Holyoke MA, the site of the last coal fired plant in MA, this year will see the smokestacks of the now closed plant taken down. The site is now home to the largest solar farm in the state, and the first large scale renewables battery storage system. By 2017, the Mount Tom site housed over 17,000 solar panels, and in 2018 Engie (formerly GDF Suez) installed 3 megawatts of battery storage on site to keep supply to the grid consistent.