Millikan BESSRetired
Orange County, California · EIA plant ID 60760 · Operator: esVolta LP
×2 MW battery retired since 2020 (latest Sep 2025)
Nameplate—MWSummer — MW
Generators0in service
Net generation0GWh12 mo to Dec 2025
Capacity factor0%not meaningful for storage
Heat rate—thermal plants only
First online—
Monthly net generation
EIA-923, all units at the plant. Net of station use; storage can go negative.
FinalPreliminary
Capacity factor by year
Net MWh ÷ (summer MW × hours), primary-fuel units. Each year uses that year's EIA-860 ratings; the hollow dot is the latest 12 months.
Heat rate by year
Electric fuel MMBtu × 1000 ÷ net MWh (Btu/kWh, HHV), fossil units only; CT + CA counted as one combined-cycle block.
Heat rate applies to fuel-burning (thermal) units only.
Annual data table
| Year | Net GWh | Capacity factor | Heat rate (Btu/kWh) |
|---|---|---|---|
| 2016 | 0 | — | — |
| 2017 | -0.2 | — | — |
| 2018 | -0.4 | — | — |
| 2019 | -0.5 | — | — |
| 2020 | -0.3 | — | — |
| 2021 | -0.3 | — | — |
| 2022 | -0.2 | — | — |
| 2023 | -0.2 | — | — |
| 2024 | -0.1 | — | — |
| 2025 | 0 | — | — |
Generators
EIA-860 (annual) with EIA-860M updates through Sep 2026. EIA-923 reports generation by plant, prime mover and fuel, not by unit, so unit-level output isn't shown.
| Gen ID | Technology | Prime mover | Nameplate MW | Summer MW | Online | Status | Planned retirement | OEM / model |
|---|---|---|---|---|---|---|---|---|
| PE101 | Batteries | BA | 2 | 2 | Dec 2016 | Retired Sep 2025 | — | coming soon |
Owner / operator
Operator: esVolta LP. Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
Nearby plants
Within 80 km.
| B Braun Medical | retired | 0.3 km |
| ATT Kelvin | 1 MW | 0.8 km |
| Allergan | 2 MW | 2.8 km |
| HEBT Irvine 1 | 6 MW | 3.1 km |
| Hecate Energy Johanna Facility | 20 MW | 3.2 km |
| Johanna Energy Center, LLC | 80 MW | 3.3 km |