Illinois infrastructure

Illinois data center generators and air permits.

5 sourced items are documented. Permit records do not establish installed equipment or actual operation.

Approval documented, Historical record, Proposal documented. Checked: October 28, 2026.

Evidence applies only to the subjects and dates in the linked sources. State context does not assign a tariff, permit or quantity to every facility.

Open the Illinois data center map.

Sourced findings.

Illinois Prime construction permit and startup dependent operating clock
Only pages1 and2 of issued construction permit reviewed. Remaining conditions, operating permit, startup records and exact Atlas association not reviewed.
Illinois Environmental Protection Agency. Source: July 15, 2025. Checked: October 25, 2026.
Full source details load when opened.
Aurora CyrusOne preliminary air permit and source inventory
Bounded preliminary draft review: physical pages1through4,16and17,40 text; physical40 equipment summary visually reviewed. Printed pages differ by one from physical PDF pages. No final issued permit, full condition set or exact Native campus association reviewed.
Illinois Environmental Protection Agency. Source: Publication date not stated. Checked: October 26, 2026.
Full source details load when opened.
Wood Dale dated proposed generator and modeling context
Dated agency modeling memo first page text and image reviewed; selected following methodology text read. Full model files, final issued permit, remaining results and exact Native site association not independently reviewed.
Illinois Environmental Protection Agency. Source: Publication date not stated. Checked: October 26, 2026.
Full source details load when opened.
Illinois historical2023 electricity-generation emissions
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.
U.S. Environmental Protection Agency. Source: Publication date not stated. Checked: October 27, 2026.
Full source details load when opened.
Illinois historical power and useful thermal emissions2025 and2024
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.
Full source details load when opened.

Explore county records.

Explore data center records.

These records are in Illinois. State evidence does not establish an individual record match.

Find the full record collection on the state map.

Download this state evidence and its sources.