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2.2 MW Hydro operating in Walla Walla, WA — Bonneville Power Administration
2.2 MW
Nameplate Capacity
1
Generators
unit
Conventional Hydroelectric
Technology
1988
Operating Since
Coordinates
46.0883, -118.2547
County
Walla Walla, WA
Nearby Plants
| Field | EIA | GEM | Wikidata |
|---|---|---|---|
| Operator | City of Walla Walla - (WA) | — | — |
| Owner(s) | Walla Walla City of | — | — |
| Status | Operating | — | — |
Twin Reservoirs is a hydroelectric power plant located in Walla Walla County, Washington. The plant, owned and operated by the City of Walla Walla, has a total capacity of 2.2 MW. It began operating in 1988 and utilizes a single generator with conventional hydroelectric technology, using water as its primary fuel source.
The plant's latest annual generation was 7,321 MWh, resulting in a capacity factor of 37.8%. Twin Reservoirs operates within the Bonneville Power Administration balancing authority and the Western Electricity Coordinating Council (WECC) NERC region. In terms of size, the plant ranks 66th out of 75 power plants in Washington and 1185th out of 1464 plants nationally.
Generated from EIA, GEM, and public data sources
Grid Region
Pacific Northwest
Market
WEIM Participant
NERC Region
WECC — Western Electricity Coordinating Council
Balancing Authority
486 MWh
Latest Month
7.3K MWh
Annual Generation
37.8%
Capacity Factor
2013
$2,294/kW
Est. Construction Cost
Total estimated cost: $5.0M
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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ask pi about Twin ReservoirsBonneville Power Administration (BPAT)
Grid Voltage
14.4 kV
Regulatory Status
NR — Non-Regulated
Entity Type
Municipal
Sector
IPP Non-CHP