# Sayreville Cogeneration Facility

PJM Natural Gas Fired Combined Cycle · https://askthegrid.com/assets/facilities/sayreville-cogeneration-facility

Sayreville Cogeneration Facility is a natural gas-fired power facility with 430.2 MW of EIA-reported nameplate capacity in Middlesex County, New Jersey, registered as EIA Plant ID 10308. Dynegy Northeast Generation GP, Inc. and Dynegy Northeast Associates LP, Inc. is the current owner; Sayreville Power Generation LP is the registered plant entity or operator. Its grid role is base-load operation with flexibility for varying output based on ambient conditions.

## Key facts

- Technology: Natural Gas Fired Combined Cycle
- Power capacity: 430.20000000000005 MW
- Operating status: operating

## Grid and market context

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

## Source-backed facts

- Owner logo domain: vistracorp.com — OUR COMPANY · confidence: medium
- Identifiers.8: {"value":"18072","system":"NJDEP Program Interest / facility ID"} — Source · confidence: high
- Parties.3: {"relationship":"Original plant builder / OEM","name":"Westinghouse","official_url":"https://www.westinghouse.com/"} — Sayreville Energy Center · confidence: medium
- Construction scope: The facility comprises two 143.4 MW natural-gas combined-cycle combustion turbines (CT1 and CT2), one 143.4 MW combined-cycle steam turbine (ST1), and three 3.25 MW black-start emergency generators (EG-1, EG-2, and EG-3). NJDEP identifies the two combustion turbines as Westinghouse W501D5 units; the emergency-generator sets are identified as Kohler 3250REOZD units with MTU Detroit Diesel engines. Siemens Energy is separately reported as the EPC contractor, turbine supplier, and electric-generator supplier. — Power plant profile: Sayreville Combined Cycle Power Plant, US · confidence: medium
- Construction scope: The facility comprises two 143.4 MW natural-gas combined-cycle combustion turbines (CT1 and CT2), one 143.4 MW combined-cycle steam turbine (ST1), and three 3.25 MW black-start emergency generators (EG-1, EG-2, and EG-3). NJDEP identifies the two combustion turbines as Westinghouse W501D5 units; the emergency-generator sets are identified as Kohler 3250REOZD units with MTU Detroit Diesel engines. Siemens Energy is separately reported as the EPC contractor, turbine supplier, and electric-generator supplier. — Source · confidence: medium
- Product url: https://spectra.mhi.com/energy-transition/turbines-back-in-the-usa — Turbines back in the USA | Spectra by MHI · confidence: medium
- Product url: https://spectra.mhi.com/energy-transition/turbines-back-in-the-usa — SGT5-2000E Heavy-duty gas turbine (50Hz) · confidence: medium
- Equipment models.0: {"manufacturer_domain":"https://www.spectra.mhi.com","product_url":"https://spectra.mhi.com/energy-transition/turbines-back-in-the-usa","count":2,"unit_mw":143.4,"name":"Westinghouse W501D5 combined-cycle combustion turbine"} — Source · confidence: high
- Timeline.0: {"event":"Construction and opening","date":"1991","detail":"The Westinghouse-built combined-cycle plant opened in 1991."} — Sayreville Energy Center · confidence: medium
- Timeline.1: {"event":"Commercial operation","date":"1991-08","detail":"The first generating unit came online in August 1991. FERC later stated that no portion of the facility had been permanently deactivated since entering commercial operation."} — Source · confidence: high
- Timeline.4: {"event":"FERC approval","date":"2020-02","detail":"FERC approved the NELP ownership transaction. The transaction documentation did not disclose a purchase price."} — 0001692819-20-000010 · confidence: high
- Timeline.5: {"event":"Acquisition closing","date":"2020-03-02","detail":"The ownership exchange closed. Vistra indirectly acquired 100% of North Jersey Energy Associates, the holding company owning the Sayreville facility, and NextEra ceased to hold an ownership interest in Sayreville through that structure."} — 0001692819-20-000010 · confidence: high
- Commercial parties.0: {"relationship":"Current owner and operator / permittee","name":"Sayreville Power Generation LP","detail":"Current legal owner and operator identified in the New Jersey DEP permit record; the EIA-linked plant record identifies it as the operator of EIA plant 10308.","official_url":null} — Source · confidence: high
- Commercial parties.5: {"relationship":"Original builder / equipment supplier","name":"Westinghouse","detail":"The plant is identified as built by Westinghouse and opened in 1991.","official_url":"https://www.westinghouse.com/"} — Sayreville Energy Center · confidence: medium
- Commercial parties.5: {"relationship":"Original builder / equipment supplier","name":"Westinghouse","detail":"The plant is identified as built by Westinghouse and opened in 1991.","official_url":"https://www.westinghouse.com/"} — Westinghouse Electric Corporation · confidence: medium

## Timeline

- 1991 — Construction and opening
  The Westinghouse-built combined-cycle plant opened in 1991.
  Source: Sayreville Energy Center (https://en.wikipedia.org/wiki/Sayreville_Energy_Center)

## Sources

- [OUR COMPANY](https://vistracorp.com/about/) — vistracorp.com · tier other
- [Source](https://dep.nj.gov/wp-content/uploads/boss/public-notices/18072-bop190002-proposedpermit.pdf) — dep.nj.gov · tier regulatory
- [Statement of Basis](https://dep.nj.gov/wp-content/uploads/boss/public-notices/18072-bop190002-statementofbasis.pdf) — dep.nj.gov · tier regulatory
- [Sayreville Energy Center](https://en.wikipedia.org/wiki/Sayreville_Energy_Center) — en.wikipedia.org · tier other
- [Power plant profile: Sayreville Combined Cycle Power Plant, US](https://www.power-technology.com/data-insights/power-plant-profile-sayreville-combined-cycle-power-plant-us/) — power-technology.com · tier other
- [Turbines back in the USA | Spectra by MHI](https://spectra.mhi.com/energy-transition/turbines-back-in-the-usa) — spectra.mhi.com · tier other
- [SGT5-2000E Heavy-duty gas turbine (50Hz)](https://www.siemens-energy.com/global/en/home/products-services/product/sgt5-2000e.html) — siemens-energy.com · tier other
- [0001692819-20-000010](https://filecache.investorroom.com/mr5ir_vistracorp_ir/152/1Q-2020-10Q.pdf) — filecache.investorroom.com · tier other
- [Source](https://www.ferc.gov/sites/default/files/2020-06/20200306153236-ER20-756-000.pdf) — ferc.gov · tier regulatory
- [Westinghouse Electric Corporation](https://westinghouse.com/?srsltid=AfmBOopLpDSpVZstQf4kPnhfyQO0so3C-LF0CKY_8aF6ev61oSph5FIL) — westinghouse.com · tier other
- [vistra-20241231](https://www.sec.gov/Archives/edgar/data/1692819/000169281925000013/vistra-20241231.htm) — sec.gov · tier regulatory
- [Source](https://www.firstenergycorp.com/content/dam/corporate/transmission/Middlesex-Red-Oak-NJCEC-Fact-Sheet.pdf) — firstenergycorp.com · tier other

## Data quality

- The March 2020 ownership change was an upstream equity exchange rather than a disclosed cash sale. The $90 million acquisition amount and $123 million NELP disposition amount reported by Vistra are accounting figures and should not be treated as disclosed sale consideration. No plant-specific construction loan, project-finance facility, or refinancing amount was identified. Vistra's broader corporate credit facilities are not attributed specifically to Sayreville. these names should be treated as legal-entity or permit-name variations rather than separate nearby plants.

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