The CPUC approved $1.05bn for the project from 2010 through 2017. Southern California Gas plans to begin replacing and retrofitting an estimated six million natural gas meters with wireless communications modules throughout its service territory beginning in mid-2012.

Anne Smith, chief operating officer of Southern California Gas, said: “We are pleased that the California Public Utilities Commission supports our advanced meter program and recognizes the benefits it will provide to our customers.

“Advanced meters will give customers the same kind of timely information that they get from their banks, cell phone companies and other utilities. Knowing how much energy is being consumed is a fundamental tool to help customers reduce usage and lower utility bills. We want to help them do both.”

According to the CPUC decision, Southern California Gas’ advanced meter system is consistent with the commission energy policy objectives of increasing energy conservation and demand-side management, reducing greenhouse gas emissions, and providing customers with information and tools that allow them to manage and make educated decisions about their energy use, the company said.