Mark A. Snell, chief financial officer of Sempra Energy, and Jeremy Wright, chief administrative officer of RBS’ markets business, will manage the business jointly in the interim, until a successor is named.

“David has played a significant leadership role in building our successful commodities business and we wish him well,” said Donald E. Felsinger, chairman and chief executive officer of Sempra Energy. “Looking forward, we have a very strong commodities franchise that continues to grow and prosper with the support of RBS.”

“Together, we built a company about which we can be immensely proud,” Messer said.

The joint venture was formed April 1, 2008, when RBS Sempra Commodities LLP purchased Sempra Commodities. RBS Sempra Commodities became a part of RBS’ Global Banking and Markets business.