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10.8 MW Hydro operating in Fresno, CA — California Independent System Operator
10.8 MW
Nameplate Capacity
1
Generators
unit
Conventional Hydroelectric
Technology
1956
Operating Since
Coordinates
37.2570, -119.1590
County
Fresno, 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 Portal hydroelectric plant is located in Fresno County, California. The plant has a total capacity of 10.8 MW from a single generator using conventional hydroelectric technology. It began operating in 1956 and is owned by Edison International, with Southern California Edison Co. as the operator. Portal is ranked 117th out of 247 power plants in California and 641st nationally out of 1464 plants.
Portal 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 18,737 MWh, resulting in a capacity factor of 19.7%. Financial data indicates an installed cost of $1506.25 per kW.
Generated from EIA, GEM, and public data sources
ISO/RTO
CAISO
Market
ISO/RTO Member
NERC Region
WECC — Western Electricity Coordinating Council
Balancing Authority
California Independent System Operator (CISO)
Grid Voltage
33.0 kV
Regulatory Status
RE — Regulated
Entity Type
Investor-Owned Utility
Sector
Electric Utility
585 MWh
Latest Month
18.7K MWh
Annual Generation
19.7%
Capacity Factor
Energy storage · Southern California Edison Company · Data from 2015–2024
$1,566/kW
Installed Cost
$27.3/MWh
Operating Cost
Annual Capital & Operating Expenses
Cumulative Installed Cost
Per-Unit Cost Trends
Market Position
ISO/RTO Market
CAISO
LMP Node
BIGCRK1_7_B2
Pricing Hub
TH_ZP26_GEN-APND
Location Type
Pricing Node
Node Source
Curated node match
Last updated 2026-03-26
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