Rate Matters Rate Matters (Tables)

3 Months Ended

Mar. 31, 2016

Public Utilities, General Disclosures [Abstract]

NSP-WI 2017 Electric and Gas Rate Request [Table Text Block]

The major components of the requested rate increases are summarized below:

Electric Rate Request (Millions of Dollars)	Request
Rate base investments	$	11.0
Generation and transmission expenses (excluding fuel and purchased power) (a)	6.8
Fuel and purchased power expenses	11.0
Subtotal	28.8
2015 fuel refund	(9.5		)
Department of Energy settlement refund	(1.9		)
Total electric rate increase	$	17.4

^(a) Includes Interchange Agreement billings. The Interchange Agreement is a Federal Energy Regulatory Commission (FERC) tariff under which NSP-Wisconsin and its affiliate, NSP-Minnesota, own and operate a single integrated electric generation and transmission system and both companies pay a pro-rata share of system capital and operating costs. For financial reporting purposes, these expenses are included in operating and maintenance (O&M) expenses.

Natural Gas Rate Request (Millions of Dollars)	Request
Environmental remediation expenses	$	4.8
Total natural gas rate increase	$	4.8