Ampersand Chowchilla Biomass LLCOut of service
Madera County, California · EIA plant ID 56706 · Operator: Ampersand Chowchilla Biomass LLC
Nameplate13MWSummer 11 MW
Generators1in service
Net generation0GWh12 mo to Dec 2025
Capacity factor0%other units, summer MW
Heat rate—Btu/kWhfossil units, electric fuel, HHV
First online2008
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), other 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) |
|---|---|---|---|
| 2008 | 20.6 | 33.3% | — |
| 2009 | 51.8 | 56.3% | — |
| 2010 | 16.8 | 18.3% | — |
| 2011 | 31.9 | 34.7% | — |
| 2012 | 59.1 | 64.1% | — |
| 2013 | 69 | 72.9% | 20,565 |
| 2014 | 71.8 | 75.9% | 21,075 |
| 2015 | 66 | 69.7% | 21,082 |
| 2016 | 68.9 | 72.6% | 20,353 |
| 2017 | 70.1 | 74.0% | 19,097 |
| 2018 | 67.2 | 73.0% | 17,092 |
| 2019 | 71.7 | 77.9% | 20,543 |
| 2020 | 62 | 67.2% | 20,579 |
| 2021 | 60.2 | 65.4% | 22,167 |
| 2022 | 53.3 | 57.9% | 22,898 |
| 2023 | 10.5 | 11.4% | 25,156 |
| 2024 | 0 | 0.0% | — |
| 2025 | 0 | 0.0% | — |
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 |
|---|---|---|---|---|---|---|---|---|
| AMPC | Wood/Wood Waste Biomass | ST | 12.5 | 10.5 | May 2008 | Operating (Out of service) | — | coming soon |
Owner / operator
Operator: Ampersand Chowchilla Biomass LLC. Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
| Ampersand Chowchilla Biomass LLC | 100.0% | 13 MW |
Nearby plants
Within 80 km.
| Chowchilla II | 50 MW | 0.1 km |
| Five H Farms Solar Array | 1 MW | 4.2 km |
| Avenue 26 Solar | 8 MW | 6.5 km |
| Adera Solar | 20 MW | 6.9 km |
| DGS Valley State Prison | 2 MW | 8.5 km |
| DGS Central California Womens Facility | 2 MW | 8.9 km |