Braidwood Generation Station
Constellation Energy Generation, LLCWill County
Braidwood Generation Station is a 2,449.8 MW nuclear plant in Will County. Braidwood is a two-unit nuclear plant on a 4,457-acre site in Braceville, Illinois, owned and operated by Constellation Energy Generation. Its Westinghouse four-loop pressurized water reactors entered commercial operation in 1988 and can produce up to 2,386 MW. NRC renewal in 2016 extended the licenses to 2046 and 2047. Flagged by Exelon as at risk of early closure, Braidwood won Illinois carbon mitigation credits running to May 2027. Constellation is replacing its main turbines to add output from 2026, with Byron, about 135 MW in all by 2029.
Mapped infrastructure geometry associated with this asset.
EIA plant 6022 · Inventory for Sep 2026.
| Generator | Technology | Status | Power (MW) | Energy (MWh) |
|---|---|---|---|---|
| 1 | Nuclear | Operating | 1,224.9 | Unknown |
| 2 | Nuclear | Operating | 1,224.9 | Unknown |
Similar plants ranked by technology, capacity, and distance.
Current generator records and technology attributes reported through EIA-860.
| Generator | Capacity | Technology | Operation | Status |
|---|---|---|---|---|
| 1 | 1,224.9 MW 1,183 MW summer | Nuclear ST | Jul 1988 | Operating |
| 2 | 1,224.9 MW 1,149.3 MW summer | Nuclear ST | Oct 1988 | Operating |
Monthly EIA generation history and recent market-resource behavior where linked telemetry is available.
Deterministic links to ERCOT market resources, price records, outage disclosures, queue records, and nearby infrastructure. Candidate joins remain labeled until corroborated.
Source-backed project transactions, agreements, land records, permits, and environmental disclosures. Portfolio and adjacent-project facts remain explicitly scoped.
Parties, market resources, and identifiers tied to this asset, with owner, operator, developer, EPC, compliance provider, and interconnecting entity roles kept separate.
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Project milestones and public references behind the asset profile.
July 1988 (Unit 1) and October 1988 (Unit 2).
Monthly generation is reported through EIA-923. Capacity factor uses the current EIA nameplate capacity and is shown only for complete calendar years.
| Largest reported plants | Capacity | State | |
|---|---|---|---|
| Peach Bottom | 2,876.4 MW | PA | |
| Braidwood Generation StationCurrent | 2,449.8 MW | IL | |
| Byron Generating Station | 2,449.8 MW | IL | |
| LaSalle Generating Station | 2,340 MW | IL | |
| Limerick | 2,277 MW | PA | |
| Quad Cities Generating Station | 2,018.6 MW | IL | |
| Dresden Generating Station | 2,018.6 MW | IL | |
| Nine Mile Point Nuclear Station | 1,901.1 MW | NY |
Portfolio membership follows the latest EIA-860 reporting entity. It does not imply ultimate ownership.
View full reporting portfolioEIA-860 lists generator 1 with this operating date.
EIA-860 lists generator 2 with this operating date.
Unit 1 to 2046, Unit 2 to 2047.
Announced with planned 2021 retirements of Byron and Dresden.
About 135 MW across Braidwood and Byron; increased output from 2026, full by 2029.
Answered from the published record above. Questions whose inputs this profile does not carry are omitted rather than estimated.
Braidwood Generation Station reports 2,449.8 MW nuclear of operating nameplate capacity. These technology ratings do not establish a common export limit. Source: EIA Sep 2026.
Braidwood Generation Station is a nuclear facility in Will County, IL, participating in the PJM market.
Braidwood Generation Station is in Will County, IL, inside the PJM balancing area.
Braidwood Generation Station is operated by Constellation Nuclear according to the EIA generator inventory. Reporting membership does not by itself establish ultimate ownership.
Braidwood Generation Station reported 19,615.9 GWh over the twelve months to 2026-07. Figures are net generation as filed to EIA-923.
By capacity, Braidwood Generation Station ranks #9 of 54 operating plants of the same technology nationally. It ranks #1 of 6 in IL.
Plants within 25 km, nearest first, regardless of technology. Proximity is straight-line distance between mapped plant coordinates; it does not by itself establish a shared point of interconnection.