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United States β€Ί Power plants β€Ί Battery storage

OCTARY USA Β· BATTERY STORAGE

Flywheels plants in the USA

Grid-scale battery and other energy storage in the United States, with power (MW) and, where reported, energy (MWh). Click a state to drill down, or search near a place.

Operating4plants
Operating capacity47.0 MWnameplate
Under construction0.0 MW0 plants
Whole pipeline0.0 MWplanned, approved and building

Map

Loading plants…
OperatingUnder constructionApprovedPlannedRetiredCancelled

Plants

4 plants
PlantCapacityStageStateOwner / operatorYear
Hazle Spindle 20.0 MW
15 MWh		 Operating PA
Luzerne		 Convergent Energy and Power LP 2013
Stephentown Spindle 20.0 MW
15 MWh		 Operating NY
Rensselaer		 Convergent Energy and Power LP 2011
System Control Center 5.0 MW
5 MWh		 Operating TX
Travis		 Austin Energy 2012
Flywheel Energy Storage System Microgrid 2.0 MW
2 MWh		 Operating AK
Kodiak Island		 Kodiak Electric Assn Inc 2015

Operating capacity by state

Click a state to drill down.

AK2MWME–VT–NH–WA–ID–MT–ND–MN–IL–WI–MI–NY20MWRI–MA–OR–NV–WY–SD–IA–IN–OH–PA20MWNJ–CT–CA–UT–CO–NE–MO–KY–WV–VA–MD–DE–AZ–NM–KS–AR–TN–NC–SC–DC–OK–LA–MS–AL–GA–HI–TX5MWFL–

Largest owners and operators

By capacity in the current view. Click to see their plants.

Source: U.S. Energy Information Administration, Form EIA-860M, Monthly Update to the Annual Electric Generator Report, September 2026. Includes generators of 1 MW and over at plants connected to the grid. Planned dates are developers' targets reported to EIA and often move. US EV charging map