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199.9 MW Solar operating in Imperial, CA — California Independent System Operator
199.9 MW
Nameplate Capacity
3
Generators
units
Solar Photovoltaic
Technology
2013
Operating Since
Coordinates
32.6711, -115.5873
County
Imperial, CA
Nearby Plants
| Field | EIA | GEM | Wikidata |
|---|---|---|---|
| Operator | Imperial Valley Solar, LLC | — | — |
| Owner(s) | Imperial Valley Solar, LLC | — | — |
| Status | Operating | cancelled | — |
Mount Signal Solar, also known as Imperial Valley Solar Project, is a 794 MWp (614 MWAC) photovoltaic power station west of Calexico, California, United States, in the southern Imperial Valley, near the Mexican border. The facility was developed and constructed by 8minutenergy Renewables in three phases, with two completed as of 2018, and the third in 2020. It is one of the world's largest PV solar farms with a capacity of about 800 MWp (600 MWAC). The project has been supported by several environmental groups, as the power station was built on low-productivity farmland.
Read more on WikipediaImperial Valley Solar, LLC is a 199.9 MW solar photovoltaic power plant located in Imperial County, California. The plant, which began operating in 2013, is owned and operated by Imperial Valley Solar, LLC. It utilizes single-axis tracking technology. As of the most recent data, the plant generated 443,543 MWh annually, achieving a capacity factor of 25.2%.
The facility consists of 3 generators and operates within the California Independent System Operator (CAISO) balancing authority, part of the Western Electricity Coordinating Council (WECC) NERC region. Imperial Valley Solar is the 24th largest solar plant in California (out of 59) and the 266th largest in the United States (out of 639). Financial data indicates a power purchase agreement (PPA) price of $99.16 per MWh.
Generated from EIA, GEM, and public data sources
ISO/RTO
CAISO
Market
ISO/RTO Member
NERC Region
WECC — Western Electricity Coordinating Council
Balancing Authority
23.4K MWh
Latest Month
443.5K MWh
Annual Generation
25.2%
Capacity Factor
Data from 2014–2024
$11.2/MWh
Energy Value
$9.1/MWh
Capacity Value
Market Position
ISO/RTO Market
CAISO
LMP Node
WNSTRGN1_7_N001
Pricing Hub
TH_SP15_GEN-APND
Location Type
Pricing Node
Node Source
Curated node match
Last updated 2026-03-26
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ask pi about Imperial Valley Solar, LLCCalifornia Independent System Operator (CISO)
Grid Voltage
230.0 kV
Regulatory Status
NR — Non-Regulated
Entity Type
Independent Power Producer
Sector
IPP Non-CHP