Data CentersAtlas
Documented infrastructure

Backup generators and air permits.

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.

Checked: October 28, 2026.

Documented generator counts come from selected permit records. A permit is not installation or operation, and the reviewed items are not a complete equipment count.

Evidence by state.

51 state rows shown

National context.

  • Federal minor source public participation proposal

    The current EPA index labels this as proposed. Existing state procedures are not presumed removed. No health or harm finding inferred.

    U.S. Environmental Protection Agency. Source: Publication date not stated. Checked: October 23, 2026.

    Full source details load when opened.

Latest source reviews.

  • Alaska historical power and useful thermal emissions2025 and2024

    Historical record. 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.

    U.S. Energy Information Administration. Source: October 21, 2026. Checked: October 28, 2026.

  • Alabama historical power and useful thermal emissions2025 and2024

    Historical record. 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.

    U.S. Energy Information Administration. Source: October 21, 2026. Checked: October 28, 2026.

  • Arkansas historical power and useful thermal emissions2025 and2024

    Historical record. 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.

    U.S. Energy Information Administration. Source: October 21, 2026. Checked: October 28, 2026.

Only states with sourced items have layer pages. A missing review is not a finding that a tariff, permit, program or reporting rule is absent.

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Unknown fields are withheld. The Atlas compilation license remains awaiting the owner decision. Original source terms and credits remain separate.

Updated . What changed: Latest source review in this evidence collection. It does not establish a site outcome.