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Note 3 - Rate and Regulatory Matters (Tables)

3 Months Ended

Mar. 31, 2020

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

Rate Rider (in thousands)	2020		2019
Minnesota
Renewable Resource Recovery	$	3,254	$	1,316
Conservation Improvement Program Costs and Incentives		1,086		887
Transmission Cost Recovery		715		641
Environmental Cost Recovery		-		(1	)
North Dakota
Transmission Cost Recovery		1,482		1,772
Renewable Resource Adjustment		1,129		729
Generation Cost Recovery		948		248
Environmental Cost Recovery		-		575
South Dakota
Phase-In Rate Plan		646		-
Transmission Cost Recovery		562		473
Conservation Improvement Program Costs and Incentives		344		244
Environmental Cost Recovery		-		(4	)
Total	$	10,166	$	6,880

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

R –

May 1, 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–Scenario A

R –

November 30, 2018

June 1, 2019

6,475

Various

–Scenario B

2,708

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

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

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

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

R –

March 2, 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

1,171

Various

Environmental Cost Recovery

2018 Interim Rate Reset

A –

October 18, 2018

(189

)

-$0.00075

/kwh

Phase-In Rate Plan Recovery

2019 Initial Request

A –

August 21, 2019

September 1, 2019

864

3.345%

of base