Sempra Energy's Southern California Gas Co. (SoCalGas) has named Dennis Arriola as president and COO to fill the vacancy created when Anne Shen-Smith was named chair and CEO. SoCalGas Chairman and CEO Michael Allman resigned in June. Arriola returns after spending 14 years at the company and at Sempra; most recently he was CFO of San Jose, CA-based SunPower Corp. Between 1994-2008 Arriola had a variety of leadership positions at SoCalGas and related companies, the last as CFO of SoCalGas and Sempra's San Diego Gas and Electric Co. Arriola has an MBA from Harvard and an undergraduate degree in economics from Stanford.

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