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Segment Information | 12 Months Ended
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Dec. 31, 2013
Segment Reporting [Abstract] |
Segment Information | Segment Information - MGE Energy and MGE. The electric utility business purchases, generates and distributes electricity, and contracts for transmission service. The gas utility business purchases and distributes natural gas and contracts for the transportation of natural gas. Both the electric and gas segments operate through MGE Energy's principal subsidiary, MGE. The nonregulated energy operations are conducted through MGE Energy's subsidiaries: MGE Power, MGE Power Elm Road, and MGE Power West Campus. These subsidiaries own and lease electric generating capacity to assist MGE. MGE Power Elm Road has an ownership interest in two coal-fired generating units in Oak Creek, Wisconsin, which are leased to MGE, and MGE Power West Campus owns a controlling interest in the electric generation plant of a natural gas-fired cogeneration facility on the UW campus. MGE Power West Campus's portion is also leased to MGE. The transmission investment segment invests, through MGE Transco, in ATC, a company that provides electric transmission services primarily in Wisconsin. See Footnote 4 for further discussion of MGE Transco and the investment in ATC. The "All O ther s" segment includes: corporate, CWDC, MAGAEL, MGE Construct, NGV Fueling Services, and North Mendota. These entities' operations consist of investing in companies and property which relate to the regulated operations, financing the regulated operations, or owning and operating natural gas compression equipment. General corporate expenses include the cost of executive management, corporate accounting and finance, information technology, risk management, human resources and legal functions, and employee benefits that are allocated to electric and gas segments based on formulas prescribed by the PSCW. Identifiable assets are those used in MGE's operations in each segment. Assets not allocated consist primarily of cash and cash equivalents, restricted cash, investments, other accounts receivable, and prepaid assets. Sales between our electric and gas segments are based on PSCW approved tariffed rates. Additionally, intersegment operations related to the leasing arrangement between our el ectric segment and MGE Power Elm Road/MGE Power West Campus are based on terms previously approved by the PSCW. Consistent with internal reporting, management has presented the direct financing capital lease s between MGE and MGE Power Elm Road/MGE Power West Campus based on actual lease payments included in rates. Lease payments made by MGE to MGE Power Elm Road and MGE Power West Campus are shown as operating expenses. The lease payments received by MGE Power Elm Road and MGE Power West Campus from MGE are shown as lease income in interdepartmental revenues. The depreciation expense associated with the Elm Road Units and WCCF is reflected in the nonregulated energy segment. The following table shows segment information for MGE Energy's and MGE's operations:
(In thousands) |  |  |  |  |  | Non- |  |  |  |  |  | Consolidation/ |  |
MGE Energy |  |  |  |  |  | Regulated |  | Transmission |  | All |  | Elimination |  | Consolidated
|  | Electric |  | Gas |  | Energy |  | Investment |  | Others |  | Entries |  | Total
Year Ended December 31, 2013 |  |  |  |  |  |  |  |  |  |  |  |
Operating revenues | $ | 403,957 | $ | 181,462 | $ | 5,468 | $ | 0 | $ | 0 | $ | 0 | $ | 590,887
Interdepartmental revenues |  | 537 |  | 12,629 |  | 42,591 |  | 0 |  | 0 |  | (55,757) |  | 0
Total operating revenues |  | 404,494 |  | 194,091 |  | 48,059 |  | 0 |  | 0 |  | (55,757) |  | 590,887
Depreciation and amortization |  | (25,780) |  | (5,898) |  | (7,156) |  | 0 |  | (4) |  | 0 |  | (38,838)
Other operating expenses |  | (316,277) |  | (162,661) |  | (128) |  | (1) |  | (752) |  | 55,757 |  | (424,062)
Operating income (loss) |  | 62,437 |  | 25,532 |  | 40,775 |  | (1) |  | (756) |  | 0 |  | 127,987
Other (deductions) income, net |  | 3,062 |  | 59 |  | 0 |  | 9,434 |  | (1,854) |  | 0 |  | 10,701
Interest (expense) income, net |  | (9,645) |  | (2,986) |  | (6,400) |  | 0 |  | 107 |  | 0 |  | (18,924)
Income (loss) before taxes |  | 55,854 |  | 22,605 |  | 34,375 |  | 9,433 |  | (2,503) |  | 0 |  | 119,764
Income tax (provision) benefit |  | (19,176) |  | (9,168) |  | (13,682) |  | (3,796) |  | 963 |  | 0 |  | (44,859)
Net income (loss) | $ | 36,678 | $ | 13,437 | $ | 20,693 | $ | 5,637 | $ | (1,540) | $ | 0 | $ | 74,905
Year Ended December 31, 2012 |  |  |  |  |  |  |  |  |  |  |  |
Operating revenues | $ | 392,365 | $ | 139,727 | $ | 9,231 | $ | 0 | $ | 0 | $ | 0 | $ | 541,323
Interdepartmental revenues |  | 487 |  | 12,814 |  | 34,714 |  | 0 |  | 0 |  | (48,015) |  | 0
Total operating revenues |  | 392,852 |  | 152,541 |  | 43,945 |  | 0 |  | 0 |  | (48,015) |  | 541,323
Depreciation and amortization |  | (26,031) |  | (5,569) |  | (7,107) |  | 0 |  | 0 |  | 0 |  | (38,707)
Other operating expenses |  | (300,149) |  | (136,567) |  | (121) |  | 0 |  | (1,031) |  | 48,015 |  | (389,853)
Operating income (loss) |  | 66,672 |  | 10,405 |  | 36,717 |  | 0 |  | (1,031) |  | 0 |  | 112,763
Other (deductions) income, net |  | 1,145 |  | 323 |  | 0 |  | 9,080 |  | (479) |  | 0 |  | 10,069
Interest (expense) income, net |  | (10,189) |  | (2,874) |  | (6,537) |  | 0 |  | 133 |  | 0 |  | (19,467)
Income (loss) before taxes |  | 57,628 |  | 7,854 |  | 30,180 |  | 9,080 |  | (1,377) |  | 0 |  | 103,365
Income tax (provision) benefit |  | (20,906) |  | (2,769) |  | (12,113) |  | (3,648) |  | 517 |  | 0 |  | (38,919)
Net income (loss) | $ | 36,722 | $ | 5,085 | $ | 18,067 | $ | 5,432 | $ | (860) | $ | 0 | $ | 64,446
Year Ended December 31, 2011 |  |  |  |  |  |  |  |  |  |  |  |
Operating revenues | $ | 375,858 | $ | 165,271 | $ | 5,253 | $ | 0 | $ | 0 | $ | 0 | $ | 546,382
Interdepartmental revenues |  | 495 |  | 12,440 |  | 38,148 |  | 0 |  | 0 |  | (51,083) |  | 0
Total operating revenues |  | 376,353 |  | 177,711 |  | 43,401 |  | 0 |  | 0 |  | (51,083) |  | 546,382
Depreciation and amortization |  | (28,323) |  | (5,593) |  | (7,026) |  | 0 |  | 0 |  | 0 |  | (40,942)
Other operating expenses |  | (292,080) |  | (155,444) |  | (174) |  | 0 |  | (957) |  | 51,083 |  | (397,572)
Operating income (loss) |  | 55,950 |  | 16,674 |  | 36,201 |  | 0 |  | (957) |  | 0 |  | 107,868
Other income, net |  | 71 |  | 20 |  | 0 |  | 8,614 |  | 509 |  | 0 |  | 9,214
Interest (expense) income, net |  | (10,849) |  | (3,060) |  | (6,331) |  | 0 |  | 78 |  | 0 |  | (20,162)
Income (loss) before taxes |  | 45,172 |  | 13,634 |  | 29,870 |  | 8,614 |  | (370) |  | 0 |  | 96,920
Income tax (provision) benefit |  | (15,334) |  | (5,249) |  | (11,988) |  | (3,467) |  | 46 |  | 0 |  | (35,992)
Net income (loss) | $ | 29,838 | $ | 8,385 | $ | 17,882 | $ | 5,147 | $ | (324) | $ | 0 | $ | 60,928
(In thousands) |  |  |  |  |  | Non- |  |  |  | Consolidation/ |  |
MGE |  |  |  |  |  | Regulated |  | Transmission |  | Elimination |  | Consolidated
|  | Electric |  | Gas |  | Energy |  | Investment |  | Entries |  | Total
Year Ended December 31, 2013 |  |  |  |  |  |  |  |  |  |  |  |
Operating revenues | $ | 403,980 | $ | 181,477 | $ | 5,468 | $ | 0 | $ | 0 | $ | 590,925
Interdepartmental revenues |  | 514 |  | 12,614 |  | 42,591 |  | 0 |  | (55,719) |  | 0
Total operating revenues |  | 404,494 |  | 194,091 |  | 48,059 |  | 0 |  | (55,719) |  | 590,925
Depreciation and amortization |  | (25,780) |  | (5,898) |  | (7,156) |  | 0 |  | 0 |  | (38,834)
Other operating expenses* |  | (335,059) |  | (171,717) |  | (13,810) |  | (1) |  | 55,719 |  | (464,868)
Operating income (loss)* |  | 43,655 |  | 16,476 |  | 27,093 |  | (1) |  | 0 |  | 87,223
Other (deductions) income, net* |  | 2,668 |  | (53) |  | 0 |  | 5,638 |  | 0 |  | 8,253
Interest expense, net |  | (9,645) |  | (2,986) |  | (6,400) |  | 0 |  | 0 |  | (19,031)
Net income |  | 36,678 |  | 13,437 |  | 20,693 |  | 5,637 |  | 0 |  | 76,445
Less: Net income attributable to |  |  |  |  |  |  |  |  |  |  |  |
noncontrolling interest, net of tax |  | 0 |  | 0 |  | 0 |  | 0 |  | (27,438) |  | (27,438)
Net income attributable to MGE | $ | 36,678 | $ | 13,437 | $ | 20,693 | $ | 5,637 | $ | (27,438) | $ | 49,007
Year Ended December 31, 2012 |  |  |  |  |  |  |  |  |  |  |
Operating revenues | $ | 392,365 | $ | 139,727 | $ | 9,231 | $ | 0 | $ | 0 | $ | 541,323
Interdepartmental revenues |  | 487 |  | 12,814 |  | 34,714 |  | 0 |  | (48,015) |  | 0
Total operating revenues |  | 392,852 |  | 152,541 |  | 43,945 |  | 0 |  | (48,015) |  | 541,323
Depreciation and amortization |  | (26,031) |  | (5,569) |  | (7,107) |  | 0 |  | 0 |  | (38,707)
Other operating expenses* |  | (320,701) |  | (139,236) |  | (12,234) |  | 0 |  | 48,015 |  | (424,156)
Operating income* |  | 46,120 |  | 7,736 |  | 24,604 |  | 0 |  | 0 |  | 78,460
Other income, net* |  | 791 |  | 223 |  | 0 |  | 5,432 |  | 0 |  | 6,446
Interest expense, net |  | (10,189) |  | (2,874) |  | (6,537) |  | 0 |  | 0 |  | (19,600)
Net income |  | 36,722 |  | 5,085 |  | 18,067 |  | 5,432 |  | 0 |  | 65,306
Less: net income attributable to |  |  |  |  |  |  |  |  |  |  |  |
noncontrolling interest, net of tax |  | 0 |  | 0 |  | 0 |  | 0 |  | (24,489) |  | (24,489)
Net income attributable to MGE | $ | 36,722 | $ | 5,085 | $ | 18,067 | $ | 5,432 | $ | (24,489) | $ | 40,817
Year Ended December 31, 2011 |  |  |  |  |  |  |  |  |  |  |
Operating revenues | $ | 375,858 | $ | 165,271 | $ | 5,253 | $ | 0 | $ | 0 | $ | 546,382
Interdepartmental revenues |  | 495 |  | 12,440 |  | 38,148 |  | 0 |  | (51,083) |  | 0
Total operating revenues |  | 376,353 |  | 177,711 |  | 43,401 |  | 0 |  | (51,083) |  | 546,382
Depreciation and amortization |  | (28,323) |  | (5,593) |  | (7,026) |  | 0 |  | 0 |  | (40,942)
Other operating expenses* |  | (307,193) |  | (160,631) |  | (12,162) |  | 0 |  | 51,083 |  | (428,903)
Operating income* |  | 40,837 |  | 11,487 |  | 24,213 |  | 0 |  | 0 |  | 76,537
Other (deductions) income, net* |  | (150) |  | (42) |  | 0 |  | 5,147 |  | 0 |  | 4,955
Interest expense, net |  | (10,849) |  | (3,060) |  | (6,331) |  | 0 |  | 0 |  | (20,240)
Net income |  | 29,838 |  | 8,385 |  | 17,882 |  | 5,147 |  | 0 |  | 61,252
Less: Net income attributable to |  |  |  |  |  |  |  |  |  |  |  |
noncontrolling interest, net of tax |  | 0 |  | 0 |  | 0 |  | 0 |  | (23,970) |  | (23,970)
Net income attributable to MGE | $ | 29,838 | $ | 8,385 | $ | 17,882 | $ | 5,147 | $ | (23,970) | $ | 37,282
*Amounts are shown net of the related tax expense, consistent with the presentation on the consolidated MGE Income Statement.
The following table shows segment information for MGE Energy's and MGE's assets and capital expenditures:
|  | Utility |  |  | Consolidated
(In thousands) |  |  |  |  |  | Assets |  |  |  |  |  |  |  | Consolidation/ |
MGE Energy |  |  |  |  |  | not |  | Nonregulated | Transmission |  | All |  | Elimination |  |
|  | Electric |  | Gas |  | Allocated |  |  | Energy |  | Investment |  | Others |  | Entries |  | Total
Assets: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
December 31, 2013 | $ | 899,257 | $ | 265,694 | $ | 19,853 |  | $ | 288,116 | $ | 64,504 | $ | 431,436 | $ | (389,800) | $ | 1,579,060
December 31, 2012 |  | 888,444 |  | 285,468 |  | 18,559 |  |  | 323,216 |  | 61,064 |  | 413,291 |  | (403,118) |  | 1,586,924
December 31, 2011 |  | 794,738 |  | 285,702 |  | 32,882 |  |  | 299,421 |  | 57,006 |  | 401,862 |  | (412,729) |  | 1,458,882
Capital Expenditures: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Year ended Dec. 31, 2013 | $ | 100,146 | $ | 15,554 | $ | 0 |  | $ | 3,347 | $ | 0 | $ | 0 | $ | 0 | $ | 119,047
Year ended Dec. 31, 2012 |  | 81,965 |  | 13,812 |  | 0 |  |  | 2,658 |  | 0 |  | 0 |  | 0 |  | 98,435
Year ended Dec. 31, 2011 |  | 47,206 |  | 15,830 |  | 0 |  |  | 2,140 |  | 0 |  | 0 |  | 0 |  | 65,176
|  | Utility |  |  | Consolidated
(In thousands) |  |  |  |  |  | Assets |  |  |  |  |  | Consolidation/ |
MGE |  |  |  |  |  | not | Nonregulated | Transmission |  | Elimination |  |
|  | Electric |  | Gas |  | Allocated |  | Energy |  | Investment |  | Entries |  | Total
Assets: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
December 31, 2013 | $ | 899,257 | $ | 265,694 | $ | 19,853 |  | $ | 288,066 | $ | 64,504 | $ | (6,731) | $ | 1,530,643
December 31, 2012 |  | 888,444 |  | 285,468 |  | 18,559 |  |  | 323,166 |  | 61,064 |  | (23,050) |  | 1,553,651
December 31, 2011 |  | 794,738 |  | 285,702 |  | 32,882 |  |  | 299,171 |  | 57,006 |  | (35,706) |  | 1,433,793
Capital Expenditures: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Year ended Dec. 31, 2013 | $ | 100,146 | $ | 15,554 | $ | 0 |  | $ | 3,347 | $ | 0 | $ | 0 | $ | 119,047
Year ended Dec. 31, 2012 |  | 81,965 |  | 13,812 |  | 0 |  |  | 2,658 |  | 0 |  | 0 |  | 98,435
Year ended Dec. 31, 2011 |  | 47,206 |  | 15,830 |  | 0 |  |  | 2,140 |  | 0 |  | 0 |  | 65,176

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- Definition The entire disclosure for reporting segments including data and tables. Reportable segments include those that meet any of the following quantitative thresholds a) it's reported revenue, including sales to external customers and intersegment sales or transfers is 10 percent or more of the combined revenue, internal and external, of all operating segments b) the absolute amount of its reported profit or loss is 10 percent or more of the greater, in absolute amount of 1) the combined reported profit of all operating segments that did not report a loss or 2) the combined reported loss of all operating segments that did report a loss c) its assets are 10 percent or more of the combined assets of all operating segments. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 131 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6534315&loc=d3e8380-108599 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 32 -URI http://asc.fasb.org/extlink&oid=6534315&loc=d3e8933-108599 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 10 -URI http://asc.fasb.org/extlink&oid=6534315&loc=d3e8538-108599 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 26 -URI http://asc.fasb.org/extlink&oid=6534315&loc=d3e8844-108599 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 29 -URI http://asc.fasb.org/extlink&oid=6534315&loc=d3e8864-108599 Reference 7: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 34 -URI http://asc.fasb.org/extlink&oid=6534315&loc=d3e8981-108599 Reference 8: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 35 -URI http://asc.fasb.org/extlink&oid=6534315&loc=d3e8984-108599 Reference 9: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 42 -URI http://asc.fasb.org/extlink&oid=6534315&loc=d3e9054-108599 Reference 10: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 40 -URI http://asc.fasb.org/extlink&oid=6534315&loc=d3e9031-108599 Reference 11: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 31 -URI http://asc.fasb.org/extlink&oid=6534315&loc=d3e8924-108599 Reference 12: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 41 -URI http://asc.fasb.org/extlink&oid=6534315&loc=d3e9038-108599 Reference 13: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 30 -URI http://asc.fasb.org/extlink&oid=6534315&loc=d3e8906-108599 Reference 14: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 33 -URI http://asc.fasb.org/extlink&oid=6534315&loc=d3e8971-108599 Reference 15: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=6534315&loc=d3e8595-108599 + Details
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