See "Electricity Storage" for an overview of the technology, including analysis that batteries have a payback time of 35-50 years.
- Auwahi Wind, Maui (planned) - battery, 10 MWh [21 MW facility]
- California Wind Integration
- Dogo Island, Japan
- Futamata Wind Park, Japan - 800 kW facility - 17 2 MW sodium-sulfur batteries
- Hachijo Island, Japan - 400 kW/3 MWh NaS battery
- Huxley Hill (King Island Wind Farm), Tasmania - 2.5 MW facility 55,000 L vanadium redox flow battery, 800 kWh, 200 kW output (short-term 400 kW)
- Iowa Stored Energy Park (planned) - compressed air (+ natural gas)
- Kaheawa Wind Power I, Maui - 3 MW facility - 1.5 MW/1 MWh battery
- Kaheawa Wind Power II, Maui (planned) - 21 MW facility - 10 MW/20 MWh battery
- Kahuku Wind, Oahu - 30 MW facility - 15 MW/10 MWh battery, 2,500 sq.ft. building - destroyed by fire Aug. 1, 2012
1.0 MWh "Dynamic Power Resource" from Xtreme Power
Xtreme Power inverter
- Kotzebue, Alaska (planned) - vanadium redox flow battery
- Minwind, Luverne, Minnesota - 11.5 MW facility - 7.2 MWh battery (80 tons)
- Miura Wind Park, Japan - 800 kW facility - 2 500 kW sodium-sulfur batteries
- Moab, Utah - 250 kW × 8 h flow battery
- Norton, Ohio - 2,700 MW compressed air (planned) -
- Notrees Windpower, Texas - 153 MW facility - 36 MW battery (planned)
- Palmdale Micro Grid, California - 450 kW ultracapacitors [950 kW wind, 200 kW gas, 250 kW hydro] (planned)
- PG&E, California - 300 MW compressed air (planned)
- RISO, Denmark - 15 kW × 8 h flow battery
- Rokkasho, Japan - isolated grid (planned): wind power, 6 houses, 100 kW PV power, ? × 100 kW NaS batteries, 8 plug-in hybrid Priuses
- Sorne Hill, Ireland - 12 MWh (1.5 MW × 8 h or 2 MW × 6 h) vanadium redox flow battery (planned; VRB Power Systems bankrupt) [38 MW facility]
- Tomamae Wind Hills, Japan - 30.6 MW facility - 4 MW × 1.5 h vanadium redox flow battery