The 113.5 MW four-hour phase of Clearway's Daggett complex
Daggett 1 is Clearway's 113.5 MW / 454 MWh four-hour battery phase in San Bernardino County. Its 15-year SDG&E agreement also carries a separate 91 MW, five-hour derated delivery basis; that contractual measure is not the plant's physical nameplate.
Answers use this researched asset profile with live CAISO data. Ask about ownership, equipment, project history, or current grid context.
Live CAISO public data · answers can be wrong, verify against source data or the ISO.
Four-hour EIA basis.
CPUC/SDG&E derated delivery basis.
SDG&E storage agreement through 2040.
Similar plants ranked by technology, capacity, and distance.
Operating generator records and technology attributes reported through EIA-860.
| Generator | Capacity | Technology | Operation | Status |
|---|---|---|---|---|
| DAG1 | 113.5 MW 113.5 MW summer | Batteries Electricity used for energy storage · BA | Sep 2025 | 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.
Parties, market resources, and identifiers tied to this asset, with owner, operator, developer, EPC, compliance provider, and interconnecting entity roles kept separate.
Project milestones and public references behind the asset profile.
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 DAG1 with this operating date.
Answered from the published record above. Questions whose inputs this profile does not carry are omitted rather than estimated.
Daggett 1 has a reported capacity of 113.5 MW and an energy capacity of 454 MWh. Source: EIA Form 860M.
Daggett 1 is a Battery storage facility in San Bernardino County, CA, participating in the CAISO market.
Daggett 1 is in San Bernardino County, CA, inside the CAISO balancing area.
Daggett 1 is operated by Daggett Solar Power 1 LLC according to the EIA generator inventory. Reporting membership does not by itself establish ultimate ownership.
Daggett 1 reported 57.3 GWh over the twelve months to 2026-04. For a storage plant this is reported gross generation — a discharge proxy, not a cycle count or a conventional capacity factor.
By capacity, Daggett 1 ranks #140 of 962 operating plants of the same technology nationally. It ranks #48 of 248 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.