Tracy Combined Cycle Power Plant
MRP San Joaquin Energy LLCSan Joaquin County
The Tracy Combined Cycle Power Plant is a 336.1 MW natural-gas-fired combined-cycle generating facility located in unincorporated San Joaquin County near Tracy, California (14950 West Schulte Road). The facility consists of two General Electric Model PG 7121 EA combustion-turbine generators and one shared Alstom steam-turbine generator in a 2×1 configuration. It was created by converting and expanding the original 169 MW simple-cycle Tracy Peaker Plant, which was certified in 2002 and began operation in 2003. The conversion was approved by the California Energy Commission in 2010 and the combined-cycle configuration entered commercial operation on November 1, 2012. The plant interconnects at 115 kV to the PG&E Schulte Switching Station and is operated by MRP San Joaquin Energy LLC under a power purchase agreement with Pacific Gas and Electric Company. The facility serves as an independent power producer and exempt wholesale generator within CAISO and is recognized for reliable, flexible cycling ability and competitive start costs.
Mapped infrastructure geometry associated with this asset.
EIA plant 55933 · Inventory for Aug 2026.
| Generator | Technology | Status | Power (MW) | Energy (MWh) |
|---|---|---|---|---|
| TCC1 | Natural Gas Fired Combined Cycle | Operating | 167.3 | Unknown |
| TPP1 | Natural Gas Fired Combined Cycle | Operating | 84.4 | Unknown |
| TPP2 | Natural Gas Fired Combined Cycle | Operating | 84.4 | Unknown |
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Operating generator records and technology attributes reported through EIA-860.
| Generator | Capacity | Technology | Operation | Status |
|---|---|---|---|---|
| TCC1 | 167.3 MW 156.2 MW summer | Natural Gas Fired Combined Cycle Natural Gas · CA | Jul 2012 | Operating |
| TPP1 | 84.4 MW 82.1 MW summer | Natural Gas Fired Combined Cycle Natural Gas · CT | Apr 2003 | Operating |
| TPP2 | 84.4 MW 81.8 MW summer | Natural Gas Fired Combined Cycle Natural Gas · CT | Apr 2003 | Operating |
Monthly EIA generation history and recent market-resource behavior where linked telemetry is available.
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Project milestones and public references behind the asset profile.
Original 169 MW simple-cycle Tracy Peaker Plant certified by the California Energy Commission.
Monthly generation is reported through EIA-923. Capacity factor uses the current EIA nameplate capacity and is shown only for complete calendar years.
| Largest reported plants | Capacity | State | |
|---|---|---|---|
| Tracy Combined Cycle Power PlantCurrent | 336.1 MW | CA | |
| Henrietta Peaker | 98 MW | CA | |
| Hanford Energy Park Peaker | 92.2 MW | CA |
Portfolio membership follows the latest EIA-860 reporting entity. It does not imply ultimate ownership.
View full reporting portfolioEIA-860 lists generator TPP1, generator TPP2 with this operating date.
California Energy Commission certified the Tracy Combined-Cycle project (docket 08-AFC-07). The license allowed GWF Energy to modify the existing 169 MW simple-cycle peaker to combined-cycle operation.
California Energy Commission adoption order (Order No. 10-0324-01) approved conversion of the peaker with an additional 145 MW generation increase, for a stated combined total of 314 MW.
EIA-860 lists generator TCC1 with this operating date.
Converted combined-cycle configuration of the facility began commercial operation.
California Energy Commission approved transfer of operational control from GWF Energy, LLC to Star West Generation Management Company.
California Energy Commission approved ownership transfer from GWF Energy, LLC to AltaGas San Joaquin Energy Inc., and operational control transfer from Star West Generation Management Company to AltaGas Tracy Operations Inc.
California Energy Commission approved change of operational control from AltaGas Tracy Operations Inc. to MRP San Joaquin Energy LLC.
PG&E offtake agreement originally scheduled to expire in 2022 was renegotiated and extended through 2026 for Tracy, Hanford, Malaga, and Panoche.
MRP Buyer, LLC entered into an equity purchase agreement with MRP Golden, LLC to acquire 100% of the equity interests in MRP Golden Development Finance Holdings, LLC, the indirect upstream owner of MRP San Joaquin Energy LLC.
Upstream equity transaction closed. MRP Buyer, LLC acquired 100% of the equity interests in MRP Golden Development Finance Holdings, LLC. The transaction did not change the direct owner or operational control of the facility.
Answered from the published record above. Questions whose inputs this profile does not carry are omitted rather than estimated.
Tracy Combined Cycle Power Plant reports 336.1 MW natural gas of operating nameplate capacity. These technology ratings do not establish a common export limit. Source: EIA Aug 2026.
Tracy Combined Cycle Power Plant is a Natural Gas Fired Combined Cycle facility in San Joaquin County, CA, participating in the CAISO market.
Tracy Combined Cycle Power Plant is in San Joaquin County, CA, inside the CAISO balancing area.
Tracy Combined Cycle Power Plant is operated by MRP San Joaquin Energy LLC. according to the EIA generator inventory. Reporting membership does not by itself establish ultimate ownership.
Tracy Combined Cycle Power Plant reported 669.1 GWh over the twelve months to 2026-07. Figures are net generation as filed to EIA-923.
By capacity, Tracy Combined Cycle Power Plant ranks #344 of 540 operating plants of the same technology nationally. It ranks #26 of 64 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.