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Note 4 - Regulatory Assets and Liabilities

12 Months Ended

Dec. 31, 2019

Schedule of Regulatory Assets and Liabilities [Text Block]

4. Regulatory Assets and Liabilities

As a regulated entity, OTP accounts for the financial effects of regulation in accordance with ASC 980. This accounting standard allows for the recording of a regulatory asset or liability for costs that will be collected or refunded in the future as required under regulation. Additionally, ASC 980-605-25 provides for the recognition of revenues authorized for recovery outside of a general rate case under alternative revenue programs which provide for recovery of costs and incentives or returns on investment in such items as transmission infrastructure, renewable energy resources or conservation initiatives. The following tables indicate the amount of regulatory assets and liabilities recorded on the Company’s consolidated balance sheets:

	December 31, 2019								Remaining Recovery/
(in thousands)	Current		Long-Term			Total			Refund Period (months)
Regulatory Assets:
Prior Service Costs and Actuarial Losses on Pensions and Other Postretirement Benefits¹	$	9,090	$	129,102		$	138,192		see below
Accumulated Asset Retirement Obligation (ARO) Accretion/Depreciation Adjustment¹		-		7,772			7,772		asset lives
Conservation Improvement Program Costs and Incentives²		4,024		2,844			6,868			21
Minnesota Transmission Cost Recovery Rider Accrued Revenues²		4,208		-			4,208			12
MISO Schedule 26/26A Transmission Cost Recovery Rider True-ups¹		2,033		968			3,001			24
Nonservice Costs Components of Postretirement Benefits Capitalized for Ratemaking Purposes and Subject to Deferred Recovery¹		-		1,681			1,681		asset lives
Big Stone II Unrecovered Project Costs – Minnesota¹		715		225			940			16
Debt Reacquisition Premiums¹		201		548			749			153
Deferred Marked-to-Market Losses¹		743		-			743			12
Big Stone II Unrecovered Project Costs – South Dakota¹		144		253			397			33
South Dakota Deferred Rate Case Expenses Subject to Recovery¹		138		245			383			34
North Dakota Deferred Rate Case Expenses Subject to Recovery¹		122		244			366			36
Minnesota SPP Transmission Cost Recovery Tracker¹		-		202			202		see below
Minnesota Renewable Resource Rider Accrued Revenues²		131		-			131			12
South Dakota Transmission Cost Recovery Rider Accrued Revenues²		97		-			97			2
Deferred Lease Expenses¹		-		54			54			39
Minnesota Environmental Cost Recovery Rider Accrued Revenues²		4		-			4			12
Total Regulatory Assets	$	21,650	$	144,138		$	165,788
Regulatory Liabilities:
Deferred Income Taxes	$	-	$	141,707		$	141,707		asset lives
Accumulated Reserve for Estimated Removal Costs – Net of Salvage		-		97,726			97,726		asset lives
Refundable Fuel Clause Adjustment Revenues		3,982		-			3,982			12
North Dakota Renewable Resource Recovery Rider Accrued Refund		1,515		-			1,515			12
North Dakota Transmission Cost Recovery Rider Accrued Refund		700		-			700			12
Prior Service Costs and Actuarial Gains on Postretirement Benefits		471		-			471			12
Revenue for Rate Case Expenses Subject to Refund – Minnesota		-		401			401		see below
South Dakota Phase-In Rate Plan Rider Accrued Refund		355		-			355			9
North Dakota Generation Cost Recovery Rider Accrued Refund		287		-			287			6
Minnesota Energy Intensive Trade Exposed Rider Accrued Refund		164		-			164			12
Other		6		72			78			168
Total Regulatory Liabilities	$	7,480	$	239,906		$	247,386
Net Regulatory Asset/(Liability) Position	$	14,170	$	(95,768	)	$	(81,598	)

¹Costs subject to recovery without a rate of return.

²Amount eligible for recovery under an alternative revenue program which includes an incentive or rate of return.

December 31, 2018

Remaining

Recovery/

(in thousands)

Current

Long-Term

Total

Refund Period

(months)

Regulatory Assets:

Prior Service Costs and Actuarial Losses on Pensions and Other Postretirement Benefits¹
$ 6,346 $ 118,433 $ 124,779
see below

Accumulated ARO Accretion/Depreciation Adjustment¹
- 7,169 7,169
asset lives

Conservation Improvement Program Costs and Incentives²
5,995 3,285 9,280 21

Minnesota Transmission Cost Recovery Rider Accrued Revenues²
444 - 444 12

MISO Schedule 26/26A Transmission Cost Recovery Rider True-up¹
240 - 240 12

Nonservice Costs Components of Postretirement Benefits Capitalized for Ratemaking Purposes and Subject to Deferred Recovery¹
- 986 986
asset lives

Big Stone II Unrecovered Project Costs – Minnesota¹
681 947 1,628 28

Debt Reacquisition Premiums¹
207 753 960 165

Deferred Marked-to-Market Losses¹
1,661 743 2,404 24

Big Stone II Unrecovered Project Costs – South Dakota¹
100 342 442 53

South Dakota Deferred Rate Case Expenses Subject to Recovery¹
178 - 178 12

North Dakota Deferred Rate Case Expenses Subject to Recovery¹
455 - 455 12

Minnesota SPP Transmission Cost Recovery Tracker¹
- 176 176
see below

Minnesota Renewable Resource Recovery Rider Accrued Revenues²
452 - 452 12

Minnesota Environmental Cost Recovery Rider Accrued Revenues²
121 - 121 12

Deferred Income Taxes¹
- 2,423 2,423
asset lives

Minnesota Energy Intensive Trade Exposed Rider Accrued Revenues¹
328 - 328 4

North Dakota Environmental Cost Recovery Rider Accrued Revenues²
17 - 17 12

Total Regulatory Assets
$ 17,225 $ 135,257 $ 152,482

Regulatory Liabilities:

Deferred Income Taxes
$ - $ 142,779 $ 142,779
asset lives

Accumulated Reserve for Estimated Removal Costs – Net of Salvage
- 83,229 83,229
asset lives

Refundable Fuel Clause Adjustment Revenues
121 - 121 12

North Dakota Renewable Resource Recovery Rider Accrued Refund
177 - 177 12

North Dakota Transmission Cost Recovery Rider Accrued Refund
60 - 60 12

Revenue for Rate Case Expenses Subject to Refund – Minnesota
- 166 166
see below

MISO Schedule 26/26A Transmission Cost Recovery Rider True-up
- 187 187 24

South Dakota Transmission Cost Recovery Rider Accrued Refund
168 - 168 12

South Dakota Environmental Cost Recovery Rider Accrued Refund
207 - 207 12

Other
5 108 113 180

Total Regulatory Liabilities
$ 738 $ 226,469 $ 227,207

Net Regulatory Asset/(Liability) Position
$ 16,487 $ (91,212 ) $ (74,725 )

¹Costs subject to recovery without a rate of return.

²Amount eligible for recovery under an alternative revenue program which includes an incentive or rate of return.

The regulatory asset and liability related to prior service costs and actuarial losses on pensions and other postretirement benefits represents benefit costs and actuarial losses and gains subject to recovery or refund through rates as they are expensed. These unrecognized benefit costs and actuarial losses and gains are required to be recognized as components of Accumulated Other Comprehensive Income in equity under ASC Topic 715, Compensation—Retirement Benefits, but are eligible for treatment as regulatory assets or liabilities based on their probable inclusion in future retail electric rates.

The Accumulated ARO Accretion/Depreciation Adjustment will accrete and be amortized over the lives of property with asset retirement obligations.

Conservation Improvement Program Costs and Incentives represent mandated conservation expenditures and incentives recoverable through retail electric rates.

The Minnesota Transmission Cost Recovery Rider Accrued Revenues relate to revenues earned on qualifying transmission system facilities and operating costs incurred to serve Minnesota customers that were recoverable from Minnesota customers as of the balance sheet date.

MISO Schedule 26/26A Transmission Cost Recovery Rider True-ups relate to the over/under collection of revenue based on comparison of the expected versus actual construction on eligible projects in the period. The true-ups also include the state jurisdictional portion of MISO Schedule 26/26A for regional transmission cost recovery that was included in the calculation of the state transmission riders and subsequently adjusted to reflect actual billing amounts in the schedule.

The Nonservice Costs Components of Postretirement Benefits Capitalized for Ratemaking Purposes and Subject to Deferred Recovery are employee benefit-related costs that are required to be capitalized for ratemaking purposes and are recovered over the depreciable lives of the assets to which the related labor costs were applied.

Big Stone II Unrecovered Project Costs – Minnesota are the Minnesota share of generation and transmission plant-related costs incurred by OTP related to its participation in the abandoned Big Stone II project.

Debt Reacquisition Premiums are being recovered from OTP customers over the remaining original lives of the reacquired debt issues, the longest of which is 153 months.

All Deferred Marked-to-Market Losses recorded as of the balance sheet date relate to forward purchases of energy scheduled for delivery through December 2020.

Big Stone II Unrecovered Project Costs – South Dakota are the South Dakota share of generation and transmission plant-related costs incurred by OTP related to its participation in the abandoned Big Stone II project.

South Dakota Deferred Rate Case Expenses Subject to Recovery relate to costs incurred in conjunction with OTP’s most recent rate case in South Dakota and are currently being recovered beginning with the establishment of interim rates in October 2018.

North Dakota Deferred Rate Case Expenses Subject to Recovery relate to costs incurred in conjunction with OTP’s most recent rate case in North Dakota currently being recovered beginning with the establishment of interim rates in January 2018.

The Minnesota SPP Transmission Cost Recovery Tracker regulatory asset relates to costs incurred to serve Minnesota customers that are subject to recovery but that had not been billed to Minnesota customers as of the balance sheet date.

The Minnesota Renewable Resource Recovery Rider Accrued Revenues relate to revenues earned on qualifying renewable resource costs incurred to serve Minnesota customers that were recoverable from Minnesota customers as of the balance sheet date.

The South Dakota Transmission Cost Recovery Rider Accrued Revenues relate to revenues earned on qualifying transmission system facilities and operating costs incurred to serve South Dakota customers that were recoverable from South Dakota customers as of the balance sheet date.

Deferred Lease Expenses: Under ASC 842 accounting rules, for leases with scheduled escalating payments, rent expense is required to be recognized on a straight-line basis over the life of the lease based on the sum of those payments. Rate-regulated entities are generally only allowed to recover the amount of actual cash payments on leases and FERC accounting rules require that rent expense be recognized on the basis of cash payments. The balance in the deferred lease expense regulatory asset account represents operating lease right of use asset cumulative amortization and interest costs in excess of cumulative lease payments that are subject to recovery in future periods under regulatory accounting treatment as cash payments are rendered.

The Minnesota Environmental Cost Recovery Rider Accrued Revenues relate to revenues earned on the Minnesota share of OTP’s investment in the Big Stone Plant AQCS project that were recoverable from Minnesota customers as of the balance sheet date.

The regulatory asset and liability related to Deferred Income Taxes results from changes in statutory tax rates accounted for in accordance with ASC Topic 740, Income Taxes.

Minnesota Energy Intensive Trade Exposed Rider Accrued Revenues relate to revenues recorded for fuel and purchased power costs reductions provided to customers in energy intensive trade exposed industries that were subject to recovery from other Minnesota customers as of the balance sheet date.

North Dakota Environmental Cost Recovery Rider Accrued Revenues relate to revenues earned on the North Dakota share of OTP’s investments in the Big Stone Plant AQCS and Hoot Lake Plant MATS projects and for reagent and emission allowances costs that were recoverable from North Dakota customers as of the balance sheet date.

The Accumulated Reserve for Estimated Removal Costs – Net of Salvage is reduced as actual removal costs, net of salvage revenues, are incurred.

The North Dakota Renewable Resource Recovery Rider Accrued Refund relates to amounts collected for qualifying renewable resource costs incurred to serve North Dakota customers that were refundable to North Dakota customers as of the balance sheet date.

The North Dakota Transmission Cost Recovery Rider Accrued Refund relates to amounts collected for qualifying transmission system facilities and operating costs incurred to serve North Dakota customers that were refundable to North Dakota customers as of the balance sheet date.

Revenue for Rate Case Expenses Subject to Refund – Minnesota relates to revenues collected under general rates to recover costs related to prior rate case proceedings in excess of the actual costs incurred.

The South Dakota Phase-In Rate Plan Rider Accrued Refund relates to amounts collected for actual and forecasted costs for Astoria Station, Merricourt, and additional load growth that were refundable to South Dakota customers as of the balance sheet date.

The North Dakota Generation Cost Recovery Rider Accrued Refund relates to revenues collected under the rider in excess of returns allowed on recoverable costs incurred for the North Dakota share of OTP’s investment in Astoria Station, a natural gas-fired combustion turbine generation facility under construction near Astoria, South Dakota. The balance represents amounts subject to refund to North Dakota customers that had been billed to North Dakota customers as of the balance sheet date.

The Minnesota Energy Intensive Trade Exposed Rider Accrued Refund relates to over-collected amounts from Minnesota retail customers for fuel and purchased power costs reductions provided to customers in energy intensive trade exposed industries that were subject to refund to Minnesota customers as of the balance sheet date.

The South Dakota Transmission Cost Recovery Rider Accrued Refund relates to amounts collected for qualifying transmission system facilities and operating costs incurred to serve South Dakota customers that were refundable to South Dakota customers as of the balance sheet date.

The South Dakota Environmental Cost Recovery Rider Accrued Refund relates to amounts collected on the South Dakota share of OTP’s investments in the Big Stone Plant AQCS and Hoot Lake Plant MATS projects that were refundable to South Dakota customers as of the balance sheet date.

If for any reason OTP ceases to meet the criteria for application of guidance under ASC 980 for all or part of its operations, the regulatory assets and liabilities that no longer meet such criteria would be removed from the consolidated balance sheet and included in the consolidated statement of income as an expense or income item in the period in which the application of guidance under ASC 980 ceases.