Mamm Creek
Garfield County, Colorado · EIA plant ID 67322 · Operator: aes clean energy
Nameplate22MWSummer 26 MW
Generators2in service
Net generation0GWh12 mo to Dec 2025
Capacity factor0%solar units, summer MW
Heat rate—thermal plants only
First online2025
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), solar 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) |
|---|---|---|---|
| 2025 | 0 | 0.0% | — |
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 |
|---|---|---|---|---|---|---|---|---|
| MCESS | Batteries | BA | 11.2 | 10 | Dec 2025 | Operating | — | coming soon |
| MCSCO | Solar Photovoltaic | PV | 11.2 | 16.3 | Dec 2025 | Operating | — | coming soon |
Owner / operator
Operator: aes clean energy. Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
| aes clean energy | 100.0% | 22 MW |
Nearby plants
Within 80 km.
| Eagle Springs Solar LLC | 1 MW | 0.2 km |
| Rifle Generating Station | retired | 2.9 km |
| WWRF Solar Plant | 2 MW | 9.9 km |
| Oak Leaf Solar XXXII (CSG) | 2 MW | 10 km |
| Pivot Solar 7 LLC (CSG) | 2 MW | 10.1 km |
| Wheeler Gulch Solar, LLC | 10 MW | 34.9 km |