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4.2 MW Batteries (1 MW) + Solar Photovoltaic (3 MW) operating in Benton, WA — Bonneville Power Administration
4.2 MW
Nameplate Capacity
2
Generators
units
Hybrid (2)
Technology
Batteries + Solar Photovoltaic
2020
Operating Since
Coordinates
46.3575, -119.3201
County
Benton, WA
Nearby Plants
| Field | EIA | GEM | Wikidata |
|---|---|---|---|
| Operator | Energy Northwest | Energy Northwest | — |
| Owner(s) | Energy Northwest, Tucci Energy Services | Tucci Energy Services | — |
| Status | Operating | operating | — |
GEM identifies the owner as Tucci Energy Services
This entity is not yet in the GEM ownership database — chain unavailable.
Horn Rapids Solar, Storage and Training is a hybrid power plant located in Benton County, Washington. The facility, owned and operated by Energy Northwest, commenced operations in 2020. It has a total capacity of 4.2 MW and consists of two generators utilizing both solar photovoltaic and battery storage technologies. The plant's battery energy storage system (BESS) has a capacity of 4 MWh, providing 4 hours of duration and employing lithium-ion battery chemistry (LIB). The solar array uses a fixed-tilt tracking system.
In its most recent year of operation, Horn Rapids generated 5,194 MWh of electricity, achieving a capacity factor of 14.1%. The plant operates within the Bonneville Power Administration balancing authority and the Western Electricity Coordinating Council (WECC) NERC region. In terms of size, Horn Rapids ranks as the 8th largest of 10 solar plants in Washington and 1020th out of 1205 nationally. The plant's primary fuel type is listed as 'MWH' in the EIA data, reflecting its reliance on solar energy.
Generated from EIA, GEM, and public data sources
Grid Region
Pacific Northwest
Market
WEIM Participant
NERC Region
WECC — Western Electricity Coordinating Council
Balancing Authority
Bonneville Power Administration (BPAT)
Grid Voltage
72.0 kV
Regulatory Status
RE — Regulated
Entity Type
State
Sector
Electric Utility
67 MWh
Latest Month
5.2K MWh
Annual Generation
14.1%
Capacity Factor
Data from 2021–2024
$32.8/MWh
Energy Value
$7.8/MWh
Capacity Value
This plant's balancing authority participates in CAISO's Western Energy Imbalance Market (WEIM). Direct nodal pricing data is not yet available.
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