Sempra Energy (NYSE: SRE) announced that Carlos Ruiz has been named chairman and CEO of the company's Mexican operating subsidiary, Sempra Mexico.

Sempra Mexico is a wholly owned subsidiary and part of Sempra International, one of Sempra Energy's four principal operating divisions. Sempra Mexico has nearly 400 employees and more than $2 billion in assets, including natural gas pipelines and distribution utilities, a liquefied natural gas receipt terminal and a natural gas-fired power plant. The company also is developing a wind energy project in northern Baja California, Mexico.

Ruiz served on Sempra Energy's corporate board of directors from 2007 until earlier this week. In his newly created position, Ruiz will be responsible for management of all of Sempra Energy's Mexican operations. He holds a bachelor's degree from Anahuac University in Mexico City and a master's degree in business administration from Northwestern University in Chicago.

Sempra Energy also announced that Arturo Infanzon has been named to the newly created position of chief operating officer for Sempra Mexico. Infanzon has served as vice president of Mexican operations for Sempra International since January.

Previously, Infanzon was vice president and director of operations for Sempra Pipelines & Storage, which became part of Sempra International in January. He holds a bachelor's degree in accounting from Universidad Autonoma de Baja California in Mexico and a master's degree in finance from San Diego State University.

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