<ARTICLE> UT
<MULTIPLIER> 1,000
       
                                                             
<PERIOD-TYPE>                                 9-MOS                   YEAR
<FISCAL-YEAR-END>                          DEC-31-1994             DEC-31-1993
<PERIOD-END>                               SEP-30-1994             DEC-31-1993
<BOOK-VALUE>                                  PER-BOOK                PER-BOOK
<TOTAL-NET-UTILITY-PLANT>                    2,178,483               2,153,212
<OTHER-PROPERTY-AND-INVEST>                    190,426                 229,281
<TOTAL-CURRENT-ASSETS>                         253,970                 278,354
<TOTAL-DEFERRED-CHARGES>                             0                       0
<OTHER-ASSETS>                                 688,415                 680,283
<TOTAL-ASSETS>                               3,311,294               3,341,130
<COMMON>                                       636,294                 636,294
<CAPITAL-SURPLUS-PAID-IN>                      328,622                 329,922
<RETAINED-EARNINGS>                            199,954                 220,259
<TOTAL-COMMON-STOCKHOLDERS-EQ>               1,164,870               1,186,475
<PREFERRED-MANDATORY>                           91,267                  93,176
<PREFERRED>                                    125,000                 115,000
<LONG-TERM-DEBT-NET>                           971,269               1,036,079
<SHORT-TERM-NOTES>                                   0                  79,300
<LONG-TERM-NOTES-PAYABLE>                            0                       0
<COMMERCIAL-PAPER-OBLIGATIONS>                 117,929                  70,006
<LONG-TERM-DEBT-CURRENT-PORT>                  108,000                  23,000
<PREFERRED-STOCK-CURRENT>                            0                       0
<CAPITAL-LEASE-OBLIGATIONS>                          0                       0
<LEASES-CURRENT>                                     0                       0
<OTHER-ITEMS-CAPITAL-AND-LIAB>                 732,959                 738,094
<TOT-CAPITALIZATION-AND-LIAB>                3,311,294               3,341,130
<GROSS-OPERATING-REVENUE>                      857,123               1,112,878
<INCOME-TAX-EXPENSE>                            50,371                  83,970
<OTHER-OPERATING-EXPENSES>                     674,178                 817,928
<TOTAL-OPERATING-EXPENSES>                     724,549                 901,898
<OPERATING-INCOME-LOSS>                        132,574                 210,980
<OTHER-INCOME-NET>                              10,502                  13,578
<INCOME-BEFORE-INTEREST-EXPEN>                 143,076                 224,558
<TOTAL-INTEREST-EXPENSE>                        63,850                  86,231
<NET-INCOME>                                    79,226                 138,327
<PREFERRED-STOCK-DIVIDENDS>                     11,752                  16,442
<EARNINGS-AVAILABLE-FOR-COMM>                   67,474                 121,885
<COMMON-STOCK-DIVIDENDS>                        99,532                 128,003
<TOTAL-INTEREST-ON-BONDS>                       60,011                  82,065
<CASH-FLOW-OPERATIONS>                         213,732                 234,331
<EPS-PRIMARY>                                     1.06                    2.00
<EPS-DILUTED>                                     1.06                    2.00