Midway Peaking LLC
Fresno County, California · EIA plant ID 56639 · Operator: Calpeak Operating Services, LLC
Nameplate140MWSummer 111 MW
Generators2in service
Net generation6GWh12 mo to Dec 2025
Capacity factor1%gas/coal/oil units, summer MW
Heat rate11,446Btu/kWhfossil units, electric fuel, HHV
First online2009Runs as rarely runs
Monthly net generation
EIA-923, all units at the plant. Net of station use; storage can go negative.
FinalPreliminary
Capacity factor by year
Net MWh ÷ (summer MW × hours), gas/coal/oil units. Each year uses that year's EIA-860 ratings; the hollow dot is the latest 12 months.
Heat rate by year
Electric fuel MMBtu × 1000 ÷ net MWh (Btu/kWh, HHV), fossil units only; CT + CA counted as one combined-cycle block.
Annual data table
| Year | Net GWh | Capacity factor | Heat rate (Btu/kWh) |
|---|---|---|---|
| 2009 | 27.6 | 4.6% | 10,897 |
| 2010 | 39.8 | 4.4% | 10,854 |
| 2011 | 74.2 | 8.2% | 10,800 |
| 2012 | 29.8 | 3.3% | 10,776 |
| 2013 | 40.9 | 4.5% | 10,906 |
| 2014 | 40.9 | 3.9% | 11,071 |
| 2015 | 85.6 | 8.8% | 10,931 |
| 2016 | 41.4 | 4.2% | 10,939 |
| 2017 | 66.7 | 6.9% | 10,894 |
| 2018 | 49.4 | 5.1% | 11,021 |
| 2019 | 51.1 | 5.3% | 11,400 |
| 2020 | 30.5 | 3.1% | 5,751 |
| 2021 | 23.8 | 2.5% | 11,549 |
| 2022 | 22.5 | 2.3% | 11,614 |
| 2023 | 20.3 | 2.1% | 11,093 |
| 2024 | 15.7 | 1.6% | 8,233 |
| 2025 | 6.5 | 0.7% | 11,446 |
Generators
EIA-860 (annual) with EIA-860M updates through Sep 2026. EIA-923 reports generation by plant, prime mover and fuel, not by unit, so unit-level output isn't shown.
| Gen ID | Technology | Prime mover | Nameplate MW | Summer MW | Online | Status | Planned retirement | OEM / model |
|---|---|---|---|---|---|---|---|---|
| 1 | Natural Gas Fired Combustion Turbine | GT | 69.9 | 55.6 | May 2009 | Operating | — | coming soon |
| 2 | Natural Gas Fired Combustion Turbine | GT | 69.9 | 55.6 | May 2009 | Operating | — | coming soon |
Owner / operator
Operator: Calpeak Operating Services, LLC. Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
| Midway Peaking LLC | 100.0% | 140 MW |
Nearby plants
Within 80 km.
| Panoche Peaker | 57 MW | 0.1 km |
| CalPeak Power Panoche Peaker Plant | 61 MW | 0.2 km |
| Midway BESS | — | 0.2 km |
| Iron BESS | — | 0.2 km |
| Panoche Energy Center | 432 MW | 0.4 km |
| Conflitti Solar | 4 MW | 3 km |