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|EXHIBIT 12.3                                                             
|SOUTHERN CALIFORNIA GAS COMPANY                                          
|COMPUTATION OF RATIO OF EARNINGS TO COMBINED FIXED CHARGES               
|AND PREFERRED STOCK DIVIDENDS                                            
|(Dollars in millions)                                                    
|                                                                          |                                                                                                                                                                                          |       |  |       |  |       |  |       |  |      
|                                                                          |                                                                                                                                                                                          |       |  |       |  |       |  |       |  |      
|                                                                          |                                                                                                                                                                                          | 2007  |  | 2008  |  | 2009  |  | 2010  |  | 2011 
|Fixed Charges:                                                            |                                                                                                                                                                                          |       |  |       |  |       |  |       |  |      
|Interest                                                                  |                                                                                                                                                                                          | $ 72  |  | $ 65  |  | $ 74  |  | $ 72  |  | $ 77 
|Interest portion of annual rentals                                        |                                                                                                                                                                                          | 3     |  | 2     |  | 1     |  | 2     |  | 1    
|Total fixed charges                                                       |                                                                                                                                                                                          | 75    |  | 67    |  | 75    |  | 74    |  | 78   
|Preferred stock dividends (1)                                             |                                                                                                                                                                                          | 2     |  | 2     |  | 2     |  | 2     |  | 2    
|Combined fixed charges and preferred stock dividends for purpose of ratio |                                                                                                                                                                                          | $ 77  |  | $ 69  |  | $ 77  |  | $ 76  |  | $ 80 
|Earnings:                                                                 |                                                                                                                                                                                          |       |  |       |  |       |  |       |  |      
|Pretax income from continuing operations                                  |                                                                                                                                                                                          | $ 391 |  | $ 385 |  | $ 418 |  | $ 463 |  | $ 431
|Add: Total fixed charges (from above)                                     |                                                                                                                                                                                          | 75    |  | 67    |  | 75    |  | 74    |  | 78   
|Less: Interest capitalized                                                |                                                                                                                                                                                          | 1     |  | -     |  | 1     |  | 1     |  | 1    
|Total earnings for purpose of ratio                                       |                                                                                                                                                                                          | $ 465 |  | $ 452 |  | $ 492 |  | $ 536 |  | $ 508
|Ratio of earnings to combined fixed charges and preferred stock dividends |                                                                                                                                                                                          | 6.04  |  | 6.55  |  | 6.39  |  | 7.05  |  | 6.35 
|Ratio of earnings to fixed charges                                        |                                                                                                                                                                                          | 6.20  |  | 6.75  |  | 6.56  |  | 7.24  |  | 6.51 
|                                                                          |                                                                                                                                                                                          |       |  |       |  |       |  |       |  |       | 
|(1)                                                                       | In computing this ratio, Preferred stock dividends represents the before-tax earnings necessary to pay such dividends, computed at the effective tax rates for the applicable periods.