HOUSTON–(BUSINESS WIRE)–Stem, Inc. (NYSE: STEM), a global leader reimagining technology to support the energy transition, announced today that it is partnering with a leading clean energy asset owner focused on distributed solar and storage projects to operate and optimize a portfolio of battery energy storage systems (BESS) serving a local water utility company in Southern California. The four-site portfolio, including one hybrid solar and storage system, supports the Southern California wat