Rate and Regulatory Matters (Tables)

9 Months Ended

Sep. 30, 2016

Rate and Regulatory Matters [Abstract]

Schedule of request and interim rate information

The request and interim rate information is detailed in the table below:

	Annualized or			Actual Through September 30, 2016
($ in thousands)	Test Year			Three Months Ended		Nine Months Ended
Revenue Increase Requested	$	19,296
Increase Percentage Requested		9.80	%
Jurisdictional Rate Base	$	483,000
Interim Revenue Increase (subject to refund)	$	16,816		$	3,818	$	6,875

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

Revenue Requirement Deficiency Cost Factors (in thousands)	2016 Test Year Allocation
Increased Rate Base	$	10,000
Increased Expenses		7,700
Other		1,596
Total Requested Revenue Increase	$	19,296
Excluded from Interim Rates: Rate Base Effect of Prepaid Pension Asset		(2,480	)
Approved Interim Revenue Increase (subject to refund)	$	16,816

Schedule of revenues recorded under rate riders

	Three Months Ended September 30,				Nine Months Ended September 30,
Rate Rider (in thousands)	2016		2015		2016		2015
Minnesota
Conservation Improvement Program Costs and Incentives1	$	2,839	$	1,970	$	7,554	$	5,508
Transmission Cost Recovery		779		1,141		4,188		3,968
Environmental Cost Recovery		3,127		2,565		9,362		7,722
North Dakota
Renewable Resource Adjustment		2,170		2,073		6,151		5,898
Transmission Cost Recovery		1,950		1,565		6,155		4,912
Environmental Cost Recovery		2,762		2,312		8,344		7,233
South Dakota
Transmission Cost Recovery		335		267		1,397		911
Environmental Cost Recovery		691		461		1,951		1,484
Conservation Improvement Program Costs and Incentives		135		234		418		464

¹Includes MNCIP costs recovered in base rates.