Mount Signal Solar Farm V is a solar power facility with 252.3 MW of EIA-reported operating capacity in Imperial County, California, registered as EIA Plant ID 61202. Project filings list 2,800,000 solar panels and 96 inverters for the facility.
EIA-reported operating capacity; nameplate, seasonal, AC/DC, and unit ratings may differ.
Primary generation technology.
Imperial County · CAISO
Mount Signal Solar Farm V is operating.
230 kV · San Diego Gas & Electric (SDG&E)
Installed equipment documented in public project records.
Solar Photovoltaic
Mount Signal Solar Farm V is operating.
230 kV · San Diego Gas & Electric (SDG&E)
CAISO
Similar plants ranked by technology, capacity, and distance.
Operating generator records and technology attributes reported through EIA-860.
| Generator | Capacity | Technology | Operation | Status |
|---|---|---|---|---|
| MTSG3 | 252.3 MW 252.3 MW summer | Solar Photovoltaic Solar · PV | Nov 2018 | Operating |
Monthly EIA generation history and recent market-resource behavior where linked telemetry is available.
Deterministic links to ERCOT market resources, price records, outage disclosures, queue records, and nearby infrastructure. Candidate joins remain labeled until corroborated.
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.
8minutenergy began developing Mount Signal 3.
CAISO · Imperial County
Monthly generation is reported through EIA-923. Capacity factor uses the current EIA nameplate capacity and is shown only for complete calendar years.
Portfolio membership follows the latest EIA-860 reporting entity. It does not imply ultimate ownership.
Southern California Edison and 8minutenergy signed a long-term power-purchase agreement for the project's renewable output.
8minutenergy had completed procurement and construction contracts; Mortenson Construction was appointed as engineering, procurement, and construction contractor, with construction planned for completion by the end of 2018.
Capital Dynamics announced the acquisition of Mount Signal 3's equity interests from 8minutenergy. The transaction consideration was not disclosed, and 8minutenergy remained the project developer.
Capital Dynamics announced financial close on the project. The financing included an institutional note, tax equity, construction-financing roles, and letters of credit.
EIA-860 lists generator MTSG3 with this operating date.
Answered from the published record above. Questions whose inputs this profile does not carry are omitted rather than estimated.
Mount Signal Solar Farm V has a reported capacity of 252.3 MW. Source: EIA Form 860.
Mount Signal Solar Farm V is a Solar Photovoltaic facility in Imperial County, CA, participating in the CAISO market.
Mount Signal Solar Farm V is in Imperial County, CA, inside the CAISO balancing area.
Mount Signal Solar Farm V is operated by Imperial Valley Solar 3, LLC according to the EIA generator inventory. Reporting membership does not by itself establish ultimate ownership.
Mount Signal Solar Farm V reported 635 GWh over the twelve months to 2026-06. Figures are net generation as filed to EIA-923.
Mount Signal Solar Farm V interconnects at Mountain Signal 1 substation, on the San Diego Gas & Electric (SDG&E) system.
By capacity, Mount Signal Solar Farm V ranks #73 of 7,234 operating plants of the same technology nationally. It ranks #15 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.
