# Braidwood Generation Station

PJM Nuclear · https://askthegrid.com/assets/facilities/braidwood-generation-station

Braidwood Generation Station is a nuclear power facility with 2,449.8 MW of EIA-reported nameplate capacity in Will County, Illinois, registered as EIA Plant ID 6022. Constellation Nuclear is the registered plant entity or operator. The plant's generating configuration is two Westinghouse four-loop pressurized-water nuclear reactors (PWRs), with Westinghouse turbine-generators and Babcock & Wilcox supplied Unit 1 steam generators and Westinghouse supplied Unit 2 steam generators.
COMED · 345 kV · Commonwealth Edison Company (ComEd).

## Key facts

- Technology: Nuclear
- Power capacity: 2449.8 MW
- Operating status: operating

## Grid and market context

- ISO/RTO: PJM
- Balancing authority: PJM Interconnection, LLC

## Source-backed facts

- Owner logo domain: constellationenergy.com — Braidwood Clean Energy Center | Constellation Energy Locations · confidence: medium
- Identifiers: [{"value":"6022","system":"EIA plant ID"},{"value":"1","system":"EIA generator ID"},{"value":"2","system":"EIA generator ID"},{"value":"BRAIDWOOD NUCLEAR 1","system":"PJM resource name"},{"value":"BRAIDWOOD NUCLEAR 2","system":"PJM resource name"},{"value":"120 (BRAIDWOOD NUCLEAR 1)","system":"PJM RPM existing-resource-list entry"},{"value":"121 (BRAIDWOOD NUCLEAR 2)","system":"PJM RPM existing-resource-list entry"},{"value":"V4-049 (Braidwood Nuclear Generating Station, Unit 2)","system":"PJM interconnection queue"},{"value":"COMED","system":"PJM market zone"},{"value":"STN 50-456","system":"NRC docket"},{"value":"STN 50-457","system":"NRC docket"},{"value":"NPF-72","system":"NRC facility operating license"},{"value":"NPF-77","system":"NRC facility operating license"}] — 2026 Generation · confidence: medium
- Identifiers: [{"value":"6022","system":"EIA plant ID"},{"value":"1","system":"EIA generator ID"},{"value":"2","system":"EIA generator ID"},{"value":"BRAIDWOOD NUCLEAR 1","system":"PJM resource name"},{"value":"BRAIDWOOD NUCLEAR 2","system":"PJM resource name"},{"value":"120 (BRAIDWOOD NUCLEAR 1)","system":"PJM RPM existing-resource-list entry"},{"value":"121 (BRAIDWOOD NUCLEAR 2)","system":"PJM RPM existing-resource-list entry"},{"value":"V4-049 (Braidwood Nuclear Generating Station, Unit 2)","system":"PJM interconnection queue"},{"value":"COMED","system":"PJM market zone"},{"value":"STN 50-456","system":"NRC docket"},{"value":"STN 50-457","system":"NRC docket"},{"value":"NPF-72","system":"NRC facility operating license"},{"value":"NPF-77","system":"NRC facility operating license"}] — Nuclear reactor Ownership · confidence: medium
- Identifiers: [{"value":"6022","system":"EIA plant ID"},{"value":"1","system":"EIA generator ID"},{"value":"2","system":"EIA generator ID"},{"value":"BRAIDWOOD NUCLEAR 1","system":"PJM resource name"},{"value":"BRAIDWOOD NUCLEAR 2","system":"PJM resource name"},{"value":"120 (BRAIDWOOD NUCLEAR 1)","system":"PJM RPM existing-resource-list entry"},{"value":"121 (BRAIDWOOD NUCLEAR 2)","system":"PJM RPM existing-resource-list entry"},{"value":"V4-049 (Braidwood Nuclear Generating Station, Unit 2)","system":"PJM interconnection queue"},{"value":"COMED","system":"PJM market zone"},{"value":"STN 50-456","system":"NRC docket"},{"value":"STN 50-457","system":"NRC docket"},{"value":"NPF-72","system":"NRC facility operating license"},{"value":"NPF-77","system":"NRC facility operating license"}] — Sheet1 · confidence: medium
- Identifiers: [{"value":"6022","system":"EIA plant ID"},{"value":"1","system":"EIA generator ID"},{"value":"2","system":"EIA generator ID"},{"value":"BRAIDWOOD NUCLEAR 1","system":"PJM resource name"},{"value":"BRAIDWOOD NUCLEAR 2","system":"PJM resource name"},{"value":"120 (BRAIDWOOD NUCLEAR 1)","system":"PJM RPM existing-resource-list entry"},{"value":"121 (BRAIDWOOD NUCLEAR 2)","system":"PJM RPM existing-resource-list entry"},{"value":"V4-049 (Braidwood Nuclear Generating Station, Unit 2)","system":"PJM interconnection queue"},{"value":"COMED","system":"PJM market zone"},{"value":"STN 50-456","system":"NRC docket"},{"value":"STN 50-457","system":"NRC docket"},{"value":"NPF-72","system":"NRC facility operating license"},{"value":"NPF-77","system":"NRC facility operating license"}] — Braidwood Station 1 and 2 / Byron Station 1 and 2 Approved Power Uprate Application Information | Nuclear Regulatory Commission · confidence: medium
- Description: Braidwood Generation Station is a two-unit nuclear facility in Braceville, Illinois, in Will County. NRC records identify both units as Westinghouse four-loop pressurized-water reactors. Unit 1 is licensed through 2046 and Unit 2 through 2047. — Braidwood Clean Energy Center | Constellation Energy Locations · confidence: high
- Description: Braidwood Generation Station is a two-unit nuclear facility in Braceville, Illinois, in Will County. NRC records identify both units as Westinghouse four-loop pressurized-water reactors. Unit 1 is licensed through 2046 and Unit 2 through 2047. — Braidwood Station, Units 1 and 2 - Environmental... · confidence: high
- Identifiers.0: {"value":"6022","system":"EIA plant ID"} — 2026 Generation · confidence: high
- Identifiers.1: {"value":"1","system":"EIA generator ID"} — Nuclear reactor Ownership · confidence: high
- Identifiers.2: {"value":"2","system":"EIA generator ID"} — Nuclear reactor Ownership · confidence: medium
- Identifiers.3: {"value":"BRAIDWOOD NUCLEAR 1","system":"PJM resource name"} — Sheet1 · confidence: medium
- Identifiers.4: {"value":"BRAIDWOOD NUCLEAR 2","system":"PJM resource name"} — Sheet1 · confidence: medium
- Identifiers.5: {"value":"120 (BRAIDWOOD NUCLEAR 1)","system":"PJM RPM existing-resource-list entry"} — Sheet1 · confidence: medium
- Identifiers.6: {"value":"121 (BRAIDWOOD NUCLEAR 2)","system":"PJM RPM existing-resource-list entry"} — Sheet1 · confidence: medium
- Identifiers.8: {"value":"COMED","system":"PJM market zone"} — Braidwood Station 1 and 2 / Byron Station 1 and 2 Approved Power Uprate Application Information | Nuclear Regulatory Commission · confidence: high
- Identifiers.9: {"value":"STN 50-456","system":"NRC docket"} — Braidwood Station 1 and 2 / Byron Station 1 and 2 Approved Power Uprate Application Information | Nuclear Regulatory Commission · confidence: high
- Identifiers.10: {"value":"STN 50-457","system":"NRC docket"} — Braidwood Station 1 and 2 / Byron Station 1 and 2 Approved Power Uprate Application Information | Nuclear Regulatory Commission · confidence: high
- Identifiers.11: {"value":"NPF-72","system":"NRC facility operating license"} — Braidwood Station 1 and 2 / Byron Station 1 and 2 Approved Power Uprate Application Information | Nuclear Regulatory Commission · confidence: high
- Identifiers.12: {"value":"NPF-77","system":"NRC facility operating license"} — Sheet1 · confidence: medium
- Parties.5: {"relationship":"Architect-engineer","name":"Sargent & Lundy","official_url":"https://www.sargentlundy.com/"} — Sargent & Lundy: Homepage · confidence: high
- Commercial operation date: 1988 — Braidwood Clean Energy Center - Nuclear Powers Illinois · confidence: medium
- Commercial operation date: 1988 — Braidwood 2 · confidence: medium
- Power mw: 2332 — Source · confidence: medium
- Unit count: 2 — Source · confidence: high
- Construction scope: Two-unit nuclear generating station comprising two Westinghouse four-loop pressurized-water reactors and two Westinghouse-furnished turbine-generators. Unit 1 has Babcock & Wilcox Model 7720 replacement steam generators; Unit 2 has four Westinghouse Model D5 steam generators. Sargent & Lundy served as architect-engineer, and the units use PWR dry ambient containment structures. — Braidwood Station, Units 1 And 2 – Review of the Unit 1 Updated Fall 2022 and the Unit 2 Spring 2023 Steam Generator Tube Inspection Reports (EPID: L-2024-LRO-0047) · confidence: medium
- Product url: https://westinghousenuclear.com/nuclear-fuel/pressurized-water-reactor-pwr/ — Pressurized Water Reactor (PWR) | Westinghouse Nuclear · confidence: medium
- Kind: nuclear — Braidwood Clean Energy Center · confidence: high
- Equipment models: [{"manufacturer_domain":"westinghousenuclear.com","product_url":"https://westinghousenuclear.com/nuclear-fuel/pressurized-water-reactor-pwr/","count":2,"unit_mw":null,"name":"Westinghouse four-loop pressurized-water reactor (PWR)"},{"manufacturer_domain":"westinghousenuclear.com","product_url":null,"count":2,"unit_mw":null,"name":"Westinghouse turbine-generator"},{"manufacturer_domain":"babcock.com","product_url":"https://www.babcock.com/home/products-services/steam-generators/steam-generators","count":null,"unit_mw":null,"name":"Babcock & Wilcox Model 7720 replacement steam generator"},{"manufacturer_domain":"westinghousenuclear.com","product_url":"https://westinghousenuclear.com/operating-plants/outage-services/steam-generator-services/","count":4,"unit_mw":null,"name":"Westinghouse Model D5 steam generator"}] — Braidwood Station, Units 1 And 2 – Review of the Unit 1 Updated Fall 2022 and the Unit 2 Spring 2023 Steam Generator Tube Inspection Reports (EPID: L-2024-LRO-0047) · confidence: medium
- Equipment models.2: {"manufacturer_domain":"babcock.com","product_url":"https://www.babcock.com/home/products-services/steam-generators/steam-generators","count":null,"unit_mw":null,"name":"Babcock & Wilcox Model 7720 replacement steam generator"} — Braidwood Station, Units 1 And 2 – Review of the Unit 1 Updated Fall 2022 and the Unit 2 Spring 2023 Steam Generator Tube Inspection Reports (EPID: L-2024-LRO-0047) · confidence: medium
- Equipment models.3: {"manufacturer_domain":"westinghousenuclear.com","product_url":"https://westinghousenuclear.com/operating-plants/outage-services/steam-generator-services/","count":4,"unit_mw":null,"name":"Westinghouse Model D5 steam generator"} — Braidwood Station, Units 1 And 2 – Review of the Unit 1 Updated Fall 2022 and the Unit 2 Spring 2023 Steam Generator Tube Inspection Reports (EPID: L-2024-LRO-0047) · confidence: medium
- Quality notes: ["The August 2000 event is documented as a regulated corporate and license transfer from Commonwealth Edison to Exelon Generation, rather than an arm’s-length sale; the cited NRC materials do not state purchase consideration.","The $800 million announced in February 2023 is a combined Braidwood-and-Byron capital investment; no site-specific Braidwood allocation or completion date is stated.","The NRC transfer order’s decommissioning-trust minimums are not acquisition consideration or project-financing proceeds.","Braidwood faced a potential premature-retirement risk in 2021, but the plant was committed to operate through May 2023 and its renewed licenses remain valid through 2046 and 2047."] — Constellation Making Major Investment in Two Illinois Nuclear Plants to Increase Clean Energy Output · confidence: medium
- Quality notes: ["The August 2000 event is documented as a regulated corporate and license transfer from Commonwealth Edison to Exelon Generation, rather than an arm’s-length sale; the cited NRC materials do not state purchase consideration.","The $800 million announced in February 2023 is a combined Braidwood-and-Byron capital investment; no site-specific Braidwood allocation or completion date is stated.","The NRC transfer order’s decommissioning-trust minimums are not acquisition consideration or project-financing proceeds.","Braidwood faced a potential premature-retirement risk in 2021, but the plant was committed to operate through May 2023 and its renewed licenses remain valid through 2046 and 2047."] — Braidwood Clean Energy Center | Constellation Energy Locations · confidence: medium
- Financing summary: No Braidwood-specific project-debt amount or sale consideration was disclosed. The February 2023 announcement was a combined $800 million capital investment by Constellation for equipment upgrades at Braidwood and Byron, not a project-financing or acquisition amount. As a condition of the August 2000 license transfer, Commonwealth Edison was required to transfer minimum decommissioning-trust amounts of $154,273,345 for Unit 1 and $154,448,967 for Unit 2 to Exelon Generation; these funds were not purchase consideration. — Federal Register :: In the Matter of Commonwealth Edison Company (Braidwood Station, Units 1 and 2); Order Approving Transfer of Licenses and Conforming Amendments · confidence: medium
- Financing summary: No Braidwood-specific project-debt amount or sale consideration was disclosed. The February 2023 announcement was a combined $800 million capital investment by Constellation for equipment upgrades at Braidwood and Byron, not a project-financing or acquisition amount. As a condition of the August 2000 license transfer, Commonwealth Edison was required to transfer minimum decommissioning-trust amounts of $154,273,345 for Unit 1 and $154,448,967 for Unit 2 to Exelon Generation; these funds were not purchase consideration. — Constellation Making Major Investment in Two Illinois Nuclear Plants to Increase Clean Energy Output · confidence: medium
- Financing summary: No Braidwood-specific project-debt amount or sale consideration was disclosed. The February 2023 announcement was a combined $800 million capital investment by Constellation for equipment upgrades at Braidwood and Byron, not a project-financing or acquisition amount. As a condition of the August 2000 license transfer, Commonwealth Edison was required to transfer minimum decommissioning-trust amounts of $154,273,345 for Unit 1 and $154,448,967 for Unit 2 to Exelon Generation; these funds were not purchase consideration. — Form 10-Q for Constellation Energy Corp filed 11/04/2024 · confidence: medium
- Commercial parties.1: {"relationship":"Current operator","name":"Constellation Nuclear","detail":"Operates the Braidwood facility for its owner, Constellation Energy Generation, LLC.","official_url":"https://www.constellationenergy.com/"} — Source · confidence: medium
- Commercial parties.7: {"relationship":"Architect-engineer","name":"Sargent & Lundy","detail":"Served as architect-engineer for both Braidwood units.","official_url":"https://www.sargentlundy.com/"} — Source · confidence: high
- Quality notes.1: The $800 million announced in February 2023 is a combined Braidwood-and-Byron capital investment; no site-specific Braidwood allocation or completion date is stated. — Constellation Making Major Investment in Two Illinois Nuclear Plants to Increase Clean Energy Output · confidence: high
- Quality notes.2: The NRC transfer order’s decommissioning-trust minimums are not acquisition consideration or project-financing proceeds. — Constellation Making Major Investment in Two Illinois Nuclear Plants to Increase Clean Energy Output · confidence: medium
- Quality notes.2: The NRC transfer order’s decommissioning-trust minimums are not acquisition consideration or project-financing proceeds. — Source · confidence: medium
- Quality notes.3: Braidwood faced a potential premature-retirement risk in 2021, but the plant was committed to operate through May 2023 and its renewed licenses remain valid through 2046 and 2047. — Braidwood Clean Energy Center | Constellation Energy Locations · confidence: medium
- Timeline.0: {"event":"Construction start","date":"1975-08-01","detail":"Construction of Braidwood Unit 1 is recorded as beginning on August 1, 1975; Unit 2 has the same recorded construction-start date."} — Braidwood 1 - World Nuclear Association · confidence: medium
- Timeline.0: {"event":"Construction start","date":"1975-08-01","detail":"Construction of Braidwood Unit 1 is recorded as beginning on August 1, 1975; Unit 2 has the same recorded construction-start date."} — Braidwood 2 - World Nuclear Association · confidence: medium
- Timeline.1: {"event":"Construction permit","date":"1975-12-31","detail":"The NRC issued Braidwood’s construction permit."} — Safety Evaluation Report, Related to the License Renewal of Byron Station, Units 1 and 2, and Braidwood Station, Units 1 and 2 – Docket Nos. 50-454, 50-455, 50-456, and 50-457 – Exelon Generation Company, LLC – Sections 1 to 3 (NUREG-2190, Volume 1) | Nuclear Regulatory Commission · confidence: high
- Timeline.2: {"event":"Operating licenses issued","date":"1987-07-02","detail":"The NRC issued the Unit 1 operating license."} — Safety Evaluation Report, Related to the License Renewal of Byron Station, Units 1 and 2, and Braidwood Station, Units 1 and 2 – Docket Nos. 50-454, 50-455, 50-456, and 50-457 – Exelon Generation Company, LLC – Sections 1 to 3 (NUREG-2190, Volume 1) | Nuclear Regulatory Commission · confidence: high
- Timeline.3: {"event":"Operating license issued","date":"1988-05-20","detail":"The NRC issued the Unit 2 operating license."} — Safety Evaluation Report, Related to the License Renewal of Byron Station, Units 1 and 2, and Braidwood Station, Units 1 and 2 – Docket Nos. 50-454, 50-455, 50-456, and 50-457 – Exelon Generation Company, LLC – Sections 1 to 3 (NUREG-2190, Volume 1) | Nuclear Regulatory Commission · confidence: high
- Timeline.4: {"event":"Commercial operation—Unit 1","date":"1988-07-29","detail":"Braidwood Unit 1 entered commercial operation."} — Braidwood 1 - World Nuclear Association · confidence: medium
- Timeline.5: {"event":"Commercial operation—Unit 2","date":"1988-10-17","detail":"Braidwood Unit 2 entered commercial operation."} — Braidwood 2 - World Nuclear Association · confidence: medium
- Timeline.8: {"event":"Power uprate amendments","date":"2001-05-04","detail":"The NRC issued amendments increasing reactor power at Braidwood Units 1 and 2."} — Braidwood Station 1 and 2 / Byron Station 1 and 2 Approved Power Uprate Application Information | Nuclear Regulatory Commission · confidence: high
- Timeline.10: {"event":"License renewal approved","date":"2016-01-27","detail":"The NRC approved renewal of the facility’s operating licenses. Unit 1 is licensed through 2046 and Unit 2 through 2047."} — Braidwood Clean Energy Center | Constellation Energy Locations · confidence: high
- Timeline.13: {"event":"Turbine upgrade announced","date":"2023-02-21","detail":"Constellation announced a combined $800 million investment in new equipment at Braidwood and Byron, including high-efficiency main-turbine replacements expected to add approximately 135 MW across the two plants."} — Constellation Making Major Investment in Two Illinois Nuclear Plants to Increase Clean Energy Output · confidence: high
- Interconnection voltage kv: 345 — Reliability Resource Initiative Additional Summaries · confidence: medium

## Timeline

- 1975-08-01 — Construction start
  Construction of Braidwood Unit 1 is recorded as beginning on August 1, 1975; Unit 2 has the same recorded construction-start date.
  Source: Braidwood 1 - World Nuclear Association (https://www.world-nuclear.org/nuclear-reactor-database/details/braidwood-1)
- 1975-12-31 — Construction permit
  The NRC issued Braidwood’s construction permit.
  Source: Safety Evaluation Report, Related to the License Renewal of Byron Station, Units 1 and 2, and Braidwood Station, Units 1 and 2 – Docket Nos. 50-454, 50-455, 50-456, and 50-457 – Exelon Generation Company, LLC – Sections 1 to 3 (NUREG-2190, Volume 1) | Nuclear Regulatory Commission (https://www.nrc.gov/reading-rm/doc-collections/nuregs/staff/sr2190/v1/index)
- 1987-07-02 — Operating licenses issued
  The NRC issued the Unit 1 operating license.
  Source: Safety Evaluation Report, Related to the License Renewal of Byron Station, Units 1 and 2, and Braidwood Station, Units 1 and 2 – Docket Nos. 50-454, 50-455, 50-456, and 50-457 – Exelon Generation Company, LLC – Sections 1 to 3 (NUREG-2190, Volume 1) | Nuclear Regulatory Commission (https://www.nrc.gov/reading-rm/doc-collections/nuregs/staff/sr2190/v1/index)
- 1988-05-20 — Operating license issued
  The NRC issued the Unit 2 operating license.
  Source: Safety Evaluation Report, Related to the License Renewal of Byron Station, Units 1 and 2, and Braidwood Station, Units 1 and 2 – Docket Nos. 50-454, 50-455, 50-456, and 50-457 – Exelon Generation Company, LLC – Sections 1 to 3 (NUREG-2190, Volume 1) | Nuclear Regulatory Commission (https://www.nrc.gov/reading-rm/doc-collections/nuregs/staff/sr2190/v1/index)
- 2001-05-04 — Power uprate amendments
  The NRC issued amendments increasing reactor power at Braidwood Units 1 and 2.
  Source: Braidwood Station 1 and 2 / Byron Station 1 and 2 Approved Power Uprate Application Information | Nuclear Regulatory Commission (https://www.nrc.gov/reactors/operating/licensing/power-uprates/pwr-stretch/braidwood1-2-byron-pu)
- 2016-01-27 — License renewal approved
  The NRC approved renewal of the facility’s operating licenses. Unit 1 is licensed through 2046 and Unit 2 through 2047.
  Source: Braidwood Clean Energy Center | Constellation Energy Locations (https://www.constellationenergy.com/about/locations/braidwood-clean-energy-center.html)
- 2021-06-02 — Premature-retirement risk and operating commitment
  Braidwood cleared the relevant PJM capacity auction but faced premature-retirement risk; Exelon committed the plant to operate through May 2023 while policy outcomes were resolved.
  Source: FORM8-K June 2, 2021 (https://investors.exeloncorp.com/static-files/6b3197bb-e60e-4ef6-b1bd-5885966439b3)
- 2023-02-21 — Turbine upgrade announced
  Constellation announced a combined $800 million investment in new equipment at Braidwood and Byron, including high-efficiency main-turbine replacements expected to add approximately 135 MW across the two plants.
  Source: Constellation Making Major Investment in Two Illinois Nuclear Plants to Increase Clean Energy Output (https://www.constellationenergy.com/news/2023/Constellation-Making-Major-Investment-in-Two-Illinois-Nuclear-Plants-to-Increase-Clean-Energy-Output.html)

## Sources

- [Braidwood Clean Energy Center | Constellation Energy Locations](https://www.constellationenergy.com/about/locations/braidwood-clean-energy-center.html) — constellationenergy.com · tier other
- [2026 Generation](https://www.eia.gov/nuclear/generation/xls/usreact26.xlsx) — eia.gov · tier regulatory
- [Nuclear reactor Ownership](https://www.eia.gov/nuclear/reactors/reactorcapacity.php) — eia.gov · tier regulatory
- [Sheet1](https://www.pjm.com/-/media/DotCom/markets-ops/rpm/rpm-auction-info/2025-2026/2025-2026-rpm-existing-resource-list-post.xlsx) — pjm.com · tier other
- [Braidwood Station 1 and 2 / Byron Station 1 and 2 Approved Power Uprate Application Information | Nuclear Regulatory Commission](https://www.nrc.gov/reactors/operating/licensing/power-uprates/pwr-stretch/braidwood1-2-byron-pu) — nrc.gov · tier regulatory
- [Braidwood Station, Units 1 and 2 - Environmental ...](https://www.nrc.gov/docs/ML2417/ML24172A126.pdf) — nrc.gov · tier regulatory
- [Safety Evaluation Report, Related to the License Renewal of Byron Station, Units 1 and 2, and Braidwood Station, Units 1 and 2 – Docket Nos. 50-454, 50-455, 50-456, and 50-457 – Exelon Generation Company, LLC – Sections 1 to 3 (NUREG-2190, Volume 1) | Nuclear Regulatory Commission](https://www.nrc.gov/reading-rm/doc-collections/nuregs/staff/sr2190/v1/index) — nrc.gov · tier regulatory
- [Sargent & Lundy: Homepage](https://www.sargentlundy.com/) — sargentlundy.com · tier other
- [Source](https://pjm.com/-/media/DotCom/etools/capacity-exchange/erpm-designated.csv) — pjm.com · tier other
- [Source](https://constellationenergy.com/about/locations/braidwood-clean-energy-center.html) — constellationenergy.com · tier other
- [Braidwood Clean Energy Center - Nuclear Powers Illinois](https://www.nuclearpowersillinois.com/braidwood_clean_energy_center) — nuclearpowersillinois.com · tier other
- [Braidwood 2](https://world-nuclear.org/nuclear-reactor-database/details/braidwood-2) — world-nuclear.org · tier other
- [Braidwood Station, Units 1 And 2 – Review of the Unit 1 Updated Fall 2022 and the Unit 2 Spring 2023 Steam Generator Tube Inspection Reports (EPID: L-2024-LRO-0047)](https://www.nrc.gov/docs/ML2506/ML25069A668.pdf) — nrc.gov · tier regulatory
- [Pressurized Water Reactor (PWR) | Westinghouse Nuclear](https://westinghousenuclear.com/nuclear-fuel/pressurized-water-reactor-pwr/) — westinghousenuclear.com · tier other
- [Steam Generators](https://www.babcock.com/home/products-services/steam-generators/steam-generators) — babcock.com · tier other
- [Federal Register :: In the Matter of Commonwealth Edison Company (Braidwood Station, Units 1 and 2); Order Approving Transfer of Licenses and Conforming Amendments](https://www.federalregister.gov/documents/2000/08/14/00-20579/in-the-matter-of-commonwealth-edison-company-braidwood-station-units-1-and-2-order-approving) — federalregister.gov · tier regulatory
- [Constellation Making Major Investment in Two Illinois Nuclear Plants to Increase Clean Energy Output](https://www.constellationenergy.com/news/2023/Constellation-Making-Major-Investment-in-Two-Illinois-Nuclear-Plants-to-Increase-Clean-Energy-Output.html) — constellationenergy.com · tier other
- [FORM8-K June 2, 2021](https://investors.exeloncorp.com/static-files/6b3197bb-e60e-4ef6-b1bd-5885966439b3) — investors.exeloncorp.com · tier other
- [Form 10-Q for Constellation Energy Corp filed 11/04/2024](https://investors.constellationenergy.com/static-files/0d3ac060-a335-42ba-aabf-c4847058dd46) — investors.constellationenergy.com · tier other
- [Braidwood 1 - World Nuclear Association](https://www.world-nuclear.org/nuclear-reactor-database/details/braidwood-1) — world-nuclear.org · tier other
- [Braidwood 2 - World Nuclear Association](https://www.world-nuclear.org/nuclear-reactor-database/details/braidwood-2) — world-nuclear.org · tier other
- [Source](https://www.nrc.gov/info-finder/reactors/quad2) — nrc.gov · tier regulatory
- [Source](https://sargentlundy.com/) — sargentlundy.com · tier other
- [Source](https://investors.constellationenergy.com/static-files/48ac7f07-a620-4bf5-aa48-6e656992d8aa) — investors.constellationenergy.com · tier other
- [Reliability Resource Initiative Additional Summaries](https://www.pjm.com/-/media/DotCom/committees-groups/committees/pc/2025/20250506/20250506-rri-addendum---post-meeting.pdf) — pjm.com · tier other
- [20250919-constellation-2026-epp.pdf - Illinois Power Agency](https://ipa.illinois.gov/content/dam/soi/en/web/ipa/documents/20250919-constellation-2026-epp.pdf) — ipa.illinois.gov · tier regulatory

## Data quality

- The August 2000 event is documented as a regulated corporate and license transfer from Commonwealth Edison to Exelon Generation, rather than an arm’s-length sale; the cited NRC materials do not state purchase consideration. The $800 million announced in February 2023 is a combined Braidwood-and-Byron capital investment; no site-specific Braidwood allocation or completion date is stated. The NRC transfer order’s decommissioning-trust minimums are not acquisition consideration or project-financing proceeds. Braidwood faced a potential premature-retirement risk in 2021, but the plant was committed to operate through May 2023 and its renewed licenses remain valid through 2046 and 2047.

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