Rattlesnake Ridge Battery Storage
Weld County, Colorado · EIA plant ID 67300 · Operator: Rattlesnake Ridge Energy Storage LLC
Nameplate12MWSummer 12 MW
Generators1in service
Net generation-3GWh12 mo to Dec 2025
Capacity factor—not meaningful for storage
Heat rate—thermal plants only
First online2024
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.
No capacity factor available.
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) |
|---|---|---|---|
| 2024 | -1 | — | — |
| 2025 | -2.7 | — | — |
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 |
|---|---|---|---|---|---|---|---|---|
| RATBA | Batteries | BA | 11.8 | 11.8 | May 2024 | Operating | — | coming soon |
Owner / operator
Operator: Rattlesnake Ridge Energy Storage LLC. Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
| Ameresco | 100.0% | 12 MW |
Nearby plants
Within 80 km.
| SR Platte Solar Farm | 16 MW | 7.3 km |
| Mountain Peak Power Station | 163 MW | 7.5 km |
| Keenesburg Battery Storage | 12 MW | 7.6 km |
| Overland | 11 MW | 7.6 km |
| Keenesburg | — | 8.7 km |
| Rocky Mountain Energy Center | 685 MW | 11.9 km |