Registry, engineering, and operating metrics shown on a consistent EIA basis.
| Metric | Hazle Spindle Luzerne County | Justin Court Energy Storage Hunterdon County |
|---|---|---|
| Capacity | 20 MW | 20 MW |
| Technology | Flywheels | Batteries |
| Operator | Convergent Energy and Power LP | VESI 23 LLC |
| Operating units | 1 | 1 |
| Latest 12-month generation | 16.7 GWh | 29.8 GWh |
| Latest complete-year capacity factor | — | — |
| National technology rank | #1 of 3 | #359 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.