OK, I'm going to start a thread for this because ... Electric Power Monthly - December 2019 for October 2019. Batteries Capacity (MW): PeriodPriorChangeNewChangeMonth1,003.03.31,006.30.33%YTD852.1154.21,006.318.10%Rolling768.9237.41,006.330.88%Plan +12mo93.550.0140.2.Reported utility-scale battery capacity is creeping up and passed 1GW last month. 1GW deserves recognition. An additional 50MW has been reported for the next 12 months, bringing the total to 140.2MW. Obviously this ignores the retail or homebrew small-scale batteries that are being deployed. For comparison of how small scale this is currently: Hydroelectric Pumped Storage: Capacity (MW): PeriodPriorChangeNewChangeMonth22,909.20.022,909.20.00%YTD22,830.279.022,909.20.35%Rolling22,830.279.022,909.20.35%Plan +12mo191.60.0191.6.Note that pumped storage also stores a lot more energy.