Imperial County · CAISO
Mount Signal Solar Farm II is a solar power facility with 153.5 MW of EIA-reported operating capacity in Imperial County, California, registered as EIA Plant ID 61353. Project filings list 500,000 solar panels for the facility. US Solar Fund acquired a 25% interest in the plant from New Energy Solar Fund in March 2021.
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EIA-reported operating capacity; nameplate, seasonal, AC/DC, and unit ratings may differ.
Primary generation technology.
Imperial County · CAISO
Mount Signal Solar Farm II is operating.
Installed equipment documented in public project records.
Solar Photovoltaic
Mount Signal Solar Farm II is operating.
CAISO
CAISO · Imperial County
Operating generator records and technology attributes reported through EIA-860.
| Generator | Capacity | Technology | Operation | Status |
|---|---|---|---|---|
| IVS2 | 153.5 MW 153.5 MW summer | Solar Photovoltaic Solar · PV | Jan 2020 | Operating |
Monthly EIA generation history and recent market-resource behavior where linked telemetry is available.
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Source-backed project transactions, agreements, land records, permits, and environmental disclosures. Portfolio and adjacent-project facts remain explicitly scoped.
Parties, market resources, and identifiers tied to this asset, with owner, operator, developer, EPC, compliance provider, and interconnecting entity roles kept separate.
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Project milestones and public references behind the asset profile.
EIA-860 lists generator IVS2 with this operating date.
Monthly generation is reported through EIA-923. Capacity factor uses the current EIA nameplate capacity and is shown only for complete calendar years.
| Largest reported plants | Capacity | State | |
|---|---|---|---|
| Slate Hybrid | 440.3 MW | CA | |
| RE Mustang LLC | 175 MW | CA | |
| Mount Signal Solar Farm IICurrent | 153.5 MW | CA | |
| Hudson - High Desert Hybrid | 150 MW | CA | |
| American Beech Solar LLC | 140 MW | NC | |
| Prairie Solar LLC | 135 MW | IL | |
| American Kings Solar, LLC | 128 MW | CA | |
| Long Point Solar | 120 MW | TX |
Portfolio membership follows the latest EIA-860 reporting entity. It does not imply ultimate ownership.
View full reporting portfolioA 20-year power-purchase agreement with Southern California Edison commenced; the project sells 100% of its generated electricity under the agreement.
US Solar Fund (USF) acquired a 25% interest in Mount Signal 2 from New Energy Solar Fund (NEW) in March 2021 and exercised an option to acquire a further 25% interest in February 2022.
MN8 exercised the purchase option; USF subsequently signed a binding sale agreement in April 2023.
MN8 Energy completed acquisition of US Solar Fund's 50% interest in Mount Signal 2 for total proceeds of approximately $52.2 million on June 26, 2023.
Answered from the published record above. Questions whose inputs this profile does not carry are omitted rather than estimated.
Mount Signal Solar Farm II has a reported capacity of 153.5 MW. Source: EIA Form 860.
Mount Signal Solar Farm II is a Solar Photovoltaic facility in Imperial County, CA, participating in the CAISO market.
Mount Signal Solar Farm II is in Imperial County, CA, inside the CAISO balancing area.
Mount Signal Solar Farm II is operated by MN8 Energy LLC according to the EIA generator inventory. Reporting membership does not by itself establish ultimate ownership.
Mount Signal Solar Farm II reported 380.7 GWh over the twelve months to 2026-04. Figures are net generation as filed to EIA-923.
Mount Signal Solar Farm II interconnects at Imperial Valley 230 kV Switchyard.
By capacity, Mount Signal Solar Farm II ranks #258 of 7,234 operating plants of the same technology nationally. It ranks #46 of 939 in CA.
Plants within 25 km, nearest first, regardless of technology. Proximity is straight-line distance between mapped plant coordinates; it does not by itself establish a shared point of interconnection.
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