Colusa Generating Station
Pacific Gas and Electric CompanyColusa County
Colusa Generating Station is PG&E's dry-cooled combined-cycle plant near Maxwell, California. The California Energy Commission describes the project as 660 MW, while the EIA-anchored profile reports 712.4 MW of nameplate capacity.
Mapped infrastructure geometry associated with this asset.
EIA plant 56532 · Inventory for Aug 2026.
| Generator | Technology | Status | Power (MW) | Energy (MWh) |
|---|---|---|---|---|
| A | Natural Gas Fired Combined Cycle | Operating | 181.5 | Unknown |
| B | Natural Gas Fired Combined Cycle | Operating | 181.5 | Unknown |
| C | Natural Gas Fired Combined Cycle | Operating | 349.4 | Unknown |
Similar plants ranked by technology, capacity, and distance.
Operating generator records and technology attributes reported through EIA-860.
| Generator | Capacity | Technology | Operation | Status |
|---|---|---|---|---|
| A | 181.5 MW 167 MW summer | Natural Gas Fired Combined Cycle Natural Gas · CT | Dec 2010 | Operating |
| B | 181.5 MW 167 MW summer | Natural Gas Fired Combined Cycle Natural Gas · CT | Dec 2010 | Operating |
| C | 349.4 MW 306 MW summer | Natural Gas Fired Combined Cycle Natural Gas · CA | Dec 2010 | Operating |
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.
| Largest reported plants | Capacity | State | |
|---|---|---|---|
| Diablo Canyon | 2,323 MW | CA | |
| Helms Pumped Storage | 1,053 MW | CA | |
Project milestones and public references behind the asset profile.
The California Public Utilities Commission approved a purchase-and-sale agreement under which E&L Westcoast Holdings, LLC and E&L Westcoast, LLC would develop and construct the Colusa Project as a turn-key facility, to be transferred to PG&E upon completion and performance testing for PG&E to own and operate as a utility asset subject to cost-of-service ratemaking and cost-recovery caps.
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.
E&L Westcoast Holdings informed PG&E that it did not intend to proceed with the Colusa Project and would exercise its contractual right to terminate the original purchase-and-sale agreement, creating the need for PG&E to take over development to prevent project failure.
PG&E and E&L Westcoast Holdings executed a new purchase-and-sale agreement under which PG&E agreed to acquire the project's development assets and permitting from E&L, allowing PG&E to complete development and construct the facility as owner-builder. Acquisition closing was expected in December 2007 subject to completion of due diligence.
PG&E completed its acquisition of the Colusa Project development assets from E&L Westcoast.
The California Public Utilities Commission granted PG&E a Certificate of Public Convenience and Necessity to construct the Colusa Power Project, contingent on California Energy Commission certification. The CPUC set a maximum reasonable-and-prudent cost of $684 million. PG&E was authorized to proceed as owner-builder under the previously approved ratemaking framework.
EIA-860 lists generator A, generator B, generator C with this operating date.
Answered from the published record above. Questions whose inputs this profile does not carry are omitted rather than estimated.
Colusa Generating Station reports 712.4 MW natural gas of operating nameplate capacity. These technology ratings do not establish a common export limit. Source: EIA Aug 2026.
Colusa Generating Station is a Natural Gas Fired Combined Cycle facility in Colusa County, CA, participating in the CAISO market.
Colusa Generating Station is in Colusa County, CA, inside the CAISO balancing area.
Colusa Generating Station is operated by Pacific Gas & Electric Co. according to the EIA generator inventory. Reporting membership does not by itself establish ultimate ownership.
Colusa Generating Station reported 1,902.3 GWh over the twelve months to 2026-07. Figures are net generation as filed to EIA-923.
By capacity, Colusa Generating Station ranks #176 of 540 operating plants of the same technology nationally. It ranks #7 of 64 in CA.