<ARTICLE> UT 
<MULTIPLIER> 1000 
        
                              
<PERIOD-TYPE>                   3-MOS 
<FISCAL-YEAR-END>                          DEC-31-1995 
<PERIOD-END>                               MAR-31-1995 
<BOOK-VALUE>                                  PER-BOOK 
<TOTAL-NET-UTILITY-PLANT>                    3,127,816 
<OTHER-PROPERTY-AND-INVEST>                    490,585 
<TOTAL-CURRENT-ASSETS>                         407,200 
<TOTAL-DEFERRED-CHARGES>                       269,801 
<OTHER-ASSETS>                                 391,743 
<TOTAL-ASSETS>                               4,687,145 
<COMMON>                                       291,329 
<CAPITAL-SURPLUS-PAID-IN>                      564,420 
<RETAINED-EARNINGS>                            633,067 
<TOTAL-COMMON-STOCKHOLDERS-EQ>               1,488,816 
<PREFERRED-MANDATORY>                           25,000 
<PREFERRED>                                     93,493 
<LONG-TERM-DEBT-NET>                         1,169,020 
<SHORT-TERM-NOTES>                              37,176 
<LONG-TERM-NOTES-PAYABLE>                      119,597 
<COMMERCIAL-PAPER-OBLIGATIONS>                       0 
<LONG-TERM-DEBT-CURRENT-PORT>                  143,188 
<PREFERRED-STOCK-CURRENT>                            0 
<CAPITAL-LEASE-OBLIGATIONS>                    101,168 
<LEASES-CURRENT>                                 8,433 
<OTHER-ITEMS-CAPITAL-AND-LIAB>               1,501,254 
<TOT-CAPITALIZATION-AND-LIAB>                4,687,145 
<GROSS-OPERATING-REVENUE>                      491,669 
<INCOME-TAX-EXPENSE>                            47,926 
<OTHER-OPERATING-EXPENSES>                     349,931 
<TOTAL-OPERATING-EXPENSES>                     397,857 
<OPERATING-INCOME-LOSS>                         93,812 
<OTHER-INCOME-NET>                             (3,341) 
<INCOME-BEFORE-INTEREST-EXPEN>                  90,471 
<TOTAL-INTEREST-EXPENSE>                        28,621 
<NET-INCOME>                                    61,850 
<PREFERRED-STOCK-DIVIDENDS>                      1,916 
<EARNINGS-AVAILABLE-FOR-COMM>                   59,934 
<COMMON-STOCK-DIVIDENDS>                        45,447 
<TOTAL-INTEREST-ON-BONDS>                       21,584 
<CASH-FLOW-OPERATIONS>                         143,731 
<EPS-PRIMARY>                                     0.51 
<EPS-DILUTED>                                     0.51