STATEMENTS OF CASH FLOWS - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Operating Activities
Net income	$ 184.7	$ 172.8	$ 154.9
Reconciliation to cash provided by operating activities
Depreciation and amortization	166.2	141.9	139.3
Deferred income taxes and investment tax credits, net	125.2	20.6	77.7
Contributions and payments related to pension and OPEB plans	(0.6)	(0.7)	(66.7)
Cash received for pension plan assets transferred	0.0	0.0	157.8
Change in –
Collateral on deposit	(4.2)	4.4	10.2
Accounts receivable and unbilled revenues	(8.1)	(28.5)	(15.8)
Materials, supplies, and inventories	(3.4)	4.3	18.9
Prepaid taxes	(22.0)	11.3	4.6
Other current assets	0.2	0.9	0.4
Accounts payable	22.3	77.6	(6.3)
Other current liabilities	0.7	11.9	1.2
Other, net	(39.9)	18.0	0.4
Net cash provided by operating activities	421.1	434.5	476.6
Investing activities
Capital expenditures	(517.8)	(444.3)	(335.8)
Proceeds from cash surrender value of insurance	6.6	0.0	0.0
Acquisition of Forward Wind Energy Center	0.0	(77.1)	0.0
Payments for assets transferred from WBS	0.0	(30.0)	(10.1)
Other, net	(4.7)	(0.9)	3.5
Net cash used in investing activities	(515.9)	(552.3)	(342.4)
Financing activities
Retirement of long-term debt	0.0	(250.0)	(125.0)
Issuance of long-term debt	300.0	400.0	0.0
Change in short-term debt	(192.9)	(8.7)	116.3
Payment of dividends to parent	(120.0)	(140.0)	(195.0)
Equity contribution from parent	105.0	120.0	75.0
Other, net	(3.9)	(2.5)	(0.7)
Net cash provided by (used in) financing activities	88.2	118.8	(129.4)
Net change in cash and cash equivalents	(6.6)	1.0	4.8
Cash and cash equivalents at beginning of year	8.9	7.9	3.1
Cash and cash equivalents at end of year	$ 2.3	$ 8.9	$ 7.9