Menifee Power Bank
Calpine CorporationRiverside County
Menifee Power Bank, marketed by Calpine as Nova Power Bank, is a 680 MW / 2,720 MWh battery-storage facility in Menifee, Riverside County, California. Calpine’s project fact sheet names SDG&E, Southern California Edison, and Peninsula Clean Energy as users of the storage capacity. The facility’s SCE transmission connection and its customers’ storage contracts are separate relationships.
Mapped infrastructure geometry associated with this asset.
Batteries
4-hour storage duration
Menifee Power Bank is operating.
500 kV · Southern California Edison Company
EIA plant 66494 · Inventory for Sep 2026.
| Generator | Technology | Status | Power (MW) | Energy (MWh) |
|---|---|---|---|---|
| NOVA1 | Batteries | Operating | 230 | 920 |
| NOVA2 | Batteries | Operating | 230 | 920 |
| NOVA3 | Batteries | Operating | 50 | 200 |
| NOVA4 | Batteries | Operating | 110 | 440 |
| NOVA5 | Batteries | Operating | 60 |
Nova Power Bank is Calpine’s name for the battery project in Menifee. EIA plant 66494 is identified here as Menifee Power Bank. Calpine describes a 680 MW project supplying four-hour storage across multiple phases.
Calpine’s August 2024 fact sheet lists SDG&E alongside Southern California Edison and Peninsula Clean Energy as users of Nova’s storage capacity. The full 680 MW plant rating does not represent an allocation entirely to SDG&E.
Similar plants ranked by technology, capacity, and distance.
Current generator records and technology attributes reported through EIA-860.
| Generator | Capacity | Technology | Operation | Status |
|---|---|---|---|---|
| NOVA1 | 230 MW 230 MW summer | Batteries BA | Jun 2024 | Operating |
| NOVA2 | 230 MW 230 MW summer | Batteries BA | Jul 2024 | Operating |
| NOVA3 | 50 MW 50 MW summer | Batteries BA | Aug 2024 | Operating |
| NOVA4 | 110 MW 110 MW summer | Batteries BA | Sep 2024 | Operating |
| NOVA5 | 60 MW 60 MW summer |
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.
Construction of the Nova Power Bank began in August 2023 under Mortenson's EPC scope.
CAISO
CAISO · Riverside County
| 240 |
EIA-923 reports gross generation and net grid exchange for storage plants. Gross generation is shown as a discharge proxy; it is not a cycle count or conventional capacity factor.
Portfolio membership follows the latest EIA-860 reporting entity. It does not imply ultimate ownership.
EIA-860 lists generator NOVA1 with this operating date.
EIA-860 lists generator NOVA2 with this operating date.
Mortenson reports that the complete 680 MW project was finished in June 2025.
EIA-860 lists generator NOVA5 with this operating date.
Constellation completed its acquisition of Calpine in January 2026 and assumed the Nova Power credit agreement; this was a parent-company transaction rather than a separately reported sale of the Menifee asset.
Answered from the published record above. Questions whose inputs this profile does not carry are omitted rather than estimated.
Nova Power Bank is Calpine’s name for the battery project in Menifee. EIA plant 66494 is identified here as Menifee Power Bank. Calpine describes a 680 MW project supplying four-hour storage across multiple phases.
Calpine’s August 2024 fact sheet lists SDG&E alongside Southern California Edison and Peninsula Clean Energy as users of Nova’s storage capacity. The full 680 MW plant rating does not represent an allocation entirely to SDG&E.
Menifee Power Bank reports 680 MW battery storage of operating nameplate capacity. These technology ratings do not establish a common export limit. Source: EIA Sep 2026.
Menifee Power Bank is a batteries facility in Riverside County, CA, participating in the CAISO market.
Menifee Power Bank is in Riverside County, CA, inside the CAISO balancing area.
Menifee Power Bank is operated by Nova Power, LLC according to the EIA generator inventory. Reporting membership does not by itself establish ultimate ownership.
Menifee Power Bank reported 937.6 GWh over the twelve months to 2026-07. For a storage plant this is reported gross generation — a discharge proxy, not a cycle count or a conventional capacity factor.
Menifee Power Bank interconnects at SCE 500 kV Valley Substation, on the Southern California Edison Company system.
By capacity, Menifee Power Bank ranks #1 of 1,061 operating plants of the same technology nationally. It ranks #1 of 272 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.
