Registry, engineering, and operating metrics shown on a consistent EIA basis.
| Metric | Hazle Spindle Luzerne County | Meyersdale Battery Somerset County |
|---|---|---|
| Capacity | 20 MW | 18 MW |
| Technology | Flywheels | Batteries |
| Operator | Convergent Energy and Power LP | GlidePath Power Operations LLC |
| Operating units | 1 | 1 |
| Latest 12-month generation | 16.7 GWh | 18.9 GWh |
| Latest complete-year capacity factor | — | — |
| National technology rank | #1 of 3 | #388 of 962 |
| Latest EIA report | 2024-12 | 2026-04 |
Generation comes from EIA-923. Capacity, unit counts, technology, and reporting relationships come from EIA-860. Incomplete reporting years are excluded from capacity-factor comparisons.