News Release-- March 29, 2007

CSC SIGNS $67 MILLION IT SERVICES CONTRACT RENEWAL WITH SEMPRA ENERGY

EL SEGUNDO, Calif., March 29 -- Computer Sciences Corporation (NYSE: CSC) today announced that it has signed a contract extending its information technology (IT) services agreement with Sempra Energy (NYSE: SRE). The new contract, which has a three-year base period and three one-year options, is valued at $67 million if all options are exercised.

Under the terms of the agreement, CSC will continue to provide desktop support and help desk services to 160 Sempra Energy locations throughout the U.S. Most are located in Southern California.

“We are pleased to continue our relationship with Sempra Energy,” said Nick Wilkinson, vice president of Chemical, Energy and Natural Resources within CSC’s Technology Management Group. “This extension demonstrates the quality of work CSC is delivering and our ability to produce results that support key business objectives.”

CSC’s relationship with Sempra Energy dates back to 1995.

About Sempra Energy

Sempra Energy (NYSE: SRE), based in San Diego, is a Fortune 500 energy services holding company with 2006 revenues of nearly $12 billion. The Sempra Energy companies’ 14,000 employees serve more than 29 million consumers in the United States, Europe, Canada, Mexico, South America and Asia.

About CSC

Computer Sciences Corporation is a leading global IT services company. CSC’s mission is to provide customers in industry and government with solutions crafted to meet their specific challenges and enable them to profit from the advanced use of technology.

With approximately 77,000 employees, CSC provides innovative solutions for customers around the world by applying leading technologies and CSC’s own advanced capabilities. These include systems design and integration; IT and business process outsourcing; applications software development; Web and application hosting; and management consulting. Headquartered in El Segundo, Calif., CSC reported revenue of $14.7 billion for the 12 months ended Dec. 29, 2006. For more information, visit the company’s Web site at www.csc.com.