San Diego-based Swinerton chose selected the Sunny Central 2200-US for all of the systems, which SMA specifically designed for the US market.

The first project, the 108MW Springbok 1 solar farm in Kern County, California, is already under construction.

All seven sites, ranging from 50MW to 150MW each, are expected to be completed in 2016.

SMA will deliver the 317 inverters as construction commences.