Registry, engineering, and operating metrics shown on a consistent EIA basis.
| Metric | Commonwealth Chesapeake | Portland (PA) |
|---|---|---|
| 402.5 MW | 194 MW | |
| Petroleum Liquids | Petroleum Liquids | |
| Commonwealth Chesapeake Co LLC | Portland Power, LLC | |
| 7 | 5 | |
| 92.7 GWh | -549 MWh | |
| 1.3% (2025) | 0.4% (2022) | |
| #16 of 705 | #133 of 206 | |
| 2026-06 | 2024-12 |