v3.26.1
Segment Information
 6 Months Ended
Jun. 30, 2026
Segment Reporting [Abstract]  
Segment Information
Segment information and reconciliation to NSP-Wisconsin's consolidated net income:
Three Months Ended June 30, 2026
(Millions of Dollars)Regulated electric utilityRegulated natural gas utilityTotal segments
Operating revenues (a)
$257 $25 $282 
Electric fuel and purchased power74 — 74 
Cost of natural gas sold and transported— 9 9 
O&M expenses58 8 66 
Depreciation and amortization47 7 54 
Other segment expenses, net
6 2 8 
Interest charges and financing costs18 3 21 
Income tax expense (benefit)13 (2)11 
Net income (loss)$41 $(2)$39 
(a)Operating revenues include $64 million of affiliate electric revenue.
Three Months Ended June 30, 2025
(Millions of Dollars)Regulated electric utilityRegulated natural gas utilityTotal segments
Operating revenues (a)
$253 $24 $277 
Electric fuel and purchased power103 — 103 
Cost of natural gas sold and transported— 9 9 
O&M expenses52 8 60 
Depreciation and amortization42 8 50 
Other segment expenses, net
5 1 6 
Interest charges and financing costs13 2 15 
Income tax expense (benefit)9 (1)8 
Net income (loss)$29 $(3)$26 
(a)Operating revenues include $55 million of affiliate electric revenue.
Six Months Ended June 30, 2026
(Millions of Dollars)Regulated electric utilityRegulated natural gas utilityTotal segments
Operating revenues (a)
$555 $108 $663 
Intersegment revenue— (1)(1)
Total segment revenues555 107 662 
Electric fuel and purchased power183 — 183 
Cost of natural gas sold and transported— 51 51 
O&M expenses115 16 131 
Depreciation and amortization93 15 108 
Other segment expenses, net
12 2 14 
Interest charges and financing costs34 5 39 
Income tax expense 28 4 32 
Net income $90 $14 $104 
(a)Operating revenues include $132 million of affiliate electric revenue.
Six Months Ended June 30, 2025
(Millions of Dollars)Regulated electric utilityRegulated natural gas utilityTotal segments
Operating revenues (a)
$512 $92 $604 
Electric fuel and purchased power209 — 209 
Cost of natural gas sold and transported— 42 42 
O&M expenses106 17 123 
Depreciation and amortization84 15 99 
Other segment expenses, net
11 1 12 
Interest charges and financing costs28 3 31 
Income tax expense 16 4 20 
Net income $58 $10 $68 
(a)Operating revenues include $111 million of affiliate electric revenue.
Asset and capital expenditure information is not provided for NSP-Wisconsin's reportable segments. As an integrated electric and natural gas utility, NSP-Wisconsin operates significant assets that are not dedicated to a specific business segment. Reporting assets and capital expenditures by business segment would require arbitrary and potentially misleading allocations, which may not necessarily reflect the assets that would be required for the operation of the business segments on a stand-alone basis.
Certain costs, such as common depreciation, common O&M expenses and interest expense are allocated based on cost causation allocators across each segment. In addition, a general allocator is used for certain general and administrative expenses, including office supplies, rent, property insurance and general advertising.
Other segment expenses, net, for the reportable segments includes conservation and DSM expenses, taxes (other than income taxes), other income, net intersegment expenses and AFUDC - equity.