regs/documents/Vermont_Air_Pollution_Control_Regulations.pdf","checked_at":"2026-10-25T03:09:04.924757+00:00","sha256":"59a651335e675e2661dbabb4d8b18e85f84b61ddd0704ac8de8cb093b5451921","title":"Vermont air rules selected engine provisions","publisher":"Vermont DEC","tier":"A","published_on":null,"date_note":"Official index lists December16 2022effective rule; exact online publication day unknown.","scope":"Only5 101emergency definition,5 4016c,5 271a text reviewed; frames10and134viewed. Not full rulebook.","establishes_status":["program"]},"vt-rice-guidance-20261025":{"url":"https://dec.vermont.gov/air-quality/permits/source-categories/stationary-reciprocating-internal-combustion-engines","checked_at":"2026-10-25T03:03:56.178966+00:00","sha256":"3130fe5a792fe7ddc67ccd1dae3f805522a0029dde39c0b2d5ded0bf72065ed5","title":"Vermont engine guidance","publisher":"Vermont DEC","tier":"A","published_on":null,"date_note":"Official index lists December16 2022effective rule; exact online publication day unknown.","scope":"Selected engine applicability, notification and state generator guidance reviewed; federal assertions not independently verified.","establishes_status":["program"]},"vt-air-current-index-20261025":{"url":"https://dec.vermont.gov/air-quality/laws-and-regulations","checked_at":"2026-10-25T03:08:53.876212+00:00","sha256":"8e7b1672f049ecf61e23827c45576bec43593c2ddf39bf1582f68762c289b9c1","title":"Vermont current air rule index","publisher":"Vermont DEC","tier":"A","published_on":null,"date_note":"Official index lists December16 2022effective rule; exact online publication day unknown.","scope":"Current air rule link and effective date only.","establishes_status":["program"]},"epa-egrid2023-states-rev2":{"url":"https://www.epa.gov/system/files/documents/2025-06/egrid2023_data_rev2.xlsx","title":"EPA eGRID2023 revision2 original workbook ST23 state emissions,generation and total output rates","publisher":"U.S. Environmental Protection Agency","published_on":null,"date_note":"Exact workbook publication day not established;2025-06 path is a storage folder,not an exact publication date.2023 is report year,not retrieval year.","checked_at":"2026-10-27T21:05:24.064631+00:00","sha256":"895cd81dd8662406189ad8adf5a2578dcb362cdb5cff7cca81b10ee6bd2447c6","raw_path":"/Users/shaunwilson/Documents/Data Centers Atlas/build/cache/layers-20261023/epa-egrid2023-data-rev2.bin","tier":"A","scope":"EPA eGRID2023 revision2 state electricity-generation emissions context,ST23 worksheet. Historical2023,not current2026 conditions or data center facility emissions. Annual NOx,SO2 andCO2 totals in source tons are distinct from source-reported total output rates in lb/MWh;CO2 is not CO2 equivalent. Annual net generation is MWh,not installed capacity or customer use. Rates are not marginal emissions,ambient concentrations,health effects or emissions factors allocated to a data center. No tons-to-tonnes conversion,rate recomputation,facility join or causal data center inference. State generation context does not establish the mix delivered to consumers. Puerto Rico source row is outside this51state/DC review,not absence. Download index identifies eGRID2023 revision2;only workbook metadata/shared strings/ST23 entries read,no whole-archive extraction.","establishes_status":["historical"]},"eia-epa2025-state-emissions":{"url":"https://www.eia.gov/electricity/annual/table.php?t=epa_09_05.html","publisher":"U.S. Energy Information Administration","title":"Electric Power Annual Table9.5 state power and CHP emissions2025 and2024","published_on":"2026-10-21","checked_at":"2026-10-28T02:40:42.051795+00:00","sha256":"36e6dbf2164041a56f6985a5fcac8357791d95eb82545bfc542aea095c38d5dd","raw_path":"/Users/shaunwilson/Documents/Data Centers Atlas/build/cache/layers-20261023/eia-epa2025-state-emissions-20261028.html","tier":"A","establishes_status":["historical"],"scope":"EIA Table9.5 historical state2025 and2024 emissions estimates from energy consumption at conventional power and combined-heat-and-power plants. Includes electricity generation AND production of useful thermal output,not electricity-only emissions. Source unit is thousand metric tons,not eGRID source tons,pounds,CO2equivalent or emission intensity. Source CO2,SO2 and NOx are distinct pollutants,not summed as one climate measure. Displayed zero values may represent small values rounded to zero;no absence or zero-emissions certification. Retain displayed HTML precision;source says Excel cells provide additional precision,not adopted here. No direct eGRID trend or data center allocation,marginal emissions,ambient concentration,health risk,permit compliance,current2026 activity or Native facility joins."}},"details":[{"id":"air-vt-emergency-rule-20261025","html":"<article><h3>Vermont engine classification and emergency rule boundaries</h3><p class=\"layer-scope\">Exact300horsepower boundary, state emergency conditions and unresolved guidance aggregate difference.</p><dl class=\"layer-fields\"><dt>Status</dt><dd>program<span class=\"layer-source\"><a href=\"https://dec.vermont.gov/sites/dec/files/aqc/laws-regs/documents/Vermont_Air_Pollution_Control_Regulations.pdf\">Vermont DEC</a>. Source: Publication date not stated. Checked: October 25, 2026.</span> <span class=\"layer-source\"><a href=\"https://dec.vermont.gov/air-quality/permits/source-categories/stationary-reciprocating-internal-combustion-engines\">Vermont DEC</a>. Source: Publication date not stated. Checked: October 25, 2026.</span> <p class=\"layer-scope\">Selected state rule and agency context; guidance differences preserved, no individual exemption or actual operation. Locator: 5 101;5 4016c;5 271a; agency engine guidance selected sections..</p></dd><dt>Vt engine basis</dt><dd>Selected state engine rule and guidance wording differences, not blanket permit exemption<span class=\"layer-source\"><a href=\"https://dec.vermont.gov/sites/dec/files/aqc/laws-regs/documents/Vermont_Air_Pollution_Control_Regulations.pdf\">Vermont DEC</a>. Source: Publication date not stated. Checked: October 25, 2026.</span> <span class=\"layer-source\"><a href=\"https://dec.vermont.gov/air-quality/permits/source-categories/stationary-reciprocating-internal-combustion-engines\">Vermont DEC</a>. Source: Publication date not stated. Checked: October 25, 2026.</span> <p class=\"layer-scope\">Selected state rule and agency context; guidance differences preserved, no individual exemption or actual operation. Locator: 5 101;5 4016c;5 271a; agency engine guidance selected sections..</p></dd><dt>Current compilation</dt><dd>Official index identifies air rules effective December16 2022. Selected definitions and classification reviewed, not full rulebook.<span class=\"layer-source\"><a href=\"https://dec.vermont.gov/air-quality/laws-and-regulations\">Vermont DEC</a>. Source: Publication date not stated. Checked: October 25, 2026.</span> <span class=\"layer-source\"><a href=\"https://dec.vermont.gov/sites/dec/files/aqc/laws-regs/documents/Vermont_Air_Pollution_Control_Regulations.pdf\">Vermont DEC</a>. Source: Publication date not stated. Checked: October 25, 2026.</span> <p class=\"layer-scope\">Selected state rule and agency context; guidance differences preserved, no individual exemption or actual operation. Locator: 5 101;5 4016c;5 271a; agency engine guidance selected sections..</p></dd><dt>Rule size gate</dt><dd>Rule5 4016c classifies stationary reciprocating engines at300brake horsepower or greater, any fuel, except emergency use engines for purposes of5 501.<span class=\"layer-source\"><a href=\"https://dec.vermont.gov/sites/dec/files/aqc/laws-regs/documents/Vermont_Air_Pollution_Control_Regulations.pdf\">Vermont DEC</a>. Source: Publication date not stated. Checked: October 25, 2026.</span> <p class=\"layer-scope\">Selected state rule and agency context; guidance differences preserved, no individual exemption or actual operation. Locator: 5 101;5 4016c;5 271a; agency engine guidance selected sections..</p></dd><dt>Exact size boundary</dt><dd>Guidance introductory nonemergency greater300bhp wording differs rule300or greater. Exactly300falls within selected rule classification, subject to other applicable provisions.<span class=\"layer-source\"><a href=\"https://dec.vermont.gov/sites/dec/files/aqc/laws-regs/documents/Vermont_Air_Pollution_Control_Regulations.pdf\">Vermont DEC</a>. Source: Publication date not stated. Checked: October 25, 2026.</span> <span class=\"layer-source\"><a href=\"https://dec.vermont.gov/air-quality/permits/source-categories/stationary-reciprocating-internal-combustion-engines\">Vermont DEC</a>. Source: Publication date not stated. Checked: October 25, 2026.</span> <p class=\"layer-scope\">Selected state rule and agency context; guidance differences preserved, no individual exemption or actual operation. Locator: 5 101;5 4016c;5 271a; agency engine guidance selected sections..</p></dd><dt>Emergency routine gate</dt><dd>State5 101definition permits up to100hours per year routine testing and maintenance plus defined emergency purposes; not measured operation.<span class=\"layer-source\"><a href=\"https://dec.vermont.gov/sites/dec/files/aqc/laws-regs/documents/Vermont_Air_Pollution_Control_Regulations.pdf\">Vermont DEC</a>. Source: Publication date not stated. Checked: October 25, 2026.</span> <p class=\"layer-scope\">Selected state rule and agency context; guidance differences preserved, no individual exemption or actual operation. Locator: 5 101;5 4016c;5 271a; agency engine guidance selected sections..</p></dd><dt>Emergency supply</dt><dd>Usual power, heat or lighting temporarily unavailable for reasons beyond owner or operator reasonable control.<span class=\"layer-source\"><a href=\"https://dec.vermont.gov/sites/dec/files/aqc/laws-regs/documents/Vermont_Air_Pollution_Control_Regulations.pdf\">Vermont DEC</a>. Source: Publication date not stated. Checked: October 25, 2026.</span> <p class=\"layer-scope\">Selected state rule and agency context; guidance differences preserved, no individual exemption or actual operation. Locator: 5 101;5 4016c;5 271a; agency engine guidance selected sections..</p></dd><dt>Emergency iso</dt><dd>ISO determines power capacity deficiency and implements voltage reduction of5percent or more of normal operating voltage. Both conditions apply.<span class=\"layer-source\"><a href=\"https://dec.vermont.gov/sites/dec/files/aqc/laws-regs/documents/Vermont_Air_Pollution_Control_Regulations.pdf\">Vermont DEC</a>. Source: Publication date not stated. Checked: October 25, 2026.</span> <p class=\"layer-scope\">Selected state rule and agency context; guidance differences preserved, no individual exemption or actual operation. Locator: 5 101;5 4016c;5 271a; agency engine guidance selected sections..</p></dd><dt>Emergency pumping</dt><dd>Fire or flood makes water pumping necessary to minimize property damage.<span class=\"layer-source\"><a href=\"https://dec.vermont.gov/sites/dec/files/aqc/laws-regs/documents/Vermont_Air_Pollution_Control_Regulations.pdf\">Vermont DEC</a>. Source: Publication date not stated. Checked: October 25, 2026.</span> <p class=\"layer-scope\">Selected state rule and agency context; guidance differences preserved, no individual exemption or actual operation. Locator: 5 101;5 4016c;5 271a; agency engine guidance selected sections..</p></dd><dt>Guidance aggregate</dt><dd>Agency guidance says emergency exemption only when facility engine aggregate less2000bhp. Selected5 4016c emergency exclusion does not print this aggregate gate. Relationship remains unresolved, not silently generalized.<span class=\"layer-source\"><a href=\"https://dec.vermont.gov/sites/dec/files/aqc/laws-regs/documents/Vermont_Air_Pollution_Control_Regulations.pdf\">Vermont DEC</a>. Source: Publication date not stated. Checked: October 25, 2026.</span> <span class=\"layer-source\"><a href=\"https://dec.vermont.gov/air-quality/permits/source-categories/stationary-reciprocating-internal-combustion-engines\">Vermont DEC</a>. Source: Publication date not stated. Checked: October 25, 2026.</span> <p class=\"layer-scope\">Selected state rule and agency context; guidance differences preserved, no individual exemption or actual operation. Locator: 5 101;5 4016c;5 271a; agency engine guidance selected sections..</p></dd><dt>Other law boundary</dt><dd>Selected classification exclusion concerns5 501and is not proof of exemption from every state or federal duty. State emergency definition is not federal demand response authorization.<span class=\"layer-source\"><a href=\"https://dec.vermont.gov/sites/dec/files/aqc/laws-regs/documents/Vermont_Air_Pollution_Control_Regulations.pdf\">Vermont DEC</a>. Source: Publication date not stated. Checked: October 25, 2026.</span> <span class=\"layer-source\"><a href=\"https://dec.vermont.gov/air-quality/permits/source-categories/stationary-reciprocating-internal-combustion-engines\">Vermont DEC</a>. Source: Publication date not stated. Checked: October 25, 2026.</span> <p class=\"layer-scope\">Selected state rule and agency context; guidance differences preserved, no individual exemption or actual operation. Locator: 5 101;5 4016c;5 271a; agency engine guidance selected sections..</p></dd><dt>Installation notice</dt><dd>Guidance requires notice to AQCD before engine installation, including engine make, model, horsepower, generator rating if applicable, manufacturing year and emission certification.<span class=\"layer-source\"><a href=\"https://dec.vermont.gov/air-quality/permits/source-categories/stationary-reciprocating-internal-combustion-engines\">Vermont DEC</a>. Source: Publication date not stated. Checked: October 25, 2026.</span> <p class=\"layer-scope\">Selected state rule and agency context; guidance differences preserved, no individual exemption or actual operation. Locator: 5 101;5 4016c;5 271a; agency engine guidance selected sections..</p></dd><dt>Engine nameplate</dt><dd>Guidance distinguishes engine nameplate from generator nameplate and requests engine nameplate photograph.<span class=\"layer-source\"><a href=\"https://dec.vermont.gov/air-quality/permits/source-categories/stationary-reciprocating-internal-combustion-engines\">Vermont DEC</a>. Source: Publication date not stated. Checked: October 25, 2026.</span> <p class=\"layer-scope\">Selected state rule and agency context; guidance differences preserved, no individual exemption or actual operation. Locator: 5 101;5 4016c;5 271a; agency engine guidance selected sections..</p></dd><dt>Standard boundary</dt><dd>Selected5 271a applies Tier2state standards to engines450bhp or greater installed on or after July1 2007including emergency use. Individual certification or federal compliance not established.<span class=\"layer-source\"><a href=\"https://dec.vermont.gov/sites/dec/files/aqc/laws-regs/documents/Vermont_Air_Pollution_Control_Regulations.pdf\">Vermont DEC</a>. Source: Publication date not stated. Checked: October 25, 2026.</span> <p class=\"layer-scope\">Selected state rule and agency context; guidance differences preserved, no individual exemption or actual operation. Locator: 5 101;5 4016c;5 271a; agency engine guidance selected sections..</p></dd><dt>Scope boundary</dt><dd>No full regulatory inventory, specific project eligibility, federal emergency definition or actual installed fleet reviewed.<span class=\"layer-source\"><a href=\"https://dec.vermont.gov/sites/dec/files/aqc/laws-regs/documents/Vermont_Air_Pollution_Control_Regulations.pdf\">Vermont DEC</a>. Source: Publication date not stated. Checked: October 25, 2026.</span> <p class=\"layer-scope\">Selected state rule and agency context; guidance differences preserved, no individual exemption or actual operation. Locator: 5 101;5 4016c;5 271a; agency engine guidance selected sections..</p></dd><dt>Individual eligibility</dt><dd><span class=\"layer-empty\">Not established</span><span class=\"layer-source\"><a href=\"https://dec.vermont.gov/sites/dec/files/aqc/laws-regs/documents/Vermont_Air_Pollution_Control_Regulations.pdf\">Vermont DEC</a>. Source: Publication date not stated. Checked: October 25, 2026.</span> <p class=\"layer-scope\">Selected state rule and agency context; guidance differences preserved, no individual exemption or actual operation. Locator: 5 101;5 4016c;5 271a; agency engine guidance selected sections..</p></dd><dt>Actual installed equipment</dt><dd><span class=\"layer-empty\">Not established</span><span class=\"layer-source\"><a href=\"https://dec.vermont.gov/sites/dec/files/aqc/laws-regs/documents/Vermont_Air_Pollution_Control_Regulations.pdf\">Vermont DEC</a>. Source: Publication date not stated. Checked: October 25, 2026.</span> <p class=\"layer-scope\">Selected state rule and agency context; guidance differences preserved, no individual exemption or actual operation. Locator: 5 101;5 4016c;5 271a; agency engine guidance selected sections..</p></dd><dt>Actual operation hours</dt><dd><span class=\"layer-empty\">Not established</span><span class=\"layer-source\"><a href=\"https://dec.vermont.gov/sites/dec/files/aqc/laws-regs/documents/Vermont_Air_Pollution_Control_Regulations.pdf\">Vermont DEC</a>. Source: Publication date not stated. Checked: October 25, 2026.</span> <p class=\"layer-scope\">Selected state rule and agency context; guidance differences preserved, no individual exemption or actual operation. Locator: 5 101;5 4016c;5 271a; agency engine guidance selected sections..</p></dd><dt>Atlas record id</dt><dd><span class=\"layer-empty\">Not established</span><span class=\"layer-source\"><a href=\"https://dec.vermont.gov/sites/dec/files/aqc/laws-regs/documents/Vermont_Air_Pollution_Control_Regulations.pdf\">Vermont DEC</a>. Source: Publication date not stated. Checked: October 25, 2026.</span> <p class=\"layer-scope\">Selected state rule and agency context; guidance differences preserved, no individual exemption or actual operation. Locator: 5 101;5 4016c;5 271a; agency engine guidance selected sections..</p></dd></dl></article>"},{"id":"air-egrid-state-2023-vt","html":"<article><h3>Vermont historical2023 electricity-generation emissions</h3><p class=\"layer-scope\">EPA eGRID2023 revision2 state electricity-generation emissions context,ST23 worksheet. Historical2023,not current2026 conditions or data center facility emissions. Annual NOx,SO2 andCO2 totals in source tons are distinct from source-reported total output rates in lb/MWh;CO2 is not CO2 equivalent. Annual net generation is MWh,not installed capacity or customer use. Rates are not marginal emissions,ambient concentrations,health effects or emissions factors allocated to a data center. No tons-to-tonnes conversion,rate recomputation,facility join or causal data center inference. State generation context does not establish the mix delivered to consumers. Puerto Rico source row is outside this51state/DC review,not absence.</p><dl class=\"layer-fields\"><dt>Status</dt><dd>historical<span class=\"layer-source\"><a href=\"https://www.epa.gov/system/files/documents/2025-06/egrid2023_data_rev2.xlsx\">U.S. Environmental Protection Agency</a>. Source: Publication date not stated. Checked: October 27, 2026.</span> <p class=\"layer-scope\">EPA eGRID2023 revision2 state electricity-generation emissions context,ST23 worksheet. Historical2023,not current2026 conditions or data center facility emissions. Annual NOx,SO2 andCO2 totals in source tons are distinct from source-reported total output rates in lb/MWh;CO2 is not CO2 equivalent. Annual net generation is MWh,not installed capacity or customer use. Rates are not marginal emissions,ambient concentrations,health effects or emissions factors allocated to a data center. No tons-to-tonnes conversion,rate recomputation,facility join or causal data center inference. State generation context does not establish the mix delivered to consumers. Puerto Rico source row is outside this51state/DC review,not absence. Locator: ST23 Data Year column.</p></dd><dt>Egrid report year</dt><dd>2023<span class=\"layer-source\"><a href=\"https://www.epa.gov/system/files/documents/2025-06/egrid2023_data_rev2.xlsx\">U.S. Environmental Protection Agency</a>. Source: Publication date not stated. Checked: October 27, 2026.</span> <p class=\"layer-scope\">EPA eGRID2023 revision2 state electricity-generation emissions context,ST23 worksheet. Historical2023,not current2026 conditions or data center facility emissions. Annual NOx,SO2 andCO2 totals in source tons are distinct from source-reported total output rates in lb/MWh;CO2 is not CO2 equivalent. Annual net generation is MWh,not installed capacity or customer use. Rates are not marginal emissions,ambient concentrations,health effects or emissions factors allocated to a data center. No tons-to-tonnes conversion,rate recomputation,facility join or causal data center inference. State generation context does not establish the mix delivered to consumers. Puerto Rico source row is outside this51state/DC review,not absence. Locator: ST23 YEAR column.</p></dd><dt>Egrid state fips</dt><dd>50<span class=\"layer-source\"><a href=\"https://www.epa.gov/system/files/documents/2025-06/egrid2023_data_rev2.xlsx\">U.S. Environmental Protection Agency</a>. Source: Publication date not stated. Checked: October 27, 2026.</span> <p class=\"layer-scope\">EPA eGRID2023 revision2 state electricity-generation emissions context,ST23 worksheet. Historical2023,not current2026 conditions or data center facility emissions. Annual NOx,SO2 andCO2 totals in source tons are distinct from source-reported total output rates in lb/MWh;CO2 is not CO2 equivalent. Annual net generation is MWh,not installed capacity or customer use. Rates are not marginal emissions,ambient concentrations,health effects or emissions factors allocated to a data center. No tons-to-tonnes conversion,rate recomputation,facility join or causal data center inference. State generation context does not establish the mix delivered to consumers. Puerto Rico source row is outside this51state/DC review,not absence. Locator: ST23 FIPSST column.</p></dd><dt>Egrid state basis</dt><dd>EPA eGRID2023 revision2 state electricity-generation emissions context,ST23 worksheet. Historical2023,not current2026 conditions or data center facility emissions. Annual NOx,SO2 andCO2 totals in source tons are distinct from source-reported total output rates in lb/MWh;CO2 is not CO2 equivalent. Annual net generation is MWh,not installed capacity or customer use. Rates are not marginal emissions,ambient concentrations,health effects or emissions factors allocated to a data center. No tons-to-tonnes conversion,rate recomputation,facility join or causal data center inference. State generation context does not establish the mix delivered to consumers. Puerto Rico source row is outside this51state/DC review,not absence.<span class=\"layer-source\"><a href=\"https://www.epa.gov/system/files/documents/2025-06/egrid2023_data_rev2.xlsx\">U.S. Environmental Protection Agency</a>. Source: Publication date not stated. Checked: October 27, 2026.</span> <p class=\"layer-scope\">EPA eGRID2023 revision2 state electricity-generation emissions context,ST23 worksheet. Historical2023,not current2026 conditions or data center facility emissions. Annual NOx,SO2 andCO2 totals in source tons are distinct from source-reported total output rates in lb/MWh;CO2 is not CO2 equivalent. Annual net generation is MWh,not installed capacity or customer use. Rates are not marginal emissions,ambient concentrations,health effects or emissions factors allocated to a data center. No tons-to-tonnes conversion,rate recomputation,facility join or causal data center inference. State generation context does not establish the mix delivered to consumers. Puerto Rico source row is outside this51state/DC review,not absence. Locator: ST23 labels,codes,units and review scope.</p></dd><dt>Egrid annual net generation</dt><dd>2480198.75 MWh<span class=\"layer-source\"><a href=\"https://www.epa.gov/system/files/documents/2025-06/egrid2023_data_rev2.xlsx\">U.S. Environmental Protection Agency</a>. Source: Publication date not stated. Checked: October 27, 2026.</span> <p class=\"layer-scope\">EPA eGRID2023 revision2 state electricity-generation emissions context,ST23 worksheet. Historical2023,not current2026 conditions or data center facility emissions. Annual NOx,SO2 andCO2 totals in source tons are distinct from source-reported total output rates in lb/MWh;CO2 is not CO2 equivalent. Annual net generation is MWh,not installed capacity or customer use. Rates are not marginal emissions,ambient concentrations,health effects or emissions factors allocated to a data center. No tons-to-tonnes conversion,rate recomputation,facility join or causal data center inference. State generation context does not establish the mix delivered to consumers. Puerto Rico source row is outside this51state/DC review,not absence. Locator: ST23 VT row 50, STNGENAN (State annual net generation (MWh)).</p></dd><dt>Egrid annual nox emissions</dt><dd>208.50 tons<span class=\"layer-source\"><a href=\"https://www.epa.gov/system/files/documents/2025-06/egrid2023_data_rev2.xlsx\">U.S. Environmental Protection Agency</a>. Source: Publication date not stated. Checked: October 27, 2026.</span> <p class=\"layer-scope\">EPA eGRID2023 revision2 state electricity-generation emissions context,ST23 worksheet. Historical2023,not current2026 conditions or data center facility emissions. Annual NOx,SO2 andCO2 totals in source tons are distinct from source-reported total output rates in lb/MWh;CO2 is not CO2 equivalent. Annual net generation is MWh,not installed capacity or customer use. Rates are not marginal emissions,ambient concentrations,health effects or emissions factors allocated to a data center. No tons-to-tonnes conversion,rate recomputation,facility join or causal data center inference. State generation context does not establish the mix delivered to consumers. Puerto Rico source row is outside this51state/DC review,not absence. Locator: ST23 VT row 50, STNOXAN (State annual NOx emissions (tons)).</p></dd><dt>Egrid annual so2 emissions</dt><dd>48.20 tons<span class=\"layer-source\"><a href=\"https://www.epa.gov/system/files/documents/2025-06/egrid2023_data_rev2.xlsx\">U.S. Environmental Protection Agency</a>. Source: Publication date not stated. Checked: October 27, 2026.</span> <p class=\"layer-scope\">EPA eGRID2023 revision2 state electricity-generation emissions context,ST23 worksheet. Historical2023,not current2026 conditions or data center facility emissions. Annual NOx,SO2 andCO2 totals in source tons are distinct from source-reported total output rates in lb/MWh;CO2 is not CO2 equivalent. Annual net generation is MWh,not installed capacity or customer use. Rates are not marginal emissions,ambient concentrations,health effects or emissions factors allocated to a data center. No tons-to-tonnes conversion,rate recomputation,facility join or causal data center inference. State generation context does not establish the mix delivered to consumers. Puerto Rico source row is outside this51state/DC review,not absence. Locator: ST23 VT row 50, STSO2AN (State annual SO2 emissions (tons)).</p></dd><dt>Egrid annual co2 emissions</dt><dd>53300.22 tons<span class=\"layer-source\"><a href=\"https://www.epa.gov/system/files/documents/2025-06/egrid2023_data_rev2.xlsx\">U.S. Environmental Protection Agency</a>. Source: Publication date not stated. Checked: October 27, 2026.</span> <p class=\"layer-scope\">EPA eGRID2023 revision2 state electricity-generation emissions context,ST23 worksheet. Historical2023,not current2026 conditions or data center facility emissions. Annual NOx,SO2 andCO2 totals in source tons are distinct from source-reported total output rates in lb/MWh;CO2 is not CO2 equivalent. Annual net generation is MWh,not installed capacity or customer use. Rates are not marginal emissions,ambient concentrations,health effects or emissions factors allocated to a data center. No tons-to-tonnes conversion,rate recomputation,facility join or causal data center inference. State generation context does not establish the mix delivered to consumers. Puerto Rico source row is outside this51state/DC review,not absence. Locator: ST23 VT row 50, STCO2AN (State annual CO2 emissions (tons)).</p></dd><dt>Egrid nox total output rate</dt><dd>0.17 lb per MWh<span class=\"layer-source\"><a href=\"https://www.epa.gov/system/files/documents/2025-06/egrid2023_data_rev2.xlsx\">U.S. Environmental Protection Agency</a>. Source: Publication date not stated. Checked: October 27, 2026.</span> <p class=\"layer-scope\">EPA eGRID2023 revision2 state electricity-generation emissions context,ST23 worksheet. Historical2023,not current2026 conditions or data center facility emissions. Annual NOx,SO2 andCO2 totals in source tons are distinct from source-reported total output rates in lb/MWh;CO2 is not CO2 equivalent. Annual net generation is MWh,not installed capacity or customer use. Rates are not marginal emissions,ambient concentrations,health effects or emissions factors allocated to a data center. No tons-to-tonnes conversion,rate recomputation,facility join or causal data center inference. State generation context does not establish the mix delivered to consumers. Puerto Rico source row is outside this51state/DC review,not absence. Locator: ST23 VT row 50, STNOXRTA (State annual NOx total output emission rate (lb/MWh)).</p></dd><dt>Egrid so2 total output rate</dt><dd>0.04 lb per MWh<span class=\"layer-source\"><a href=\"https://www.epa.gov/system/files/documents/2025-06/egrid2023_data_rev2.xlsx\">U.S. Environmental Protection Agency</a>. Source: Publication date not stated. Checked: October 27, 2026.</span> <p class=\"layer-scope\">EPA eGRID2023 revision2 state electricity-generation emissions context,ST23 worksheet. Historical2023,not current2026 conditions or data center facility emissions. Annual NOx,SO2 andCO2 totals in source tons are distinct from source-reported total output rates in lb/MWh;CO2 is not CO2 equivalent. Annual net generation is MWh,not installed capacity or customer use. Rates are not marginal emissions,ambient concentrations,health effects or emissions factors allocated to a data center. No tons-to-tonnes conversion,rate recomputation,facility join or causal data center inference. State generation context does not establish the mix delivered to consumers. Puerto Rico source row is outside this51state/DC review,not absence. Locator: ST23 VT row 50, STSO2RTA (State annual SO2 total output emission rate (lb/MWh)).</p></dd><dt>Egrid co2 total output rate</dt><dd>42.98 lb per MWh<span class=\"layer-source\"><a href=\"https://www.epa.gov/system/files/documents/2025-06/egrid2023_data_rev2.xlsx\">U.S. Environmental Protection Agency</a>. Source: Publication date not stated. Checked: October 27, 2026.</span> <p class=\"layer-scope\">EPA eGRID2023 revision2 state electricity-generation emissions context,ST23 worksheet. Historical2023,not current2026 conditions or data center facility emissions. Annual NOx,SO2 andCO2 totals in source tons are distinct from source-reported total output rates in lb/MWh;CO2 is not CO2 equivalent. Annual net generation is MWh,not installed capacity or customer use. Rates are not marginal emissions,ambient concentrations,health effects or emissions factors allocated to a data center. No tons-to-tonnes conversion,rate recomputation,facility join or causal data center inference. State generation context does not establish the mix delivered to consumers. Puerto Rico source row is outside this51state/DC review,not absence. Locator: ST23 VT row 50, STCO2RTA (State annual CO2 total output emission rate (lb/MWh)).</p></dd><dt>Egrid annual ch4 emissions lb</dt><dd>365680.77 lbs<span class=\"layer-source\"><a href=\"https://www.epa.gov/system/files/documents/2025-06/egrid2023_data_rev2.xlsx\">U.S. Environmental Protection Agency</a>. Source: Publication date not stated. Checked: October 27, 2026.</span> <p class=\"layer-scope\">Historical2023 EPA eGRID ST23 source-reported CH4,N2O,CO2 equivalent and ozone-season NOx context. Annual CH4/N2O totals are source lbs;CO2 equivalent total is source tons;total output rates are lb/MWh. CO2 equivalent differs from raw CO2; no global-warming-potential factor assumed or recomputed,no pounds/tons/metric-tonne conversion. Source-defined ozone-season NOx is not full-year NOx or an ambient ozone concentration. Annual and seasonal rates and totals remain separate,not summed across scopes. No marginal,facility,health-risk or attributable data center emissions inference. Locator: ST23 VT row 50, STCH4AN (State annual CH4 emissions (lbs)).</p></dd><dt>Egrid annual co2e emissions</dt><dd>64782.00 tons<span class=\"layer-source\"><a href=\"https://www.epa.gov/system/files/documents/2025-06/egrid2023_data_rev2.xlsx\">U.S. Environmental Protection Agency</a>. Source: Publication date not stated. Checked: October 27, 2026.</span> <p class=\"layer-scope\">Historical2023 EPA eGRID ST23 source-reported CH4,N2O,CO2 equivalent and ozone-season NOx context. Annual CH4/N2O totals are source lbs;CO2 equivalent total is source tons;total output rates are lb/MWh. CO2 equivalent differs from raw CO2; no global-warming-potential factor assumed or recomputed,no pounds/tons/metric-tonne conversion. Source-defined ozone-season NOx is not full-year NOx or an ambient ozone concentration. Annual and seasonal rates and totals remain separate,not summed across scopes. No marginal,facility,health-risk or attributable data center emissions inference. Locator: ST23 VT row 50, STCO2EQA (State annual CO2 equivalent emissions (tons)).</p></dd><dt>Egrid annual n2o emissions lb</dt><dd>48016.96 lbs<span class=\"layer-source\"><a href=\"https://www.epa.gov/system/files/documents/2025-06/egrid2023_data_rev2.xlsx\">U.S. Environmental Protection Agency</a>. Source: Publication date not stated. Checked: October 27, 2026.</span> <p class=\"layer-scope\">Historical2023 EPA eGRID ST23 source-reported CH4,N2O,CO2 equivalent and ozone-season NOx context. Annual CH4/N2O totals are source lbs;CO2 equivalent total is source tons;total output rates are lb/MWh. CO2 equivalent differs from raw CO2; no global-warming-potential factor assumed or recomputed,no pounds/tons/metric-tonne conversion. Source-defined ozone-season NOx is not full-year NOx or an ambient ozone concentration. Annual and seasonal rates and totals remain separate,not summed across scopes. No marginal,facility,health-risk or attributable data center emissions inference. Locator: ST23 VT row 50, STN2OAN (State annual N2O emissions (lbs)).</p></dd><dt>Egrid ozone season nox total output rate</dt><dd>0.17 lb per MWh<span class=\"layer-source\"><a href=\"https://www.epa.gov/system/files/documents/2025-06/egrid2023_data_rev2.xlsx\">U.S. Environmental Protection Agency</a>. Source: Publication date not stated. Checked: October 27, 2026.</span> <p class=\"layer-scope\">Historical2023 EPA eGRID ST23 source-reported CH4,N2O,CO2 equivalent and ozone-season NOx context. Annual CH4/N2O totals are source lbs;CO2 equivalent total is source tons;total output rates are lb/MWh. CO2 equivalent differs from raw CO2; no global-warming-potential factor assumed or recomputed,no pounds/tons/metric-tonne conversion. Source-defined ozone-season NOx is not full-year NOx or an ambient ozone concentration. Annual and seasonal rates and totals remain separate,not summed across scopes. No marginal,facility,health-risk or attributable data center emissions inference. Locator: ST23 VT row 50, STNOXRTO (State ozone season NOx total output emission rate (lb/MWh)).</p></dd><dt>Egrid extended basis</dt><dd>Historical2023 EPA eGRID ST23 source-reported CH4,N2O,CO2 equivalent and ozone-season NOx context. Annual CH4/N2O totals are source lbs;CO2 equivalent total is source tons;total output rates are lb/MWh. CO2 equivalent differs from raw CO2; no global-warming-potential factor assumed or recomputed,no pounds/tons/metric-tonne conversion. Source-defined ozone-season NOx is not full-year NOx or an ambient ozone concentration. Annual and seasonal rates and totals remain separate,not summed across scopes. No marginal,facility,health-risk or attributable data center emissions inference.<span class=\"layer-source\"><a href=\"https://www.epa.gov/system/files/documents/2025-06/egrid2023_data_rev2.xlsx\">U.S. Environmental Protection Agency</a>. Source: Publication date not stated. Checked: October 27, 2026.</span> <p class=\"layer-scope\">Historical2023 EPA eGRID ST23 source-reported CH4,N2O,CO2 equivalent and ozone-season NOx context. Annual CH4/N2O totals are source lbs;CO2 equivalent total is source tons;total output rates are lb/MWh. CO2 equivalent differs from raw CO2; no global-warming-potential factor assumed or recomputed,no pounds/tons/metric-tonne conversion. Source-defined ozone-season NOx is not full-year NOx or an ambient ozone concentration. Annual and seasonal rates and totals remain separate,not summed across scopes. No marginal,facility,health-risk or attributable data center emissions inference. Locator: ST23 field labels,report year and annual-versus-ozone-season units.</p></dd><dt>Egrid ozone season nox emissions</dt><dd>82.23 tons<span class=\"layer-source\"><a href=\"https://www.epa.gov/system/files/documents/2025-06/egrid2023_data_rev2.xlsx\">U.S. Environmental Protection Agency</a>. Source: Publication date not stated. Checked: October 27, 2026.</span> <p class=\"layer-scope\">Historical2023 EPA eGRID ST23 source-reported CH4,N2O,CO2 equivalent and ozone-season NOx context. Annual CH4/N2O totals are source lbs;CO2 equivalent total is source tons;total output rates are lb/MWh. CO2 equivalent differs from raw CO2; no global-warming-potential factor assumed or recomputed,no pounds/tons/metric-tonne conversion. Source-defined ozone-season NOx is not full-year NOx or an ambient ozone concentration. Annual and seasonal rates and totals remain separate,not summed across scopes. No marginal,facility,health-risk or attributable data center emissions inference. Locator: ST23 VT row 50, STNOXOZ (State ozone season NOx emissions (tons)).</p></dd><dt>Egrid co2e total output rate</dt><dd>52.24 lb per MWh<span class=\"layer-source\"><a href=\"https://www.epa.gov/system/files/documents/2025-06/egrid2023_data_rev2.xlsx\">U.S. Environmental Protection Agency</a>. Source: Publication date not stated. Checked: October 27, 2026.</span> <p class=\"layer-scope\">Historical2023 EPA eGRID ST23 source-reported CH4,N2O,CO2 equivalent and ozone-season NOx context. Annual CH4/N2O totals are source lbs;CO2 equivalent total is source tons;total output rates are lb/MWh. CO2 equivalent differs from raw CO2; no global-warming-potential factor assumed or recomputed,no pounds/tons/metric-tonne conversion. Source-defined ozone-season NOx is not full-year NOx or an ambient ozone concentration. Annual and seasonal rates and totals remain separate,not summed across scopes. No marginal,facility,health-risk or attributable data center emissions inference. Locator: ST23 VT row 50, STC2ERTA (State annual CO2 equivalent total output emission rate (lb/MWh)).</p></dd><dt>Egrid ch4 total output rate</dt><dd>0.15 lb per MWh<span class=\"layer-source\"><a href=\"https://www.epa.gov/system/files/documents/2025-06/egrid2023_data_rev2.xlsx\">U.S. Environmental Protection Agency</a>. Source: Publication date not stated. Checked: October 27, 2026.</span> <p class=\"layer-scope\">Historical2023 EPA eGRID ST23 source-reported CH4,N2O,CO2 equivalent and ozone-season NOx context. Annual CH4/N2O totals are source lbs;CO2 equivalent total is source tons;total output rates are lb/MWh. CO2 equivalent differs from raw CO2; no global-warming-potential factor assumed or recomputed,no pounds/tons/metric-tonne conversion. Source-defined ozone-season NOx is not full-year NOx or an ambient ozone concentration. Annual and seasonal rates and totals remain separate,not summed across scopes. No marginal,facility,health-risk or attributable data center emissions inference. Locator: ST23 VT row 50, STCH4RTA (State annual CH4 total output emission rate (lb/MWh)).</p></dd><dt>Egrid n2o total output rate</dt><dd>0.02 lb per MWh<span class=\"layer-source\"><a href=\"https://www.epa.gov/system/files/documents/2025-06/egrid2023_data_rev2.xlsx\">U.S. Environmental Protection Agency</a>. Source: Publication date not stated. Checked: October 27, 2026.</span> <p class=\"layer-scope\">Historical2023 EPA eGRID ST23 source-reported CH4,N2O,CO2 equivalent and ozone-season NOx context. Annual CH4/N2O totals are source lbs;CO2 equivalent total is source tons;total output rates are lb/MWh. CO2 equivalent differs from raw CO2; no global-warming-potential factor assumed or recomputed,no pounds/tons/metric-tonne conversion. Source-defined ozone-season NOx is not full-year NOx or an ambient ozone concentration. Annual and seasonal rates and totals remain separate,not summed across scopes. No marginal,facility,health-risk or attributable data center emissions inference. Locator: ST23 VT row 50, STN2ORTA (State annual N2O total output emission rate (lb/MWh)).</p></dd></dl></article>"},{"id":"air-eia-state-emissions-2025-vt","html":"<article><h3>Vermont historical power and useful thermal emissions2025 and2024</h3><p class=\"layer-scope\">EIA Table9.5 historical state2025 and2024 emissions estimates from energy consumption at conventional power and combined-heat-and-power plants. Includes electricity generation AND production of useful thermal output,not electricity-only emissions. Source unit is thousand metric tons,not eGRID source tons,pounds,CO2equivalent or emission intensity. Source CO2,SO2 and NOx are distinct pollutants,not summed as one climate measure. Displayed zero values may represent small values rounded to zero;no absence or zero-emissions certification. Retain displayed HTML precision;source says Excel cells provide additional precision,not adopted here. No direct eGRID trend or data center allocation,marginal emissions,ambient concentration,health risk,permit compliance,current2026 activity or Native facility joins.</p><dl class=\"layer-fields\"><dt>Status</dt><dd>historical<span class=\"layer-source\"><a href=\"https://www.eia.gov/electricity/annual/table.php?t=epa_09_05.html\">U.S. Energy Information Administration</a>. Source: October 21, 2026. Checked: October 28, 2026.</span> <p class=\"layer-scope\">EIA Table9.5 historical state2025 and2024 emissions estimates from energy consumption at conventional power and combined-heat-and-power plants. Includes electricity generation AND production of useful thermal output,not electricity-only emissions. Source unit is thousand metric tons,not eGRID source tons,pounds,CO2equivalent or emission intensity. Source CO2,SO2 and NOx are distinct pollutants,not summed as one climate measure. Displayed zero values may represent small values rounded to zero;no absence or zero-emissions certification. Retain displayed HTML precision;source says Excel cells provide additional precision,not adopted here. No direct eGRID trend or data center allocation,marginal emissions,ambient concentration,health risk,permit compliance,current2026 activity or Native facility joins. Locator: Table9.5 years2025 and2024.</p></dd><dt>Eia emissions basis</dt><dd>EIA Table9.5 historical state2025 and2024 emissions estimates from energy consumption at conventional power and combined-heat-and-power plants. Includes electricity generation AND production of useful thermal output,not electricity-only emissions. Source unit is thousand metric tons,not eGRID source tons,pounds,CO2equivalent or emission intensity. Source CO2,SO2 and NOx are distinct pollutants,not summed as one climate measure. Displayed zero values may represent small values rounded to zero;no absence or zero-emissions certification. Retain displayed HTML precision;source says Excel cells provide additional precision,not adopted here. No direct eGRID trend or data center allocation,marginal emissions,ambient concentration,health risk,permit compliance,current2026 activity or Native facility joins.<span class=\"layer-source\"><a href=\"https://www.eia.gov/electricity/annual/table.php?t=epa_09_05.html\">U.S. Energy Information Administration</a>. Source: October 21, 2026. Checked: October 28, 2026.</span> <p class=\"layer-scope\">EIA Table9.5 historical state2025 and2024 emissions estimates from energy consumption at conventional power and combined-heat-and-power plants. Includes electricity generation AND production of useful thermal output,not electricity-only emissions. Source unit is thousand metric tons,not eGRID source tons,pounds,CO2equivalent or emission intensity. Source CO2,SO2 and NOx are distinct pollutants,not summed as one climate measure. Displayed zero values may represent small values rounded to zero;no absence or zero-emissions certification. Retain displayed HTML precision;source says Excel cells provide additional precision,not adopted here. No direct eGRID trend or data center allocation,marginal emissions,ambient concentration,health risk,permit compliance,current2026 activity or Native facility joins. Locator: Table9.5 header and methodological notes.</p></dd><dt>Eia emissions co2 2025</dt><dd>10.00 thousand metric tons<span class=\"layer-source\"><a href=\"https://www.eia.gov/electricity/annual/table.php?t=epa_09_05.html\">U.S. Energy Information Administration</a>. Source: October 21, 2026. Checked: October 28, 2026.</span> <p class=\"layer-scope\">EIA Table9.5 historical state2025 and2024 emissions estimates from energy consumption at conventional power and combined-heat-and-power plants. Includes electricity generation AND production of useful thermal output,not electricity-only emissions. Source unit is thousand metric tons,not eGRID source tons,pounds,CO2equivalent or emission intensity. Source CO2,SO2 and NOx are distinct pollutants,not summed as one climate measure. Displayed zero values may represent small values rounded to zero;no absence or zero-emissions certification. Retain displayed HTML precision;source says Excel cells provide additional precision,not adopted here. No direct eGRID trend or data center allocation,marginal emissions,ambient concentration,health risk,permit compliance,current2026 activity or Native facility joins. Locator: Table9.5 Vermont row;co2;Year 2025.</p></dd><dt>Eia emissions co2 2024</dt><dd>8.00 thousand metric tons<span class=\"layer-source\"><a href=\"https://www.eia.gov/electricity/annual/table.php?t=epa_09_05.html\">U.S. Energy Information Administration</a>. Source: October 21, 2026. Checked: October 28, 2026.</span> <p class=\"layer-scope\">EIA Table9.5 historical state2025 and2024 emissions estimates from energy consumption at conventional power and combined-heat-and-power plants. Includes electricity generation AND production of useful thermal output,not electricity-only emissions. Source unit is thousand metric tons,not eGRID source tons,pounds,CO2equivalent or emission intensity. Source CO2,SO2 and NOx are distinct pollutants,not summed as one climate measure. Displayed zero values may represent small values rounded to zero;no absence or zero-emissions certification. Retain displayed HTML precision;source says Excel cells provide additional precision,not adopted here. No direct eGRID trend or data center allocation,marginal emissions,ambient concentration,health risk,permit compliance,current2026 activity or Native facility joins. Locator: Table9.5 Vermont row;co2;Year 2024.</p></dd><dt>Eia emissions so2 2025</dt><dd>0.04 thousand metric tons<span class=\"layer-source\"><a href=\"https://www.eia.gov/electricity/annual/table.php?t=epa_09_05.html\">U.S. Energy Information Administration</a>. Source: October 21, 2026. Checked: October 28, 2026.</span> <p class=\"layer-scope\">EIA Table9.5 historical state2025 and2024 emissions estimates from energy consumption at conventional power and combined-heat-and-power plants. Includes electricity generation AND production of useful thermal output,not electricity-only emissions. Source unit is thousand metric tons,not eGRID source tons,pounds,CO2equivalent or emission intensity. Source CO2,SO2 and NOx are distinct pollutants,not summed as one climate measure. Displayed zero values may represent small values rounded to zero;no absence or zero-emissions certification. Retain displayed HTML precision;source says Excel cells provide additional precision,not adopted here. No direct eGRID trend or data center allocation,marginal emissions,ambient concentration,health risk,permit compliance,current2026 activity or Native facility joins. Locator: Table9.5 Vermont row;so2;Year 2025.</p></dd><dt>Eia emissions so2 2024</dt><dd>0.05 thousand metric tons<span class=\"layer-source\"><a href=\"https://www.eia.gov/electricity/annual/table.php?t=epa_09_05.html\">U.S. Energy Information Administration</a>. Source: October 21, 2026. Checked: October 28, 2026.</span> <p class=\"layer-scope\">EIA Table9.5 historical state2025 and2024 emissions estimates from energy consumption at conventional power and combined-heat-and-power plants. Includes electricity generation AND production of useful thermal output,not electricity-only emissions. Source unit is thousand metric tons,not eGRID source tons,pounds,CO2equivalent or emission intensity. Source CO2,SO2 and NOx are distinct pollutants,not summed as one climate measure. Displayed zero values may represent small values rounded to zero;no absence or zero-emissions certification. Retain displayed HTML precision;source says Excel cells provide additional precision,not adopted here. No direct eGRID trend or data center allocation,marginal emissions,ambient concentration,health risk,permit compliance,current2026 activity or Native facility joins. Locator: Table9.5 Vermont row;so2;Year 2024.</p></dd><dt>Eia emissions nox 2025</dt><dd>1.00 thousand metric tons<span class=\"layer-source\"><a href=\"https://www.eia.gov/electricity/annual/table.php?t=epa_09_05.html\">U.S. Energy Information Administration</a>. Source: October 21, 2026. Checked: October 28, 2026.</span> <p class=\"layer-scope\">EIA Table9.5 historical state2025 and2024 emissions estimates from energy consumption at conventional power and combined-heat-and-power plants. Includes electricity generation AND production of useful thermal output,not electricity-only emissions. Source unit is thousand metric tons,not eGRID source tons,pounds,CO2equivalent or emission intensity. Source CO2,SO2 and NOx are distinct pollutants,not summed as one climate measure. Displayed zero values may represent small values rounded to zero;no absence or zero-emissions certification. Retain displayed HTML precision;source says Excel cells provide additional precision,not adopted here. No direct eGRID trend or data center allocation,marginal emissions,ambient concentration,health risk,permit compliance,current2026 activity or Native facility joins. Locator: Table9.5 Vermont row;nox;Year 2025.</p></dd><dt>Eia emissions nox 2024</dt><dd>1.00 thousand metric tons<span class=\"layer-source\"><a href=\"https://www.eia.gov/electricity/annual/table.php?t=epa_09_05.html\">U.S. Energy Information Administration</a>. Source: October 21, 2026. Checked: October 28, 2026.</span> <p class=\"layer-scope\">EIA Table9.5 historical state2025 and2024 emissions estimates from energy consumption at conventional power and combined-heat-and-power plants. Includes electricity generation AND production of useful thermal output,not electricity-only emissions. Source unit is thousand metric tons,not eGRID source tons,pounds,CO2equivalent or emission intensity. Source CO2,SO2 and NOx are distinct pollutants,not summed as one climate measure. Displayed zero values may represent small values rounded to zero;no absence or zero-emissions certification. Retain displayed HTML precision;source says Excel cells provide additional precision,not adopted here. No direct eGRID trend or data center allocation,marginal emissions,ambient concentration,health risk,permit compliance,current2026 activity or Native facility joins. Locator: Table9.5 Vermont row;nox;Year 2024.</p></dd></dl></article>"}]}