Lockhart Solar PV
Terra-Gen, LLCSan Bernardino County
Lockhart Solar arrays at the project site.
Source: Cupertino ElectricLockhart Solar PV, LLC is a solar photovoltaic generation facility with co-located lithium-ion battery energy storage located at 43880 Harper Lake Road, Hinkley, San Bernardino County, California. The facility occupies approximately 1,073 acres on the site of the former SEGS VIII solar-thermal plant, which Terra-Gen converted to photovoltaic generation. The solar generator, identified as LOC1 in EIA/FERC records and marketed as Lockhart I by Terra-Gen, reached commercial operations in 2023 with a nameplate capacity of 100.4 MW (85 MW marketed by the developer). A 69 MW lithium-ion battery storage unit, identified as LHC1 in EIA/FERC records and part of the Lockhart CL I battery expansion, reached commercial operations in January 2026 with 69 MWh of energy capacity. The solar resource is identified in CAISO systems as LCKHT1_2_LH1SR1, and the battery resource as LCKHT1_2_LSCBT1. Terra-Gen, LLC, which is jointly owned by Masdar and Igneo Infrastructure Partners, owns and develops the asset. The facility's battery capacity is fully contracted under 15-year resource-adequacy agreements with Pacific Gas and Electric Company.
Mapped infrastructure geometry associated with this asset.
EIA plant 10444 · Inventory for Aug 2026.
| Generator | Technology | Status | Power (MW) | Energy (MWh) |
|---|---|---|---|---|
| LHC1 | Batteries | Operating | 69 | 69 |
| LOC1 | Solar Photovoltaic | Operating | 100.4 | Unknown |
| GEN1 | Solar Thermal without Energy Storage | Retired | 92 | Unknown |
Similar plants ranked by technology, capacity, and distance.
Operating generator records and technology attributes reported through EIA-860.
| Generator | Capacity | Technology | Operation | Status |
|---|---|---|---|---|
| GEN1 | 92 MW 80 MW summer | Solar Thermal without Energy Storage Solar · ST | Dec 1989 Retirement: Oct 2021 | Operating |
| LHC1 | 69 MW 69 MW summer | Batteries Electricity used for energy storage · BA | Nov 2025 | Operating |
| LOC1 | 100.4 MW 85 MW summer | Solar Photovoltaic Solar · PV | Jul 2023 | 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.
Drag organizations to explore the network. Select a node to pin its details and available page link.
Project milestones and public references behind the asset profile.
EIA-860 lists generator GEN1 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 | |
|---|---|---|---|
| Lockhart Solar PV, LLCCurrent | 169.4 MW | CA | |
| Lockhart Solar PV II | 144.1 MW | CA | |
| Desert Breeze Solar, LLC | 125 MW | CA | |
| Lockhart Solar PV IV, LLC | 80 MW | CA | |
| Lockhart ESS, LLC | 45 MW | CA |
Portfolio membership follows the latest EIA-860 reporting entity. It does not imply ultimate ownership.
View full reporting portfolioThe 80 MW SEGS VIII solar-thermal facility was certified by the California Energy Commission on March 29, 1989 and began commercial operation on December 1, 1989, on the site now occupied by Lockhart Solar PV, LLC.
The California Energy Commission recorded an administrative name change of the SEGS VIII operator from FPL Energy Operating Services to NextEra Energy Operating Services.
Subsidiaries of Terra-Gen acquired the remaining 50% equity interest in SEGS VIII from affiliates of NextEra Energy Resources, resulting in Terra-Gen indirectly owning 100% of the project.
The California Energy Commission approved transfer of ownership of the SEGS VIII project from Luz Partners Ltd., VIII to Terra-Gen, LLC. The order was docketed on September 24, 2018 as Order No. 18-0921-01d.
EIA-860 lists a planned retirement for generator GEN1.
The California Energy Commission approved termination of the SEGS VIII certification and jurisdiction over the project site following completion of the decommissioning plan. This retired the predecessor thermal facility and cleared the site for photovoltaic redevelopment.
EIA-860 lists generator LOC1 with this operating date.
EIA-860 lists generator LHC1 with this operating date.
Terra-Gen announced commercial operations for the combined Lockhart CL I (69 MW) and Lockhart CL II (59.7 MW) battery energy storage project. CL I is the resource identified as LHC1 under EIA plant code 10444.
Answered from the published record above. Questions whose inputs this profile does not carry are omitted rather than estimated.
Lockhart Solar PV reports 69 MW battery storage + 100.4 MW solar of operating nameplate capacity. These technology ratings do not establish a common export limit. Source: EIA Aug 2026.
Lockhart Solar PV is a Batteries, Solar Photovoltaic facility in San Bernardino County, CA, participating in the CAISO market.
Lockhart Solar PV is in San Bernardino County, CA, inside the CAISO balancing area.
Lockhart Solar PV is operated by Terra-Gen Operating Co-Solar according to the EIA generator inventory. Reporting membership does not by itself establish ultimate ownership.
Lockhart Solar PV reported 236.1 GWh over the twelve months to 2026-07. Figures are net generation as filed to EIA-923.
By capacity, Lockhart Solar PV ranks #475 of 7,597 operating plants of the same technology nationally. It ranks #86 of 972 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.