STATEMENTS OF CASH FLOWS (UNAUDITED) (USD $) In Thousands	9 Months Ended
	Jun. 30, 2011	Jun. 30, 2010
Operating Activities:
Net Income	$ 59,220	$ 44,506
Adjustments to reconcile net income to net cash provided by (used in) operating activities:
Depreciation and amortization	29,233	28,144
Deferred income taxes and investment tax credits	5,269	14,265
Other - net	183	2,075
Changes in assets and liabilities:
Accounts receivable - net	(19,116)	(15,446)
Unamortized purchased gas adjustments	19,779	(2,738)
Deferred purchased gas costs	48,752	31,765
Accounts payable	6,543	5,823
Advance customer billings - net	(28,326)	(33,675)
Taxes accrued	24,000	12,791
Natural gas stored underground	56,600	39,005
Other assets and liabilities	(8,191)	(4,938)
Net cash provided by operating activities	193,946	121,577
Investing Activities:
Capital expenditures	(46,768)	(39,657)
Other investments	225	(3,393)
Net cash used in investing activities	(46,543)	(43,050)
Financing Activities:
Maturity of first mortgage bonds	(25,000)	0
Repayment of short-term debt - net	(129,650)	(53,600)
Borrowings from Laclede Group	149,991	2,200
Repayment of borrowings from Laclede Group	(117,489)	(2,200)
Changes in book overdrafts	474	(25)
Dividends paid	(26,939)	(26,123)
Issuance of common stock to Laclede Group	1,057	1,074
Excess tax benefits from stock-based compensation	272	99
Other	(34)	(56)
Net cash used in financing activities	(147,318)	(78,631)
Net Increase (Decrease) in Cash and Cash Equivalents	85	(104)
Cash and Cash Equivalents at Beginning of Period	1,009	1,402
Cash and Cash Equivalents at End of Period	1,094	1,298
Supplemental Disclosure of Cash Paid (Refunded) During the Period for:
Interest	22,710	23,535
Income taxes	$ 4,964	$ 6,696