The companies said they expect to have the first 92 megawatts of solar panels installed by January 2013. The rest are scheduled to be installed by 2015, though PG&E has the option to speed up this installation period.
The solar energy plant, which will cover 1,100 acres when completed, will be able to power 45,000 homes, the companies said.
The project’s solar panels will come from First Solar, which is also the construction, engineering and supply procurement contractor.
Sempra Generation is not the same company as the utility, San Diego Gas & Electric (SDG&E) or Southern California Gas Company (SoCalGas), and Sempra Generation is not regulated by the California Public Utilities Commission.