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29.1 MW Ag. Byproduct operating in Colusa, CA — California Independent System Operator
29.1 MW
Nameplate Capacity
1
Generators
unit
Other Waste Biomass
Technology
1989
Operating Since
Coordinates
39.1067, -122.1098
County
Colusa, CA
Nearby Plants
| Field | EIA | GEM | Wikidata |
|---|---|---|---|
| Operator | Wadham Energy Ltd Partners | — | — |
| Owner(s) | Wadham Energy Ltd Partners | — | — |
| Status | Operating | — | — |
Wadham Energy LP is a 29.1 MW biomass power plant located in Colusa County, California. The plant began operating in 1989 and is owned and operated by Wadham Energy Ltd Partners. The primary fuel source is agricultural biomass waste ("AB"), and the plant utilizes "Other Waste Biomass" technology. Wadham Energy LP operates within the California Independent System Operator (CAISO) balancing authority and the Western Electricity Coordinating Council (WECC) NERC region.
The plant's latest annual generation was 131,970 MWh, achieving a capacity factor of 51.6%. Wadham Energy LP is ranked as the largest of three biomass plants in California and the third largest of ten such plants nationally. The plant has been the subject of at least one news article related to business deals.
Generated from EIA, GEM, and public data sources
ISO/RTO
CAISO
Market
ISO/RTO Member
NERC Region
WECC — Western Electricity Coordinating Council
Balancing Authority
17.4K MWh
Latest Month
132.0K MWh
Annual Generation
51.6%
Capacity Factor
CO₂ Intensity
22 lb/MWh
NOx
2 lb/MWh
SO₂
Market Position
ISO/RTO Market
CAISO
LMP Node
WADHAM _7_B1
Pricing Hub
TH_NP15_GEN-APND
Node Source
EIA-860 direct report
Last updated 2026-03-26
View all articlesNo ask pi reports yet for this entity.
ask pi about Wadham Energy LPCalifornia Independent System Operator (CISO)
Grid Voltage
60.0 kV
Regulatory Status
NR — Non-Regulated
Entity Type
Independent Power Producer
Sector
IPP Non-CHP
0.377 lb/MWh
CH₄
1 lb/MWh
N₂O
0.139 lb/MWh
Capacity Factor
29.2%
Annual Net Gen
74 GWh
CO₂eq
88 lb/MWh
Subregion
WECC California