Designed to efficiently transform DC electricity from a utility scale solar panel array to AC power feed into the power grid. It is a self-contained unit so no additional components or electrical boxes are needed beyond the solar array and the utility line. This unit was originally about a $50,000 list price item. It was later discounted to about $40,000. FEATURES: Manufactured by SATCON in the USAModel Powergate PVS-75Serial number 95000A-001Manufactured 03/16/2009100 KVA 3 phase transformer plus line conditioning reactorABB DC and AC breaker switches96% efficiency ratingInternal cooling fans CA Inventory # 6371