Salt River Project’s M-Power prepay program, which has been in operation since 1993 and is the largest in the U.S., is to be upgraded and expanded by Landis+Gyr in a phased, 10-year installation across the company’s service territory.

The utility plans to deploy Landis+Gyr’s Gridstream® RF network beginning this summer to support ongoing improvements to the technology used by its 142,000 prepay customers.

Once the network foundation is established and the prepayment revision has been completed, SRP will begin installing more than 1 million Landis+Gyr E350 AX-SD meters to provide both credit and prepayment options for all their customers.

“Our M-Power program has been very successful and we will now have the tools to expand prepayment options to our entire customer base in coming years,” said Michael Mendonca, senior director of Revenue Cycle Services at SRP. “This agreement with Landis+Gyr will provide SRP with the technology to deliver our customers convenient access to a broader range of information and support more payment choices than our existing solution. It will be a significant step forward for us.”

The project, with its flexible approach to customer billing requirements, is described in a statement to be one of the most unique in the industry and a first within the U.S.

Salt River Project is the third-largest public power utility in the nation, providing electric service to about 985,000 customers in central Arizona, including the Phoenix metropolitan area.