Madison Gas and Electric Company Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Items not affecting cash:
Depreciation and amortization	$ 13,623	$ 12,959
Deferred income taxes	(1,793)	(3,732)
Provision for doubtful receivables	264	254
Employee benefit plan (credit) cost	(561)	202
Equity earnings in MGE Transco	(2,451)	(2,608)
Other items	(152)	641
Changes in working capital items:
Decrease in current assets	25,208	27,124
Decrease in current liabilities	(7,771)	(9,318)
Cash contributions to pension and other postretirement plans	(1,319)	(7,168)
Other noncurrent items, net	(419)	1,526
Cash Provided by Operating Activities	46,978	41,252
Investing Activities:
Capital expenditures	(37,631)	(16,117)
Capital contributions to investments	(1,877)	(2,939)
Other	(35)	928
Cash Used for Investing Activities	(39,543)	(18,128)
Financing Activities:
Repayment of long-term debt	(1,103)	(31,080)
Issuance of long-term debt	0	40,000
Repayments of short-term debt	(1,000)	0
Other	0	(289)
Cash Used for Financing Activities	(13,284)	(2,029)
Change in cash, cash equivalents, and restricted cash	(5,849)	21,095
Cash, cash equivalents, and restricted cash at beginning of period	112,094	101,633
Cash, cash equivalents, and restricted cash at end of period	106,245	122,728
Significant noncash investing activities:
Accrued capital expenditures	4,706	6,804
MGE [Member]
Operating Activities:
Net Income	18,256	18,183
Items not affecting cash:
Depreciation and amortization	13,623	12,959
Deferred income taxes	(2,229)	(4,242)
Provision for doubtful receivables	264	254
Employee benefit plan (credit) cost	(561)	202
Other items	(17)	690
Changes in working capital items:
Decrease in current assets	24,779	26,166
Decrease in current liabilities	(5,749)	(9,022)
Cash contributions to pension and other postretirement plans	(1,319)	(7,168)
Other noncurrent items, net	(468)	1,488
Cash Provided by Operating Activities	46,579	39,510
Investing Activities:
Capital expenditures	(37,631)	(16,117)
Other	(198)	158
Cash Used for Investing Activities	(37,829)	(15,959)
Financing Activities:
Cash dividends paid to parent by MGE	0	(15,000)
Distributions to parent from noncontrolling interest	(7,500)	(5,500)
Repayment of long-term debt	(1,103)	(31,080)
Issuance of long-term debt	0	40,000
Repayments of short-term debt	(1,000)	0
Other	0	(289)
Cash Used for Financing Activities	(9,603)	(11,869)
Change in cash, cash equivalents, and restricted cash	(853)	11,682
Cash, cash equivalents, and restricted cash at beginning of period	10,093	16,442
Cash, cash equivalents, and restricted cash at end of period	9,240	28,124
Significant noncash investing activities:
Accrued capital expenditures	$ 4,706	$ 6,804