# Croydon CT Generating Station

PJM Petroleum Liquids · https://askthegrid.com/assets/facilities/croydon-ct-generating-station

Croydon CT Generating Station is a petroleum liquids facility with 546.4 MW of EIA-reported nameplate capacity in Bucks County, Pennsylvania, registered as EIA Plant ID 8012. Constellation Power, Inc is the registered plant entity or operator. Commercial operation began in June 1974.

## Key facts

- Technology: Petroleum Liquids
- Power capacity: 546.4 MW
- Operating status: operating

## Grid and market context

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

## Source-backed facts

- Owner logo domain: constellationenergy.com — Croydon Generating Station | Constellation Energy Locations · confidence: high
- Identifiers: [{"value":"8012","system":"EIA plant ID"},{"value":"6035","system":"EIA utility ID"},{"value":"PJM Interconnection (PJM)","system":"ISO/RTO"},{"value":"CROYDON 11 (49 ICAP MW; PECO/EMAAC)","system":"PJM RPM market resource"},{"value":"CROYDON 12 (49 ICAP MW; PECO/EMAAC)","system":"PJM RPM market resource"},{"value":"CROYDON 21 (49 ICAP MW; PECO/EMAAC)","system":"PJM RPM market resource"},{"value":"CROYDON 22 (49 ICAP MW; PECO/EMAAC)","system":"PJM RPM market resource"},{"value":"CROYDON 31 (49 ICAP MW; PECO/EMAAC)","system":"PJM RPM market resource"},{"value":"CROYDON 32 (48 ICAP MW; PECO/EMAAC)","system":"PJM RPM market resource"},{"value":"CROYDON 41 (49 ICAP MW; PECO/EMAAC)","system":"PJM RPM market resource"},{"value":"CROYDON 42 (49 ICAP MW; PECO/EMAAC)","system":"PJM RPM market resource"},{"value":"09-00016","system":"PA DEP Title V operating permit"},{"value":"1480938","system":"PA DEP authorization ID"},{"value":"031 — Simple Cycle Turbine #11","system":"PA DEP emission unit"},{"value":"032 — Simple Cycle Turbine #12","system":"PA DEP emission unit"},{"value":"033 — Simple Cycle Turbine #21","system":"PA DEP emission unit"},{"value":"034 — Simple Cycle Turbine #22","system":"PA DEP emission unit"},{"value":"035 — Simple Cycle Turbine #31","system":"PA DEP emission unit"},{"value":"036A — Simple Cycle Turbine #32","system":"PA DEP emission unit"},{"value":"037 — Simple Cycle Turbine #41","system":"PA DEP emission unit"},{"value":"038 — Simple Cycle Turbine #42","system":"PA DEP emission unit"}] — EIA - MBR Portal - FERC · confidence: medium
- Identifiers: [{"value":"8012","system":"EIA plant ID"},{"value":"6035","system":"EIA utility ID"},{"value":"PJM Interconnection (PJM)","system":"ISO/RTO"},{"value":"CROYDON 11 (49 ICAP MW; PECO/EMAAC)","system":"PJM RPM market resource"},{"value":"CROYDON 12 (49 ICAP MW; PECO/EMAAC)","system":"PJM RPM market resource"},{"value":"CROYDON 21 (49 ICAP MW; PECO/EMAAC)","system":"PJM RPM market resource"},{"value":"CROYDON 22 (49 ICAP MW; PECO/EMAAC)","system":"PJM RPM market resource"},{"value":"CROYDON 31 (49 ICAP MW; PECO/EMAAC)","system":"PJM RPM market resource"},{"value":"CROYDON 32 (48 ICAP MW; PECO/EMAAC)","system":"PJM RPM market resource"},{"value":"CROYDON 41 (49 ICAP MW; PECO/EMAAC)","system":"PJM RPM market resource"},{"value":"CROYDON 42 (49 ICAP MW; PECO/EMAAC)","system":"PJM RPM market resource"},{"value":"09-00016","system":"PA DEP Title V operating permit"},{"value":"1480938","system":"PA DEP authorization ID"},{"value":"031 — Simple Cycle Turbine #11","system":"PA DEP emission unit"},{"value":"032 — Simple Cycle Turbine #12","system":"PA DEP emission unit"},{"value":"033 — Simple Cycle Turbine #21","system":"PA DEP emission unit"},{"value":"034 — Simple Cycle Turbine #22","system":"PA DEP emission unit"},{"value":"035 — Simple Cycle Turbine #31","system":"PA DEP emission unit"},{"value":"036A — Simple Cycle Turbine #32","system":"PA DEP emission unit"},{"value":"037 — Simple Cycle Turbine #41","system":"PA DEP emission unit"},{"value":"038 — Simple Cycle Turbine #42","system":"PA DEP emission unit"}] — Sheet1 · confidence: medium
- Canonical name: Croydon CT Generating Station — EIA - MBR Portal - FERC · confidence: high
- Identifiers.1: {"value":"6035","system":"EIA utility ID"} — EIA - MBR Portal - FERC · confidence: medium
- Identifiers.2: {"value":"PJM Interconnection (PJM)","system":"ISO/RTO"} — Sheet1 · confidence: high
- Identifiers.3: {"value":"CROYDON 11 (49 ICAP MW; PECO/EMAAC)","system":"PJM RPM market resource"} — Sheet1 · confidence: high
- Identifiers.4: {"value":"CROYDON 12 (49 ICAP MW; PECO/EMAAC)","system":"PJM RPM market resource"} — Sheet1 · confidence: high
- Identifiers.5: {"value":"CROYDON 21 (49 ICAP MW; PECO/EMAAC)","system":"PJM RPM market resource"} — Sheet1 · confidence: high
- Identifiers.6: {"value":"CROYDON 22 (49 ICAP MW; PECO/EMAAC)","system":"PJM RPM market resource"} — Sheet1 · confidence: high
- Identifiers.7: {"value":"CROYDON 31 (49 ICAP MW; PECO/EMAAC)","system":"PJM RPM market resource"} — Sheet1 · confidence: high
- Identifiers.8: {"value":"CROYDON 32 (48 ICAP MW; PECO/EMAAC)","system":"PJM RPM market resource"} — Sheet1 · confidence: high
- Identifiers.9: {"value":"CROYDON 41 (49 ICAP MW; PECO/EMAAC)","system":"PJM RPM market resource"} — Sheet1 · confidence: high
- Identifiers.10: {"value":"CROYDON 42 (49 ICAP MW; PECO/EMAAC)","system":"PJM RPM market resource"} — Sheet1 · confidence: high
- Identifiers.11: {"value":"09-00016","system":"PA DEP Title V operating permit"} — 1480938[09-00016]_Issued_v1.pdf · confidence: high
- Identifiers.12: {"value":"1480938","system":"PA DEP authorization ID"} — 1480938[09-00016]_Issued_v1.pdf · confidence: high
- Parties.1: {"relationship":"Operator","name":"Constellation","official_url":"https://www.constellationenergy.com/about/locations/croydon-generating-station.html"} — Croydon Generating Station | Constellation Energy Locations · confidence: high
- Parties.3: {"relationship":"OEM","name":"General Electric (GE)","official_url":"https://www.gevernova.com/gas-power/products/gas-turbines"} — Source · confidence: high
- Unit configuration: Eight General Electric Frame 7B simple-cycle combustion-turbine generators (units 11, 12, 21, 22, 31, 32, 41, and 42), fired with No. 2 fuel oil and/or kerosene; nominally 64 MW per unit. — Source · confidence: medium
- Unit count: 8 — Croydon Generating Station | Constellation Energy Locations · confidence: high
- Construction scope: Eight General Electric Frame 7B simple-cycle combustion turbine-generator units, nominally rated at 64 MW each, fired on No. 2 fuel oil and/or kerosene. — RACT III Proposal · confidence: high
- Product url: https://www.gevernova.com/gas-power/services/gas-turbines/upgrades/7extend-upgrade-package — 7Extend Upgrade Package · confidence: medium
- Kind: thermal — Source · confidence: high
- Manufacturer domain: gevernova.com — 7Extend Upgrade Package · confidence: medium
- Equipment models: [{"manufacturer_domain":"gevernova.com","product_url":"https://www.gevernova.com/gas-power/services/gas-turbines/upgrades/7extend-upgrade-package","count":8,"unit_mw":64,"name":"General Electric Frame 7B combustion turbine-generator"}] — RACT III Proposal · confidence: high
- Product family: Frame 7B — RACT III Proposal · confidence: high
- Product family: Frame 7B — 7Extend Upgrade Package · confidence: high
- Manufacturer name: General Electric (GE) — RACT III Proposal · confidence: high
- Equipment models.0: {"manufacturer_domain":"gevernova.com","product_url":"https://www.gevernova.com/gas-power/services/gas-turbines/upgrades/7extend-upgrade-package","count":8,"unit_mw":64,"name":"General Electric Frame 7B combustion turbine-generator"} — RACT III Proposal · confidence: high
- Significance: Croydon is an operating eight-unit oil-fueled peaking facility used for peak-demand support and load balancing in Constellation's generation portfolio. Its current corporate plant schedule lists 391 MW across eight oil peaking units in West Bristol, Pennsylvania. — Croydon Generating Station | Constellation Energy Locations · confidence: medium
- Significance: Croydon is an operating eight-unit oil-fueled peaking facility used for peak-demand support and load balancing in Constellation's generation portfolio. Its current corporate plant schedule lists 391 MW across eight oil peaking units in West Bristol, Pennsylvania. — ceg-20251231 · confidence: medium
- Quality notes: ["Capacity figures vary by convention: an EIA-derived inventory reports 546.4 MW of total nameplate capacity, while Constellation's current plant schedule reports 391 MW for the eight-unit oil-peaking plant.","The documented January 2001 PECO-to-Exelon change was a corporate restructuring, not a priced third-party sale; no Croydon-specific acquisition consideration or project-financing amount is stated.","Regenerative-to-simple-cycle conversions and environmental-control proposals should not be characterized as a new-unit expansion or full repowering; current records continue to list the same eight-unit oil peaking configuration.","The current corporate plant schedule continues to list Croydon as an eight-unit, 391 MW oil peaking facility; it does not state a retirement date."] — ceg-20251231 · confidence: medium
- Financing summary: No Croydon-specific project debt, financing amount, acquisition price, or sale consideration is disclosed. The January 2001 change from PECO Energy to Exelon Generation was an internal transfer of generating assets under Exelon's corporate restructuring, not a documented arm's-length acquisition. A 2016 RACT filing modeled capital-recovery costs of $3,346,962 and $6,692,419 for alternative emissions-control technologies, but those are control-cost scenarios rather than disclosed project financing. — Source · confidence: medium
- Financing summary: No Croydon-specific project debt, financing amount, acquisition price, or sale consideration is disclosed. The January 2001 change from PECO Energy to Exelon Generation was an internal transfer of generating assets under Exelon's corporate restructuring, not a documented arm's-length acquisition. A 2016 RACT filing modeled capital-recovery costs of $3,346,962 and $6,692,419 for alternative emissions-control technologies, but those are control-cost scenarios rather than disclosed project financing. — ceg-20251231 · confidence: medium
- Commercial parties.1: {"relationship":"Operator","name":"Constellation","detail":"Operates Croydon as an oil-fueled peaking facility used for peak energy demand and load balancing.","official_url":"https://www.constellationenergy.com/about/locations/croydon-generating-station.html"} — Croydon Generating Station | Constellation Energy Locations · confidence: high
- Commercial parties.6: {"relationship":"ISO/RTO and capacity-market administrator","name":"PJM Interconnection","detail":"Croydon units appear in PJM's existing capacity-resource records in the PECO/EMAAC area.","official_url":"https://www.pjm.com"} — Source · confidence: high
- Timeline.1: {"event":"Construction and equipment delivery","date":"1973","detail":"GE technical records associated with the Croydon/Richmond 7B package identify equipment with 1972-1973 ship years, including 1973 equipment for the Croydon peaking-station configuration."} — Source · confidence: medium
- Timeline.4: {"event":"Regenerative-to-simple-cycle conversions","date":"1990-2004","detail":"GE technical records identify regenerative-to-simple-cycle conversions associated with Croydon turbine serials in 1990, 2002, and 2004. These were unit modifications, not a new-unit expansion or full repowering."} — Source · confidence: medium
- Timeline.6: {"event":"Corporate separation into Constellation","date":"2022-02-01","detail":"Exelon completed the separation of Constellation from Exelon at 12:01 a.m. Eastern Time, transferring the competitive-generation business into the standalone Constellation corporate group."} — Investor Relations - Exelon Corporation · confidence: medium
- Quality notes.0: Capacity figures vary by convention: an EIA-derived inventory reports 546.4 MW of total nameplate capacity, while Constellation's current plant schedule reports 391 MW for the eight-unit oil-peaking plant. — ceg-20251231 · confidence: medium
- Quality notes.1: The documented January 2001 PECO-to-Exelon change was a corporate restructuring, not a priced third-party sale; no Croydon-specific acquisition consideration or project-financing amount is stated. — ceg-20251231 · confidence: medium
- Quality notes.2: Regenerative-to-simple-cycle conversions and environmental-control proposals should not be characterized as a new-unit expansion or full repowering; current records continue to list the same eight-unit oil peaking configuration. — Source · confidence: medium
- Quality notes.3: The current corporate plant schedule continues to list Croydon as an eight-unit, 391 MW oil peaking facility; it does not state a retirement date. — ceg-20251231 · confidence: medium
- Status detail: The exact EIA plant is operational. Its eight listed combustion-turbine units—11, 12, 21, 22, 31, 32, 41, and 42—are each reported as operating; no unit-level standby, mothballing, or retirement status is shown in the current plant record. The current sources do not provide a formal whole-plant retirement, deactivation, seasonal-operation, fuel-conversion, or repowering date. — Croydon Generating Station | Constellation Energy Locations · confidence: medium
- Grid role: Peaking generation used as needed during peak-demand periods and for load balancing. — Croydon Generating Station | Constellation Energy Locations · confidence: high
- Operating status: operating — Croydon CT Generating Station - Global Energy Monitor · confidence: high

## Timeline

- 1974 — Commercial commissioning
  Pennsylvania regulatory records state that all eight distillate-oil-fired GE Frame 7B combustion-turbine generators were commissioned in 1974.
  Source: Source (https://downloads.regulations.gov/EPA-R03-OAR-2021-0380-0002/attachment_3.pdf)
- 2001-01-01 — Internal ownership transfer
  Exelon transferred PECO's electric-generating assets to Exelon Generation effective January 1, 2001. Exelon's asset schedule listed Croydon GT among the generation assets held by Exelon Generation; this was a corporate restructuring rather than a documented third-party sale.
  Source: Exelon Corporation (https://investors.exeloncorp.com/static-files/7b70f7ff-f883-47af-84c9-1cb90f384594)

## Sources

- [Croydon Generating Station | Constellation Energy Locations](https://www.constellationenergy.com/about/locations/croydon-generating-station.html) — constellationenergy.com · tier other
- [EIA - MBR Portal - FERC](https://mbrweb.ferc.gov/SearchlkpEIA/Index?page=121) — mbrweb.ferc.gov · tier regulatory
- [Sheet1](https://www.pjm.com/-/media/DotCom/markets-ops/rpm/rpm-auction-info/2026-2027/2026-2027-rpm-existing-resource-list-post.xlsx) — pjm.com · tier other
- [1480938[09-00016]_Issued_v1.pdf](https://files.dep.state.pa.us/air/AirQuality/AQPortalFiles/Permits/PermitDocuments/1480938[09-00016]_Issued_v1.pdf) — files.dep.state.pa.us · tier other
- [RACT III Proposal](https://files.dep.state.pa.us/Air/AirQuality/AQPortalFiles/Permits/RACT/RACT%20II%20is%20RACT%20III/Exelon%20Generation%20Co%20Croydon%20Station/RACT%20III%20Proposal.pdf) — files.dep.state.pa.us · tier other
- [7Extend Upgrade Package](https://www.gevernova.com/gas-power/services/gas-turbines/upgrades/7extend-upgrade-package) — gevernova.com · tier other
- [ceg-20251231](https://www.sec.gov/Archives/edgar/data/1868275/000186827526000032/ceg-20251231.htm) — sec.gov · tier regulatory
- [Source](https://downloads.regulations.gov/EPA-R03-OAR-2021-0380-0002/attachment_3.pdf) — downloads.regulations.gov · tier regulatory
- [Exelon Corporation](https://investors.exeloncorp.com/static-files/7b70f7ff-f883-47af-84c9-1cb90f384594) — investors.exeloncorp.com · tier other
- [Investor Relations - Exelon Corporation](https://investors.exeloncorp.com/static-files/96e979a6-d649-4a2a-8e43-95bfd34c67b6) — investors.exeloncorp.com · tier other
- [Source](https://files.dep.state.pa.us/Air/AirQuality/AQPortalFiles/Permits/RACT/RACT%20II%20is%20RACT%20III/Exelon%20Generation%20Co%20Croydon%20Station/RACT%20II%20Proposal.pdf) — files.dep.state.pa.us · tier other
- [Source](https://pjm.com/-/media/DotCom/markets-ops/rpm/rpm-auction-info/2026-2027/2026-2027-rpm-existing-resource-list-post.xlsx) — pjm.com · tier other
- [ceg-20221231](https://www.sec.gov/Archives/edgar/data/1868275/000186827523000014/ceg-20221231.htm) — sec.gov · tier regulatory
- [Croydon CT Generating Station - Global Energy Monitor](https://www.gem.wiki/Croydon_CT_Generating_Station) — gem.wiki · tier other

## Data quality

- Capacity figures vary by convention: an EIA-derived inventory reports 546.4 MW of total nameplate capacity, while Constellation's current plant schedule reports 391 MW for the eight-unit oil-peaking plant. The documented January 2001 PECO-to-Exelon change was a corporate restructuring, not a priced third-party sale; no Croydon-specific acquisition consideration or project-financing amount is stated. Regenerative-to-simple-cycle conversions and environmental-control proposals should not be characterized as a new-unit expansion or full repowering; current records continue to list the same eight-unit oil peaking configuration. The current corporate plant schedule continues to list Croydon as an eight-unit, 391 MW oil peaking facility; it does not state a retirement date.

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Canonical page: https://askthegrid.com/assets/facilities/croydon-ct-generating-station

Source: Ask the Grid — https://askthegrid.com/