I found some price data on another island project, a Tesla battery installation on Kaui[1], $0.145/kwh for stored power. The end user price in Hawaii is around

I found some price data on another island project, a Tesla battery installation on Kaui[1], $0.145/kwh for stored power. The end user price in Hawaii is around $0.33/kwh. While that's not a cheap price for storage, LiIon batteries are on a rapid price decline because of manufacturing learning curve. Net net, it looks like they're just breaking into the cost-effective zone and within a few years will be practical in many places. > The Tesla Energy batteries will supply a 52 MWh utility-scale energy storage system in order to help KIUC meet evening peak demand, which typically occurs between 5:00 pm and 10:00 pm... SolarCity said it would charge the utility 14.5 cents per kilowatt-hour for power from the batteries in a 20-year arrangement [1] https://cleantechnica.com/2016/02/19/solarcity-deploy-tesla-energy-batteries-52-mwh-evening-electricity-storage-kauai-hawai%CA%BBi/ https://cleantechnica.com/2016/02/19/solarcity-deploy-tesla-...