BrightSource will develop seven solar facilities for SCE under terms of the deal. The first 100-megawatt plant, to be built at BrightSource's Ivanpah complex in the Mojave Desert, is due to come online in early 2013.
In total, BrightSource now has 4.2 GW of solar sites under development.
BrightSource did not disclose the size of the new contract or the cost of building these solar thermal plants.
BrightSource CEO John Woolard revealed earlier this month at the World Economic Forum that the company's existing projects may be delayed because of difficulties in obtaining project financing.