The StorEdge system from Israel’s SolarEdge Technologies is now available in Australia, Europe, South Africa, and the United States. With StorEdge, unused solar energy is stored in a battery and used when needed, and for power backup. SolarEdge also reported the shipment of its 10 millionth power optimizer, of which nearly 5 million were sold in 2015.
http://www.solaredge.com/articles/solaredge’s_storedge_solution_is_now_internationally_available
http://www.solaredge.com/articles/solaredge_surpasses_10_million_shipped_power_optimizers