Wadham Energy LP — Plant Summary
- EIA Plant ID
- 50293
- Capacity
- 29.1 MW
- Primary Fuel
- AB
- Technology
- Other Waste Biomass
- Status
- Operating
- Location
- Colusa, CA
- Operating Since
- 1989
- Generators
- 1
- Operator
- Wadham Energy Ltd Partners
- Parent Company
- —
- Annual Generation
- 131,970 MWh
- Capacity Factor
- 51.6%
- Balancing Authority
- California Independent System Operator
- ISO/RTO
- CAISO
- NERC Region
- WECC
Wadham Energy LP
OperatingAg. Byproduct
Ranked #1 of 3 Ag. Byproduct plants in CA#3 of 11 nationally
29.1 MW Ag. Byproduct operating in Colusa, CA — California Independent System Operator
EIAWD
29.1 MW
Nameplate Capacity
1
Generators
unit
Other Waste Biomass
Technology
1989
Operating Since
Location
Coordinates
39.1067, -122.1098
County
Colusa, CA
Nearby Plants
- Abel Road BioenergyAg. Byproduct4 MW · 4.4 km
Ownership & Operator
| Field | EIA | GEM | Wikidata |
|---|---|---|---|
| Operator | Wadham Energy Ltd Partners | — | — |
| Owner(s) | Wadham Energy Ltd Partners | — | — |
| Status | Operating | — | — |
Ownership Chain
No GEM tracker match for this plant — ownership chain unavailable.
About
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
Engineering & Generators
Grid Context
NERC Region
WECC
Balancing Authority
California Independent System Operator
Grid Voltage
60 kV
Regulatory Status
NR
Entity Type
Independent Power Producer
Sector
IPP Non-CHP
Generation
17.4K MWh
Latest Month
132.0K MWh
Annual Generation
51.6%
Capacity Factor
Jan 2022 – Dec 2024
Financial Data
No financial data available for this plant.
Pricing & Market Data
HIGH confidenceMarket Position
ISO/RTO Market
CAISO
LMP Node
WADHAM _7_B1
Pricing Hub
TH_NP15_GEN-APND
Node Source
EIA-860 direct report
News & Articles (10)Beta
General
Enpower sells 27 MW biomass power plant
Wadham Energy Limited Partnership owns and operates a 27 MW rice husk biomass-fueled energy facility in Colusa County, California. January 14, 2026.
Biomass Magazine·2 months ago
General
Enpower sells 27 MW biomass power plant
Wadham Energy Limited Partnership owns and operates a 27 MW rice husk biomass-fueled energy facility in Colusa County, California. January 14, 2026.
Biomass Magazine·2 months ago
Deals·m and a
Enpower sells 27 MW biomass power plant
Wadham Energy Limited Partnership owns and operates a 27 MW rice husk biomass-fueled energy facility in Colusa County, California. January 14, 2026.
Enpower (seller)Wadham Energy Limited Partnership (buyer)
Biomass Magazine·2 months ago
General
Enpower sells 27 MW biomass power plant
Wadham Energy Limited Partnership owns and operates a 27 MW rice husk biomass-fueled energy facility in Colusa County, California. January 14, 2026.
Biomass Magazine·2 months ago
Last updated 2026-03-26
View all 10 articles