You can see it was not heavily used and so far has only generated total of 17.9Mw as you can see from LED screen. I bought this unit for a project to expand the production output but decided not to move forward with the project, therefore no need for this unit. The world’s first Secure Power Supply now delivers up to 2,000 W of opportunity power when the grid goes down and the sun is shining. Installation has never been easier thanks to SMA’s Installation Assistant, direct access via smartphone, and integrated DC disconnect. Rated MPPT Voltage Range. MPPT Operating Voltage Range. Operating Input Current per MPPT. Short Circuit Current per MPPT. Number of MPPT Tracker/String per MPPT Tracker. 21.10 x 28.50 x 7.80 inches. Internal Power Consumption at Night. UL 1741, UL 1998, UL 1699B, IEEE1547, FCC Part 15 (Class A & B), CAN/CSA V22.2 107.1-1.