These cabinets store excess solar energy, 2. provide backup electricity during outages, 3. contribute to environmental sustainability. An energy cabinet is the hub of the modern distributed power systems—a control, storage, and protection nexus for power distribution. Powering a 5G outdoor base station cabinet, a solar microgrid, or an industrial power node, the energy cabinet integrates power conversion, energy storage, and. The AES Lawai Solar Project in Kauai, Hawaii has a 100 megawatt-hour battery energy storage system paired with a solar photovoltaic system. Sometimes two is better than one.