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ONeill — Power plant · Pumped hydro storage · U S Bureau of ReclamationGonzaga Ridge Wind Farm — Wind · CA · 34.6 MW · 8.1 km awayGonzaga Ridge Wind Farm — Wind · CA · 40.3 MW · 8.1 km awayGonzaga Ridge Wind Farm — Wind · CA · 57.9 MW · 8.1 km awayStellar Wright BESS — Storage · CA · 84.8 MW · 12.5 km awayGonzaga Ridge Battery Facility — Storage · CA · 51.8 MW · 13.4 km awayMerced BESS — Storage · CA · 3 MW · 19.4 km away
  • Wind & solar
  • Storage
  • Under construction
  • Operating
  • 10 · 100 · 1,000 MW

Power plant · Pumped hydro storage

Key facts

Power plant · Pumped hydro storage Operating
Capacity
Capacity: sourceEIA-860M · Open licenseMW
Commissioned
1967
Net generation, 2025
-65,854 MWh
Grid
72 kV to WAPA-- Western Area Power Administration (CISO)
Location
Merced County, California
Operated by
U S Bureau of ReclamationSourceEIA-860M Preliminary Monthly Electric Generator Inventory

Output

Net generation MWh by year, 2001 to 2026

Operations detail

Details

Who’s behind it

No companies named in filings yet.

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Technology
Pumped hydro storage source: “Hydroelectric Pumped Storage”
Age
59 years since 1967
All 4 attributes from EIA-860M Preliminary Monthly Electric Generator Inventory
Attributes
AttributeValue
Grid
Nerc region
WECC
Report year
2025
Grid voltage kv
72.50
Transmission owner
WAPA-- Western Area Power Administration
Balancing authority code
CISO
Balancing authority name
California Independent System Operator
Fuel burned (MMBtu), 20250
Net generation (MWh), 2025-65,854
Balancing authority codeCISO
Data notes (1)
  • Capacity factor, 2025 not shown: net generation -65854.0 MWh is not positive (the plant consumed at least as much as it produced over the year)

Timeline

  • In service · EIA-860M

Sources

3 sources

View at source

Around this plant

Nearby

within 25 km
Projects within 25 km, nearest first.
ProjectKindAwayMW
Gonzaga Ridge Wind Farm × 3 units Under construction Wind 8.1 km 132.8
Stellar Wright BESS Under construction Storage 12.5 km 84.8
Gonzaga Ridge Battery Facility Under construction Storage 13.4 km 51.8
Merced BESS Under construction Storage 19.4 km 3

Sources EIA-860M

Sources

Attribution