Since your energy is being generated on your roof and not by some anonymous energy provider you are more independent than before. So take your energy future into your own hands and reduce your energy costs to a minimum. The decision for a Foxpower smart energy storage system is also a decision for the highest standards in safety and quality. With storage sizes ranging from 5kWh to 20kWh the Foxpower smart energy storage system will power a detached house, a multi-family house.