Madison Gas and Electric Company Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017
Items not affecting cash:
Depreciation and amortization	$ 27,495	$ 26,234
Deferred income taxes	(664)	1,037
Provision for doubtful receivables	354	367
Employee benefit plan (credit) cost	(1,076)	727
Equity earnings in MGE Transco	(4,441)	(5,094)
Other items	160	778
Changes in working capital items:
Decrease in current assets	29,120	20,595
Increase (decrease) in current liabilities	(1,333)	(11,516)
Cash contributions to pension and other postretirement plans	(2,640)	(8,284)
Other noncurrent items, net	2,386	3,257
Cash Provided by Operating Activities	91,618	67,016
Investing Activities:
Capital expenditures	(100,389)	(42,169)
Capital contributions to investments	(3,280)	(5,557)
Other	598	852
Cash Used for Investing Activities	(103,071)	(46,874)
Financing Activities:
Repayment of long-term debt	(2,213)	(32,167)
Issuance of long-term debt	0	40,000
Proceeds from short-term debt	24,200	0
Other	0	(317)
Cash Provided by (Used for) Financing Activities	(374)	(13,805)
Change in cash, cash equivalents, and restricted cash	(11,827)	6,337
Cash, cash equivalents, and restricted cash at beginning of period	112,094	101,633
Cash, cash equivalents, and restricted cash at end of period	100,267	107,970
Significant noncash investing activities:
Accrued capital expenditures	6,467	8,450
MGE [Member]
Operating Activities:
Net Income	34,859	32,333
Items not affecting cash:
Depreciation and amortization	27,495	26,234
Deferred income taxes	(2,574)	(149)
Provision for doubtful receivables	354	367
Employee benefit plan (credit) cost	(1,076)	727
Other items	707	969
Changes in working capital items:
Decrease in current assets	28,686	19,702
Increase (decrease) in current liabilities	1,943	(11,021)
Cash contributions to pension and other postretirement plans	(2,640)	(8,284)
Other noncurrent items, net	2,293	3,141
Cash Provided by Operating Activities	90,047	64,019
Investing Activities:
Capital expenditures	(100,389)	(42,169)
Other	(422)	65
Cash Used for Investing Activities	(100,811)	(42,104)
Financing Activities:
Cash dividends paid to parent by MGE	0	(25,000)
Distributions to parent from noncontrolling interest	(13,500)	(10,000)
Repayment of long-term debt	(2,213)	(32,167)
Issuance of long-term debt	0	40,000
Proceeds from short-term debt	24,200	0
Other	0	(305)
Cash Provided by (Used for) Financing Activities	8,487	(27,472)
Change in cash, cash equivalents, and restricted cash	(2,277)	(5,557)
Cash, cash equivalents, and restricted cash at beginning of period	10,093	16,442
Cash, cash equivalents, and restricted cash at end of period	7,816	10,885
Significant noncash investing activities:
Accrued capital expenditures	$ 6,467	$ 8,450