CONDENSED STATEMENTS OF CASH FLOWS - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023
Operating activities
Net income	$ 111.1	$ 130.4
Reconciliation to cash provided by operating activities
Depreciation and amortization	118.3	111.2
Deferred income taxes and ITCs, net	40.1	20.8
Change in –
Accounts receivable and unbilled revenues, net	31.5	66.6
Materials, supplies, and inventories	11.6	20.9
Prepaid taxes	(11.0)	1.5
Other current assets	6.5	4.1
Accounts payable	(40.1)	(59.7)
Amounts refundable to customers	(0.7)	12.1
Other current liabilities	(4.3)	(7.3)
Other, net	3.4	(7.1)
Net cash provided by operating activities	266.4	293.5
Investing activities
Capital expenditures	(195.9)	(203.1)
Acquisition of Whitewater	0.0	(38.0)
Acquisition of Red Barn	0.0	(143.8)
Other, net	2.9	(1.5)
Net cash used in investing activities	(193.0)	(386.4)
Financing activities
Change in short-term debt	(38.9)	(13.0)
Payment of dividends to parent	(110.0)	(95.0)
Equity contribution from parent	75.0	165.0
Other, net	(0.9)	(0.3)
Net cash provided by (used in) financing activities	(74.8)	56.7
Net change in cash, cash equivalents, and restricted cash	(1.4)	(36.2)
Cash, cash equivalents, and restricted cash at beginning of period	1.4	38.5
Cash, cash equivalents, and restricted cash at end of period	$ 0.0	$ 2.3