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Note 3 - Rate and Regulatory Matters (Tables)

9 Months Ended

Sep. 30, 2020

Schedule of Revenues Recorded under Rate Riders [Table Text Block]

	Three Months Ended September 30,						Nine Months Ended September 30,
Rate Rider (in thousands)	2020			2019			2020			2019
Minnesota
Renewable Resource Recovery	$	3,318		$	1,316		$	9,660		$	3,949
Conservation Improvement Program Costs and Incentives		2,096			1,518			4,703			4,246
Transmission Cost Recovery		2,001			(284	)		2,402			301
Environmental Cost Recovery		-			-			-			(1	)
North Dakota
Renewable Resource Adjustment		1,256			(20	)		3,455			616
Transmission Cost Recovery		809			908			3,131			3,554
Generation Cost Recovery		1,187			137			3,035			607
Environmental Cost Recovery		-			(7	)		-			556
South Dakota
Transmission Cost Recovery		450			743			1,383			1,587
Conservation Improvement Program Costs and Incentives		194			100			748			440
Environmental Cost Recovery		-			(2	)		-			(29	)
Phase-In Rate Plan		(53	)		(10	)		(77	)		(10	)
Total	$	11,258		$	4,399		$	28,440		$	15,816

Schedule of Information on Status of Updates for Previous Periods [Table Text Block]

Rate Rider	R - Request Date A - Approval Date		Effective Date Requested or Approved	Annual Revenue *($000s)*			Rate
Minnesota
Conservation Improvement Program
2019 Incentive and Cost Recovery	A –	August 18, 2020	October 1, 2020	$	8,247		$0.00485	/kwh
2018 Incentive and Cost Recovery	A –	December 27, 2019	January 1, 2020	$	11,926		$0.00710	/kwh
2017 Incentive and Cost Recovery	A –	October 4, 2018	November 1, 2018	$	10,283		$0.00600	/kwh
Transmission Cost Recovery
2018 Annual Update–Updated Request	A –	October 22, 2020	January 1, 2021	$	10,260		Various
2017 Rate Reset	A –	October 30, 2017	November 1, 2017	$	(3,311	)	Various
Environmental Cost Recovery
2018 Annual Update	A –	November 29, 2018	December 1, 2018	$	-		0%	of base
Renewable Resource Adjustment
2019 Annual Update – Revised	A –	December 19, 2019	January 1, 2020	$	12,506		$0.00467	/kwh
2018 Annual Update	A –	August 29, 2018	November 1, 2018	$	5,886		$0.00219	/kwh
North Dakota
Renewable Resource Adjustment
2020 Annual Update	A –	March 18, 2020	April 1, 2020	$	5,762		5.637%	of base
2019 Annual Update	A –	May 1, 2019	June 1, 2019	$	(235	)	-0.224%	of base
2018 Rate Reset for effect of TCJA	A –	February 27, 2018	March 1, 2018	$	9,650		7.493%	of base
Transmission Cost Recovery
2020 Annual Update	R –	August 31, 2020	January 1, 2021	$	5,570		Various
2019 Annual Update	A –	December 18, 2019	January 1, 2020	$	5,739		Various
2018 Supplemental Update	A –	December 6, 2018	February 1, 2019	$	4,801		Various
2018 Rate Reset for effect of TCJA	A –	February 27, 2018	March 1, 2018	$	7,469		Various
Environmental Cost Recovery
2019 Update	A –	October 22, 2019	November 1, 2019	$	-		0%	of base
2018 Update	A –	December 19, 2018	February 1, 2019	$	(378	)	-0.310%	of base
2018 Rate Reset for effect of TCJA	A –	February 27, 2018	March 1, 2018	$	7,718		5.593%	of base
Generation Cost Recovery
2020 Annual Update	A –	June 10, 2020	July 1, 2020	$	6,184		6.041%	of base
2019 Initial Request	A –	May 15, 2019	July 1, 2019	$	2,720		2.547%	of base
South Dakota
Transmission Cost Recovery
2020 Annual Update	A –	February 19, 2020	March 1, 2020	$	2,327		Various
2019 Rate Reset	A –	September 17, 2019	October 1, 2019	$	2,046		Various
2019 Annual Update	A –	February 20, 2019	March 1, 2019	$	1,638		Various
2018 Interim Rate Reset	A –	October 18, 2018	October 18, 2018	$	1,171		Various
Environmental Cost Recovery
2018 Interim Rate Reset	A –	October 18, 2018	October 18, 2018	$	(189	)	-$0.00075	/kwh
Phase-In Rate Plan Recovery
2020 Annual Update	A –	August 6, 2020	September 1, 2020	$	1,625		6.521%	of base
2019 Initial Request	A –	August 21, 2019	September 1, 2019	$	864		3.345%	of base