Keystone Solar
Lancaster County, Pennsylvania · EIA plant ID 58091 · Operator: Altus Power America Management, LLC
Nameplate5MWSummer 5 MW
Generators1in service
Net generation7GWh12 mo to Aug 2026
Capacity factor15%solar units, summer MW
Heat rate—thermal plants only
First online2012
The 12-month figures include preliminary EIA-923 months, which EIA revises. Final data runs through Dec 2025.
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) |
|---|---|---|---|
| 2012 | 0.2 | 1.3% | — |
| 2013 | 8.4 | 19.1% | — |
| 2014 | 8 | 18.4% | — |
| 2015 | 8.4 | 19.2% | — |
| 2016 | 8.4 | 19.0% | — |
| 2017 | 7.8 | 17.9% | — |
| 2018 | 7.1 | 16.1% | — |
| 2019 | 7.9 | 18.0% | — |
| 2020 | 7.3 | 16.7% | — |
| 2021 | 7.5 | 17.1% | — |
| 2022 | 7.8 | 17.8% | — |
| 2023 | 7.3 | 16.7% | — |
| 2024 | 7.4 | 16.8% | — |
| 2025 | 7.4 | 16.9% | — |
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 |
|---|---|---|---|---|---|---|---|---|
| KSTN | Solar Photovoltaic | PV | 5 | 5 | Sep 2012 | Operating | — | coming soon |
Owner / operator
Operator: Altus Power America Management, LLC. Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
| Altus Power America Management, LLC | 100.0% | 5 MW |
Nearby plants
Within 80 km.
| Muddy Run | 1,072 MW | 8.9 km |
| PPL Holtwood | 247 MW | 10.2 km |
| Peach Bottom | 2,876 MW | 12.1 km |
| York Energy Center | 1,449 MW | 15.6 km |
| Safe Harbor | 418 MW | 16 km |
| Wildcat Point Generation Facility | 1,114 MW | 16.6 km |