<TABLE> <S> <C>
<PAGE>
<ARTICLE> UT
<S> <C>
<PERIOD-TYPE> YEAR
<FISCAL-YEAR-END> SEP-30-2000
<PERIOD-START> OCT-01-1999
<PERIOD-END> SEP-30-2000
<BOOK-VALUE> PER-BOOK
<TOTAL-NET-UTILITY-PLANT> 116,731
<OTHER-PROPERTY-AND-INVEST> 0
<TOTAL-CURRENT-ASSETS> 22,129
<TOTAL-DEFERRED-CHARGES> 14,498
<OTHER-ASSETS> 0
<TOTAL-ASSETS> 153,358
<COMMON> 3,000
<CAPITAL-SURPLUS-PAID-IN> 22,538
<RETAINED-EARNINGS> 15,888
<TOTAL-COMMON-STOCKHOLDERS-EQ> 41,426
0
0
<LONG-TERM-DEBT-NET> 41,597
<SHORT-TERM-NOTES> 17,300
<LONG-TERM-NOTES-PAYABLE> 0
<COMMERCIAL-PAPER-OBLIGATIONS> 0
<LONG-TERM-DEBT-CURRENT-PORT> 414
0
<CAPITAL-LEASE-OBLIGATIONS> 0
<LEASES-CURRENT> 0
<OTHER-ITEMS-CAPITAL-AND-LIAB> 52,621
<TOT-CAPITALIZATION-AND-LIAB> 153,358
<GROSS-OPERATING-REVENUE> 94,593
<INCOME-TAX-EXPENSE> 2,147
<OTHER-OPERATING-EXPENSES> 87,790
<TOTAL-OPERATING-EXPENSES> 89,937
<OPERATING-INCOME-LOSS> 4,656
<OTHER-INCOME-NET> 1,093
<INCOME-BEFORE-INTEREST-EXPEN> 5,749
<TOTAL-INTEREST-EXPENSE> 4,953
<NET-INCOME> 796
0
<EARNINGS-AVAILABLE-FOR-COMM> 796
<COMMON-STOCK-DIVIDENDS> 4,184
<TOTAL-INTEREST-ON-BONDS> 3,556
<CASH-FLOW-OPERATIONS> 8,693
<EPS-BASIC> 6.63
<EPS-DILUTED> 6.63
</TABLE>