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Sempra Generation Finalizes Sale of Twin Oaks Power

SAN DIEGO, April 18, 2006 (PRIMEZONE) -- Sempra Generation, a subsidiary of Sempra Energy , has finalized the previously announced sale of its 305-megawatt, coal-fired Twin Oaks Power plant in Robertson County, Texas, to PNM Resources Inc. , an energy holding company based in Albuquerque, N.M., for $480 million in cash.

The cash proceeds from the sale, which was announced in January 2006, will be used to help fund Sempra Energy's capital investments in energy infrastructure. Sempra Generation was advised by Goldman, Sachs & Co. on the transaction.

Sempra Generation operates and maintains a fleet of gas-fired power plants serving the Western U.S. market and provides energy infrastructure for competitive markets.

Sempra Energy, based in San Diego, is a Fortune 500 energy services holding company with 2005 revenues of $11.7 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.

This press release contains statements that are not historical fact and constitute forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995. When the company uses words like "believes," "expects," "anticipates," "intends," "plans," "estimates," "may," "would," "should" or similar expressions, or when the company discusses its strategy or plans, the company is making forward-looking statements. Forward-looking statements are not guarantees of performance. They involve risks, uncertainties and assumptions. Future results may differ materially from those expressed in the forward-looking statements. Forward-looking statements are necessarily based upon various assumptions involving judgments with respect to the future and other risks, including, among others: local, regional, national and international economic, competitive, political, legislative and regulatory conditions and developments; actions by the California Public Utilities Commission, the California State Legislature, the California Department of Water Resources, the Federal Energy Regulatory Commission and other regulatory bodies in the United States and other countries; capital markets conditions, inflation rates, interest rates and exchange rates; energy and trading markets, including the timing and extent of changes in commodity prices; the availability of natural gas; weather conditions and conservation efforts; war and terrorist attacks; business, regulatory, environmental, and legal decisions and requirements; the status of deregulation of retail natural gas and electricity delivery; the timing and success of business development efforts; the resolution of litigation; and other uncertainties, all of which are difficult to predict and many of which are beyond the control of the company. These risks and uncertainties are further discussed in the company's reports filed with the Securities and Exchange Commission that are available through the EDGAR system without charge at its Web site, www.sec.gov and on the company's Web site, www.sempra.com.

Sempra Generation is not the same company as the utilities, SDG&E or SoCalGas, and is not regulated by the California Public Utilities Commission.

CONTACT: Sempra Energy
         Media 
           Art Larson
           (877) 866-2066
           www.sempra.com
         Financial
           Karen Sedgwick
           (877) 736-7727