Bromley Battery Storage — Plant Summary
- EIA Plant ID
- 67305
- Capacity
- 11.8 MW
- Primary Fuel
- Battery Storage
- Technology
- Batteries
- Status
- Operating
- Location
- Adams, CO
- Operating Since
- 2024
- Generators
- 1
- Operator
- United Power, Inc
- Parent Company
- Ameresco
- Annual Generation
- -865 MWh
- Capacity Factor
- -0.8%
- Balancing Authority
- Western Area Power Administration - Rocky Mountain Region
- ISO/RTO
- —
- NERC Region
- WECC
Bromley Battery Storage
OperatingBESS
Ranked #8 of 15 BESS plants in CO#506 of 837 nationally
11.8 MW BESS operating in Adams, CO — Western Area Power Administration - Rocky Mountain Region
EIA
11.8 MW
Nameplate Capacity
1
Generators
unit
Batteries
Technology
2024
Operating Since
Location
Coordinates
35.2377, -91.6877
County
Adams, CO
Nearby Plants
- Searcy Solar HybridBESS110 MW · 0.6 km
- Searcy Water ISolar1 MW · 4.0 km
- Searcy Water IISolar2.8 MW · 4.6 km
Ownership & Operator
| Field | EIA | GEM | Wikidata |
|---|---|---|---|
| Operator | United Power, Inc | Ameresco | — |
| Owner(s) | Ameresco | Ameresco | — |
| Status | Operating | — | — |
Ownership Chain
About
Bromley Battery Storage is a battery energy storage system (BESS) located in Adams County, Colorado. The plant has a total capacity of 11.8 MW and began operating in 2024. It is owned by Ameresco and operated by United Power, Inc. The facility utilizes batteries as its primary fuel source, specifically lithium-ion batteries (LIB), and has a total storage capacity of 47 MWh, providing a duration of approximately 3.98 hours.
The plant consists of a single generator and operates within the Western Electricity Coordinating Council (WECC) NERC region. Its balancing authority is the Western Area Power Administration - Rocky Mountain Region. Bromley Battery Storage is ranked as the 9th largest of 18 battery storage facilities in Colorado and 727th nationally out of 1205 such facilities.
Generated from EIA, GEM, and public data sources
Engineering & Generators
Grid Context
NERC Region
WECC
Balancing Authority
Western Area Power Administration - Rocky Mountain Region
Grid Voltage
13.2 kV
Regulatory Status
RE
Entity Type
Cooperative
Sector
Electric Utility
Generation
−105 MWh
Net Charging
-865 MWh
Annual Net Energy
-0.8%
Capacity Factor
Positive values indicate net discharge (generation exceeds station load). Negative values indicate net charging. Pure battery storage plants are typically net negative due to round-trip efficiency losses.
Financial Data
No financial data available for this plant.
Pricing & Market Data
This plant is outside organized wholesale electricity markets (ISOs/RTOs). Nodal pricing data is not available.
News & Articles (10)Beta
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Last updated 2026-03-21
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