FRAMINGHAM, Mass. & KINGMAN, Ariz.--(BUSINESS WIRE)--Ameresco, Inc., (NYSE: AMRC), a leading energy solutions provider dedicated to helping customers navigate the energy transition, today announced the development and commercial operation of a 50MW/200 MWh battery energy storage system (BESS), the largest behind-the-meter (BTM) project in Arizona. Achieving commercial operation in October 2025, this milestone marks a significant advancement in the state's energy infrastructure. The BESS was dev. ...