# Linden Cogen Plant

NYISO power_plant · https://askthegrid.com/nyiso/assets/plant/linden-cogen-plant

Linden Cogen Plant is a 974.1 MW natural-gas-fired combined-cycle cogeneration facility located in Linden, Union County, New Jersey, approximately 21 km southwest of New York City. The facility comprises six operating combined-cycle units: Linden Units 1–5 (approximately 800 MW) commissioned in May 1992, and Linden Unit 6 (approximately 172–180 MW) commissioned in January 2002. Units 1–5 sell electricity, capacity, and ancillary services into NYISO Zone J; Unit 6 supplies power to the adjacent Phillips 66 Bayway refinery and sells surplus capacity into PJM. and Phillips 66. Unit 6 was modified in 2022–2023 to enable hydrogen-blending capability of up to 40% with natural gas supplied by the Bayway refinery, reducing Unit 6 annual CO₂ emissions by approximately 10%.

## Key facts

- Technology: Natural Gas Fired Combined Cycle
- Power capacity: 974.1000000000001 MW

## Grid and market context

- ISO/RTO: NYISO
- Balancing authority: NYISO

## Source-backed facts

- Technical.commercial operation date: Units 1–5 May 1992; Unit 6 January 2002 — jera.co.jp · confidence: review_required
- Location.county: Union — mbrweb.ferc.gov · confidence: review_required
- Location.state: New Jersey — jera.co.jp · confidence: review_required
- Fuel.primary: natural gas — jera.co.jp · confidence: review_required
- Technology.description: natural gas-fired combined-cycle cogeneration — jera.co.jp · confidence: review_required

## Timeline

- 1992-05 — Units 1–5 commissioned
  Linden Units 1–5, comprising five gas turbines with three steam turbines and five heat-recovery steam boilers, achieved commercial operation in May 1992. The initial capacity was approximately 800 MW.
  Source: jera.co.jp (https://www.jera.co.jp/en/corporate/business/projects/linden)
- 2001 — GE 2055°F turbine upgrade and inlet air fogging installation
  In Spring 2001, Linden installed GE operating kits (2055°F upgrade) on each of the five Units 1–5 gas turbines. The kit replaced cooling stages and improved heat rate by 2.45% and turbine output by 4.9%. Inlet air fogging systems were also installed on each turbine.
  Source: epa.gov (https://www.epa.gov/sites/default/files/2015-07/documents/linden.pdf)
- 2002-01 — Unit 6 commissioned
  Linden Unit 6, a separate 172 MW gas-fired combined-cycle unit, achieved commercial operation in January 2002 and was interconnected to the PJM transmission system.
  Source: jera.co.jp (https://www.jera.co.jp/en/corporate/business/projects/linden)
- 2016-06 — Natural gas pipeline and metering infrastructure replacement
  Sargent & Lundy was contracted in mid-2016 to provide owner's engineer and construction-management services for replacing the single natural-gas supply pipeline with two independent gas supply lines and installing a metering station, completed by 2017.
  Source: sargentlundy.com (https://www.sargentlundy.com/projects/linden-cogeneration-plant-gas-pipeline-and-metering-station-project/)
- 2017-10-12 — JERA announced 50% equity acquisition agreement
  JERA announced an agreement to acquire a 50% equity interest in Linden Cogen Holdings from funds managed by Oaktree Capital Management and Ares Management and their co-investors through its wholly-owned subsidiary JERA Power U.S.A. Inc.
  Source: jera.co.jp (https://www.jera.co.jp/en/news/information/20171012_329)
- 2021-06-04 — EGCO acquired 28% equity interest in Linden TopCo
  EGCO Linden II, LLC completed acquisition of a 28% ownership interest in Linden TopCo from AEIF Linden SPV, LLC and Highstar Capital GP IV, L.P.
  Source: egco.com (https://www.egco.com/en/newsroom/press-releases/262/egco-group-completed-acquisition-of-28-stake-in-usa-gas-fired-cogeneration-facility)
- 2021-07 — Phillips 66 hydrogen-blending fuel-gas agreement
  Linden Cogen reached an agreement with Phillips 66 to receive hydrogen-containing refinery off-gas produced by the Bayway refinery for blending with natural gas to fuel Unit 6.
  Source: jeraamericascareers.com (https://jeraamericascareers.com/wp-content/uploads/2023/05/2021_0727_LindenCogen_P66_Hydrogen_Blending_FINAL.pdf)
- 2024-10-03 — Project-level debt refinancing completed
  EFS Cogen Holdings I LLC refinanced project-level debt, raising $1.0 billion in a senior secured Term Loan B, $60 million in a senior secured term letter-of-credit facility, and $55 million in a super-priority revolving credit facility. The Term Loan B is priced at 3.5% and matures October 3, 2031.
  Source: spglobal.com (https://www.spglobal.com/ratings/en/regulatory/article/-/view/type/HTML/id/3278993)
- 2025-12-12 — EGCO additional 10% stake acquisition completed
  EGCO Linden II, LLC completed acquisition of an additional 10% ownership interest in Linden TopCo, increasing EGCO's total ownership stake to 38%.
  Source: egco.com (https://www.egco.com/en/newsroom/press-releases/542/egco-group-completes-acquisition-of-additional-stake-in-linden-cogen)

## Sources

- [jeraamericascareers.com](https://jeraamericascareers.com/wp-content/uploads/2023/05/2021_0727_LindenCogen_P66_Hydrogen_Blending_FINAL.pdf) — jeraamericascareers.com · tier public_source
- [mbrweb.ferc.gov](https://mbrweb.ferc.gov/SearchlkpEIA/Index?page=191) — mbrweb.ferc.gov · tier authoritative
- [egco.com](https://www.egco.com/en/newsroom/press-releases/262/egco-group-completed-acquisition-of-28-stake-in-usa-gas-fired-cogeneration-facility) — egco.com · tier public_source
- [egco.com](https://www.egco.com/en/newsroom/press-releases/266/linden-cogeneration-announces-hydrogen-fuel-blending-arrangement-reducing-co2-emissions-by-10) — egco.com · tier public_source
- [egco.com](https://www.egco.com/en/newsroom/press-releases/542/egco-group-completes-acquisition-of-additional-stake-in-linden-cogen) — egco.com · tier public_source
- [epa.gov](https://www.epa.gov/sites/default/files/2015-07/documents/linden.pdf) — epa.gov · tier authoritative
- [jera.co.jp](https://www.jera.co.jp/en/corporate/business/projects/linden) — jera.co.jp · tier public_source
- [jera.co.jp](https://www.jera.co.jp/en/news/information/20171012_329) — jera.co.jp · tier public_source
- [sargentlundy.com](https://www.sargentlundy.com/projects/linden-cogeneration-plant-gas-pipeline-and-metering-station-project/) — sargentlundy.com · tier public_source
- [spglobal.com](https://www.spglobal.com/ratings/en/regulatory/article/-/view/type/HTML/id/3278993) — spglobal.com · tier public_source

## Data quality

- The facility is documented as approximately 974–980 MW depending on the source, measurement convention (nameplate vs. operating), and publication date. The EIA plant record value of 974.1 MW is used as the anchor, consistent with the requested identifier. Unit 6 capacity is reported as both 172 MW and 180 MW in different contexts. The 172 MW nameplate capacity is used for technical specifications; the 180 MW figure appears in market and financial filings reflecting operating or contract-rated capacity. EFS Cogen Holdings I LLC, Linden Cogen Holdings, and Linden TopCo, LLC are distinct legal entities with different roles in the ownership and project structure. EFS Cogen Holdings I LLC is the FERC/EIA-registered owner; Linden TopCo is the project holding and operating company owned by the equity sponsors. No unit retirement or whole-plant deactivation is identified in the available evidence. The documented changes are infrastructure upgrades (gas pipelines 2016–2017), equipment modifications (Unit 6 hydrogen-blending 2022–2023), and ownership stake transfers. Unit 6 hydrogen-blending commissioning was completed in June 2023, enabling up to 40% hydrogen co-firing with expected 10% annual CO₂ emissions reduction from that unit. The plant serves two distinct wholesale markets: NYISO Zone J for Units 1–5 (NYISO resource 939, PTID 23786) and PJM PSEG for Unit 6.
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