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12.5 MW Wood Waste out of service in Madera, CA — California Independent System Operator
12.5 MW
Nameplate Capacity
1
Generators
unit
Wood/Wood Waste Biomass
Technology
2008
Operating Since
Coordinates
37.1067, -120.2485
County
Madera, CA
Nearby Plants
| Field | EIA | GEM | Wikidata |
|---|---|---|---|
| Operator | Ampersand Chowchilla Biomass LLC | — | — |
| Owner(s) | Ampersand Chowchilla Biomass LLC | — | — |
| Status | Out of service | — | — |
Ampersand Chowchilla Biomass LLC is a 12.5 MW biomass power plant located in Madera County, California. The plant began operating in 2008 and utilizes wood and wood waste as its primary fuel source. It consists of a single generator. The plant is owned and operated by Ampersand Chowchilla Biomass LLC.
The facility operates within the California Independent System Operator (CAISO) balancing authority and the Western Electricity Coordinating Council (WECC) NERC region. Ampersand Chowchilla Biomass is ranked as the 20th largest biomass plant in California out of 25, and 75th nationally out of 97 similar facilities. Regulatory issues have been a focus of news coverage related to the plant.
Generated from EIA, GEM, and public data sources
ISO/RTO
CAISO
Market
ISO/RTO Member
NERC Region
WECC — Western Electricity Coordinating Council
Balancing Authority
0 MWh
Latest Month
0 MWh
Annual Generation
0.0%
Capacity Factor
CO₂ Intensity
8 lb/MWh
NOx
2 lb/MWh
SO₂
2013
$3,495/kW
Est. Construction Cost
Total estimated cost: $43.7M
Market Position
ISO/RTO Market
CAISO
LMP Node
NP15
Pricing Hub
TH_ZP26_GEN-APND
Node Source
EIA-860 direct report
Last updated 2026-03-26
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ask pi about Ampersand Chowchilla Biomass LLCCalifornia Independent System Operator (CISO)
Grid Voltage
120.0 kV
Regulatory Status
NR — Non-Regulated
Entity Type
Independent Power Producer
Sector
IPP Non-CHP
0.642 lb/MWh
CH₄
2 lb/MWh
N₂O
0.237 lb/MWh
Capacity Factor
9.6%
Annual Net Gen
11 GWh
CO₂eq
122 lb/MWh
Subregion
WECC California