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Atwell Island

20.2 MW solar power plant · Tulare County, California

Operating capacity
20.2 MW
1 generator
Main fuel
Solar
First unit online
2013
Generation, 2023
33 GWh

Plant details

EIA plant ID
58366
Operator
SPS Atwell Island LLC
Sector
IPP Non-CHP
Balancing authority
CISO

Operating generators

Nameplate capacity and the month each began operating

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GeneratorFuelCapacityOnlineStatus
1Solar PhotovoltaicSolar20.2 MWMar 2013Operating

Generation and emissions, 2023

EPA eGRID annual data

Net generation
33 GWh
Capacity factor
18.9%

Nearby power plants

Within 25 miles

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PlantFuelCapacityDistance
White River SolarSolar20.0 MW3.2 mi
Alpaugh BESSBattery storage10.0 MW3.6 mi
Angela Solar ProjectBattery storage80.0 MW3.7 mi
Alpaugh NorthSolar20.0 MW3.8 mi
Alpaugh 50Solar50.0 MW4.2 mi
Atwell Island West SolarSolar20.0 MW6.2 mi
Tulare CSG LLCSolar3.0 MW6.6 mi
Case Vander Eyk, Jr Dairy SolarSolar1.2 MW8.5 mi

Frequently asked questions

How much power can Atwell Island produce?
Atwell Island has 20.2 MW of operating nameplate capacity across 1 generator as of August 2026.
Who operates Atwell Island?
EIA lists SPS Atwell Island LLC as the operator of Atwell Island.
How much electricity did Atwell Island generate?
Atwell Island reported 33 GWh of net generation in 2023, according to EPA eGRID.

Source: U.S. Energy Information Administration, Form EIA-860M (August 2026); U.S. EPA eGRID2023 · Data for August 2026