<ARTICLE> UT
<LEGEND>
This schedule contains summary financial information extracted from the
Consolidated Balance Sheet at 3/31/99, the Consolidated Income Statement and the
Consolidated Statement of Cash Flows for the three months ended 3/31/99 and is
qualified in it entirety by reference to such financial statements.
</LEGEND>
<MULTIPLIER> 1,000
       
                             
<PERIOD-TYPE>                   3-MOS
<FISCAL-YEAR-END>                          DEC-31-1999
<PERIOD-START>                             JAN-01-1999
<PERIOD-END>                               MAR-31-1999
<BOOK-VALUE>                                  PER-BOOK
<TOTAL-NET-UTILITY-PLANT>                    1,503,076
<OTHER-PROPERTY-AND-INVEST>                    724,546
<TOTAL-CURRENT-ASSETS>                         519,223
<TOTAL-DEFERRED-CHARGES>                       369,214
<OTHER-ASSETS>                                       0
<TOTAL-ASSETS>                               3,116,059
<COMMON>                                       702,879
<CAPITAL-SURPLUS-PAID-IN>                        2,133
<RETAINED-EARNINGS>                            396,381
<TOTAL-COMMON-STOCKHOLDERS-EQ>               1,101,393
<PREFERRED-MANDATORY>                           65,000
<PREFERRED>                                     57,654
<LONG-TERM-DEBT-NET>                           727,301
<SHORT-TERM-NOTES>                                   0
<LONG-TERM-NOTES-PAYABLE>                            0
<COMMERCIAL-PAPER-OBLIGATIONS>                       0
<LONG-TERM-DEBT-CURRENT-PORT>                   40,954
<PREFERRED-STOCK-CURRENT>                            0
<CAPITAL-LEASE-OBLIGATIONS>                        428
<LEASES-CURRENT>                                   390
<OTHER-ITEMS-CAPITAL-AND-LIAB>               1,122,939
<TOT-CAPITALIZATION-AND-LIAB>                3,116,059
<GROSS-OPERATING-REVENUE>                      321,768
<INCOME-TAX-EXPENSE>                            16,956
<OTHER-OPERATING-EXPENSES>                     259,855
<TOTAL-OPERATING-EXPENSES>                     276,811
<OPERATING-INCOME-LOSS>                         44,957
<OTHER-INCOME-NET>                               3,869
<INCOME-BEFORE-INTEREST-EXPEN>                  48,826
<TOTAL-INTEREST-EXPENSE>                        15,002
<NET-INCOME>                                    33,824
<PREFERRED-STOCK-DIVIDENDS>                        923
<EARNINGS-AVAILABLE-FOR-COMM>                   32,901
<COMMON-STOCK-DIVIDENDS>                        22,032
<TOTAL-INTEREST-ON-BONDS>                            0
<CASH-FLOW-OPERATIONS>                         345,798
<EPS-PRIMARY>                                     0.60
<EPS-DILUTED>                                     0.59