The US residential energy storage sector saw 61.8 MW and 156.5 MWh deployed during Q2 2017 , a year - on - year increase of 60 % and 200 % , respectively , according to data from Wood Mackenzie Power & Renewables . The report revealed California and Hawaii led the surge in deployment , with 72 % of all installations , but Massachusetts and Arizona were also positioning themselves to be major players . In fact, during this quarter residential was the leading sector in both MW and MWh installed. Wood Mackenzie said it anticipated a flat second half to the year , due to supply chain constraints , a tightness that would also slow down the drop in energy storage installations .
The US residential energy storage sector saw 61.8 MW and 156.5 MWh deployed during Q2 2017 , a year - on - year increase of 60 % and 200 % , respectively , according to data from Wood Mackenzie Power & Renewables . The report revealed California and Hawaii led the surge in deployment , with 72 % of all installations , but Massachusetts and Arizona were also positioning themselves to be major players . Wood Mackenzie said it anticipated a flat second half to the year , due to supply chain constraints , a tightness that would also slow down the drop in energy storage installations .