Marsh Landing LLC - Contra Costa County - CAISO
Marsh Landing is a four-turbine gas-fired peaking plant near Antioch. It entered service in 2013 and later added an 11.5 MW / 10.5 MWh battery black-start system designed to support grid re-energization after an outage.
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Canonical EIA plant baseline.
plant-57267
Similar plants ranked by technology, capacity, and distance.
Operating generator records and technology attributes reported through EIA-860.
| Generator | Capacity | Technology | Operation | Status |
|---|---|---|---|---|
| 1 | 207 MW 191.9 MW summer | Natural Gas Fired Combustion Turbine Natural Gas · GT | May 2013 | Operating |
| 2 | 207 MW 191.1 MW summer | Natural Gas Fired Combustion Turbine Natural Gas · GT | May 2013 | Operating |
| 3 | 207 MW 190.4 MW summer | Natural Gas Fired Combustion Turbine Natural Gas · GT | May 2013 | Operating |
| 4 | 207 MW 191.8 MW summer |
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.
Project milestones and public references behind the asset profile.
GenOn Marsh Landing, LLC (later known as Marsh Landing LLC) was formed as a Delaware limited liability company to develop, finance, construct, operate, and maintain the Marsh Landing generating facility.
Natural Gas Fired Combustion Turbine Natural Gas · GT |
| May 2013 |
| Operating |
Monthly generation is reported through EIA-923. Capacity factor uses the current EIA nameplate capacity and is shown only for complete calendar years.
Portfolio membership follows the latest EIA-860 reporting entity. It does not imply ultimate ownership.
Marsh Landing entered into a ten-year power purchase agreement with Pacific Gas & Electric Company for 720 MW of natural-gas-fired peaking generation.
Marsh Landing entered into a lump-sum, fixed-price turnkey engineering, procurement, and construction (EPC) agreement with Kiewit Power Constructors Co. for design and construction of the facility on a turnkey basis.
The California Energy Commission certified the Marsh Landing project under docket 08-AFC-03.
Mirant directed Kiewit to commence engineering and procurement for Marsh Landing; construction was scheduled for completion by mid-2013.
Mirant Marsh Landing, LLC closed a $650 million project credit facility comprising $500 million of construction and term debt and $150 million of letters of credit for project financing.
Mirant Corporation merged with RRI Energy, Inc., with Mirant continuing as a wholly-owned subsidiary. Upon closing, RRI Energy was renamed GenOn Energy, Inc., and Mirant was renamed GenOn Energy Holdings, Inc. This transition transferred project company ownership to the GenOn platform.
NRG Energy, Inc. acquired 100% of GenOn Energy, Inc., thereby acquiring 100% of the Marsh Landing project. The project was then under construction.
EIA-860 lists generator 1, generator 2, generator 3, generator 4 with this operating date.
NRG transferred 100% ownership of Marsh Landing to NRG Yield LLC, a subsidiary formed by NRG to hold contracted renewable and conventional generation assets.
NRG transferred its full ownership interest in NRG Yield LLC to Clearway Energy Group LLC and subsequently sold 100% of its interests in Clearway Energy Group LLC to an affiliate of Global Infrastructure Partners III (GIP). Marsh Landing remained as a 100%-owned asset within the Clearway structure.
The California Energy Commission approved a post-certification amendment (TN 227326) authorizing installation of a battery energy storage system to provide CAISO black-start service in response to grid resilience needs.
Siemens Energy announced a contract to design, build, and commission Marsh Landing's black-start battery energy storage system, including Fluence Gridstack configuration, transformers, switchgear, and control-system modifications.
California Energy Commission staff approved modification of the previously authorized BESS to use CATL lithium ferrous phosphate (LFP) battery chemistry instead of lithium cobalt oxide chemistry for improved reliability and capacity.
Answered from the published record above. Questions whose inputs this profile does not carry are omitted rather than estimated.
Marsh Landing Generating Station has a reported capacity of 828 MW. Source: EIA Form 860M.
Marsh Landing Generating Station is a Natural Gas Fired Combustion Turbine facility in Contra Costa County, CA, participating in the CAISO market.
Marsh Landing Generating Station is in Contra Costa County, CA, inside the CAISO balancing area.
Marsh Landing Generating Station is operated by Marsh Landing LLC according to the EIA generator inventory. Reporting membership does not by itself establish ultimate ownership.
Marsh Landing Generating Station reported 17.8 GWh over the twelve months to 2026-04. Figures are net generation as filed to EIA-923.
By capacity, Marsh Landing Generating Station ranks #22 of 825 operating plants of the same technology nationally. It ranks #1 of 136 in CA.
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.