US local governments bought more renewable energy in 2020 than ever before, according to new data from the Local Government Renewables Action Tracker. Nearly 100 cities and counties across 33 states completed 143 deals, adding 3,683 megawatts (MW) of renewable energy capacity. This is a 23 percent increase from 2019 and represents enough energy to power 811,000 households annually. Here's how it happened.