The power of heavy-duty electric vehicles is on display again in Massachusetts as electric school buses are being used to send much-needed energy back to the grid. The city is using its electric school buses to send energy back to the grid to help conserve and reduce emissions. This is the second summer Highland and its partners utilized electric school buses to send energy back to the grid in Massachusetts. The partners used two Thomas Built Buses Saf-T-Liner C2 Jouley EV buses powered by Proterra battery systems. School buses sit idle most of the day, so why not send energy back to the grid to conserve when it’s needed most?