Coming Soon. The ClearPOWER CP12 features a 12KWh battery system with a 8kva inverter. The ClearPOWER C12 is the largest of the ClearPOWER SoHo series systems designed for home owners who are serious about taking control of their home's power storage and usage. Charge your battery system from multiple points including the grid and solar. The ClearPOWER C12 not only offsets your energy costs but can also be set to take advantage of off-peak rates and intelligently charge the battery system for later use when rates increase in addition to taking advantage of excess power generated from a homes solar system.