Mount Signal Solar Farm II
Imperial County
Overview
- Reported capacity
- 153.5 MW
- EIA-reported operating capacity; nameplate, seasonal, AC/DC, and unit ratings may differ.
- Technology
- Solar Photovoltaic
- Primary generation technology.
- Registry anchor
- Plant 61353
- Imperial County · CAISO
- Operating status
- Operating
- Mount Signal Solar Farm II is operating.
Infrastructure record
- Operator
- MN8 Energy LLC
- Mapped facility footprint
- Mapped infrastructure footprint
Mapped infrastructure geometry associated with this asset.
- In service
- 2020-01
Profile
- Grid role
- Utility-scale solar generation with 100% of output contracted to Southern California Edison under a 20-year power-purchase agreement.
- Context
- EIA-derived operating records rank Mount Signal Solar Farm II #475 nationally and #79 in California by capacity. The project is described in development materials as 200 MWdc, while EIA plant 61353 records one operational 153.5 MW solar-photovoltaic generating unit, IVS2, online January 1, 2020.
- Physical build
- Mount Signal Solar Farm II is a 200 MWdc ground-mounted photovoltaic project on approximately 1,200 acres in Imperial County. Swinerton Renewable Energy served as EPC; the build includes NEXTracker single-axis trackers, Power Electronics inverters, and approximately 500,000 First Solar modules.
- Financing
Structured profile
- Reported capacity
- 153.5 MW
Solar Photovoltaic
- Operating status
- operating
Mount Signal Solar Farm II is operating.
- Location
- Imperial County
CAISO
- Asset role
- solar
CAISO · Imperial County
Generation and physical site
EIA plant 61353 · Inventory for Sep 2026.
Reported operating nameplate by technology
- Solar
- 153.5 MW
Generator records (1)
| Generator | Technology | Status | Power (MW) | Energy (MWh) |
|---|---|---|---|---|
| IVS2 | Solar Photovoltaic | Operating | 153.5 | Unknown |
- Physical map location · OpenStreetMap
- 32.66216, -115.62958
- Filed location · EIA
- 32.66850, -115.62920
Sources and observation dates
Questions answered by the public record
Is Mount Signal 2 the same project as SDG&E’s Mount Signal 1 contract?
Mount Signal Solar Farm II is EIA plant 61353, a separate phase. US Solar Fund’s acquisition materials identify a 20-year Southern California Edison power purchase agreement for Mount Signal 2. SDG&E’s Mount Signal 1 agreement should not be assigned to this phase.
Related assets
Similar plants ranked by technology, capacity, and distance.
Units and generators
Current generator records and technology attributes reported through EIA-860.
| Generator | Capacity | Technology | Operation | Status |
|---|---|---|---|---|
| IVS2 | 153.5 MW 153.5 MW summer | Solar Photovoltaic PV | Jan 2020 | Operating |
Performance
Monthly EIA generation history and recent market-resource behavior where linked telemetry is available.
Peer context
- Technology capacity
- 153.5 MW
- Solar Photovoltaic
- National rank
- #275
- of 7,597 operating peers
- CA rank
- #46
- of 972 operating peers
Monthly generation
Download CSVLatest 12 months
358.5 GWh
Reported net generation
Latest report
Jul 2026
EIA-923 monthly filing
2025 capacity factor
29.9%
Using current reported nameplate capacity
Grid and market context
Deterministic links to ERCOT market resources, price records, outage disclosures, queue records, and nearby infrastructure. Candidate joins remain labeled until corroborated.
Market registration
CAISO resource registryCommercial, land, and environmental record
Source-backed project transactions, agreements, land records, permits, and environmental disclosures. Portfolio and adjacent-project facts remain explicitly scoped.
Transactions and agreements
Power Purchase Agreement Commencement
Jun 2020
Mount Signal 2 commenced a 20-year power purchase agreement with Southern California Edison in June 2020. Under the PPA, 100% of generated electricity is sold to SCE at an annually escalating price.
20 yearsImperial Valley Solar 2, LLC · Southern California Edison
Related parties and identifiers
Parties, market resources, and identifiers tied to this asset, with owner, operator, developer, EPC, compliance provider, and interconnecting entity roles kept separate.
Relationship graph
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AssetOwner / operatorContractorFinancierOfftakerRelated asset
Timeline and sources
Project milestones and public references behind the asset profile.
Project timeline
- Generator enters operationEIA-860
EIA-860 lists generator IVS2 with this operating date.