Covering a 1,295-hectare estate mostly of fallow farmland, the world’s largest solar plant sits in the Antelope Valley straddling two counties of California. The Solar Star project has been supplying its full 579MW of capacity to the grid since May this year and it will be announced as offi cially complete before the end of 2015. PV Tech Power explored the designs behind this mammoth installation near Rosamond, California, to investigate what key factors had to be considered when creating a solar plant that can supply electricity to more than a quarter of a million homes.