20 MW flywheel plant for PJM frequency regulation
Hazle Spindle is a 20 MW flywheel facility in Hazle Township, Pennsylvania. Its 200 Beacon Gen4 flywheels—100 kW/25 kWh each—provide PJM frequency regulation; Hazle Spindle LLC owns the project and Convergent Energy + Power operates it. The equipment rating totals 5 MWh, while EIA's June 2026 inventory reports 15 MWh.
Answers use this researched asset profile with live PJM data. Ask about ownership, equipment, project history, or current grid context.
Live PJM public data · answers can be wrong, verify against source data or the ISO.
Exact-project and June 2026 EIA records.
Two hundred Beacon Gen4 flywheels at 25 kWh each.
June 2026 preliminary EIA inventory.
June 2026 preliminary EIA inventory; status OP.
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Operating generator records and technology attributes reported through EIA-860.
| Generator | Capacity | Technology | Operation | Status |
|---|---|---|---|---|
| HRS1 | 20 MW 20 MW summer | Flywheels Electricity used for energy storage · FW | Sep 2013 | Operating |
Monthly EIA generation history and recent market-resource behavior where linked telemetry is available.
EIA-923 reports gross generation and net grid exchange for storage plants. Gross generation is shown as a discharge proxy; it is not a cycle count or conventional capacity factor.
Deterministic links to ERCOT market resources, price records, outage disclosures, queue records, and nearby infrastructure. Candidate joins remain labeled until corroborated.
Parties, market resources, and identifiers tied to this asset, with owner, operator, developer, EPC, compliance provider, and interconnecting entity roles kept separate.
| Largest reported plants | Capacity | State | |
|---|---|---|---|
| Stephentown Spindle | 20 MW | NY | |
| Hazle SpindleCurrent | 20 MW | PA | |
| Cicero Energy Storage 1 LLC | 10 MW | NY | |
| Henrietta D Energy Storage LLC | 10 MW | CA | |
| Cicero Energy Storage 2 LLC | 10 MW | NY | |
| Federalsburg Energy Storage 1 LLC |
Project milestones and public references behind the asset profile.
Flywheel; June 2026 preliminary EIA inventory.
Answered from the published record above. Questions whose inputs this profile does not carry are omitted rather than estimated.
Hazle Spindle has a reported capacity of 20 MW. Source: EIA Form 860M.
Hazle Spindle is a flywheel facility in Luzerne County, PA, participating in the PJM market.
Hazle Spindle is in Luzerne County, PA, inside the PJM balancing area.
Hazle Spindle is operated by Convergent Energy and Power LP according to the EIA generator inventory. Reporting membership does not by itself establish ultimate ownership.
Hazle Spindle reports a commercial operation date of 2013-09. Source: EIA Form 860M.
Hazle Spindle reported 16.7 GWh over the twelve months to 2024-12. For a storage plant this is reported gross generation — a discharge proxy, not a cycle count or a conventional capacity factor.
By capacity, Hazle Spindle ranks #1 of 3 operating plants of the same technology nationally. It ranks #1 of 1 in PA.
Plants within 25 km, nearest first, regardless of technology. Proximity is straight-line distance between mapped plant coordinates; it does not by itself establish a shared point of interconnection.
Portfolio membership follows the latest EIA-860 reporting entity. It does not imply ultimate ownership.