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11.3 MW Hydro operating in Mono, CA — California Independent System Operator
11.3 MW
Nameplate Capacity
1
Generators
unit
Conventional Hydroelectric
Technology
1924
Operating Since
Coordinates
37.9442, -119.2161
County
Mono, CA
Nearby Plants
| Field | EIA | GEM | Wikidata |
|---|---|---|---|
| Operator | Southern California Edison Co | Southern California Edison | — |
| Owner(s) | Southern California Edison Co | Edison International | — |
| Status | Operating | — | — |
The Poole hydroelectric plant is located in Mono County, California. It is owned by Edison International and operated by Southern California Edison Co. The plant has a total capacity of 11.3 MW from a single generator using conventional hydroelectric technology. Poole began operating in 1924 and is connected to the California Independent System Operator (CAISO) balancing authority within the Western Electricity Coordinating Council (WECC) NERC region.
In the latest year of reported generation, Poole produced 22,849 MWh of electricity, achieving a capacity factor of 23.1%. According to available data, the installed cost of the plant was $2,625.89 per kW. Poole ranks as the 115th largest power plant in California out of 247, and 637th nationally out of 1464 plants.
Generated from EIA, GEM, and public data sources
ISO/RTO
CAISO
Market
ISO/RTO Member
NERC Region
WECC — Western Electricity Coordinating Council
Balancing Authority
926 MWh
Latest Month
22.8K MWh
Annual Generation
23.1%
Capacity Factor
Energy storage · Southern California Edison Company · Data from 2015–2024
$2,626/kW
Installed Cost
$52.2/MWh
Operating Cost
Annual Capital & Operating Expenses
Cumulative Installed Cost
Per-Unit Cost Trends
Market Position
ISO/RTO Market
CAISO
LMP Node
—
Pricing Hub
TH_NP15_GEN-APND
Node Source
OSM spatial match
Last updated 2026-03-26
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ask pi about PooleCalifornia Independent System Operator (CISO)
Grid Voltage
12.0 kV
Regulatory Status
RE — Regulated
Entity Type
Investor-Owned Utility
Sector
Electric Utility