Long-term Contract for Purchase of Electric Power, Capacity

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- Definition

Long-term Contract for Purchase of Electric Power, Contract Costs

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No definition available.

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- Definition

Long-term Purchase Commitment, Contractual Period

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- Definition

Long-term Purchase Commitment, Cost

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- Definition

Long-term Purchase Commitment, Demand Charges

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- Definition

Long-term Purchase Commitment, Energy Average Cost

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- Definition

Long-term Purchase Commitment, Energy Provided During Period

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- Definition

Long-term Purchase Commitment, Entity's Minimum Percentage of Daily Obligation

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No definition available.

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- Definition

Long-term Purchase Commitment, Number of Purchase Commitments

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- Definition

Long-term Purchase Commitment, Supplier's Minimum Percentage of Daily Obligation

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- Definition

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 980
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SAB Topic 10.D)
-URI http://asc.fasb.org/extlink&oid=6499423&loc=d3e659339-123030

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- Definition

Under long-term contracts with public utility districts, cooperatives or other organizations, a utility company receives a portion of the output of a production plant constructed and financed by the district or cooperative. The utility has only a nominal or no investment at all in the plant but pays a proportionate part of the plant's costs, including debt service. If the utility is obligated to pay certain minimum amounts which cover debt service requirements whether or not the plant is operating, the amount can be disclosed here.

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- Definition

Estimated annual cost to purchase electricity under a long-term contract from a production plant constructed and financed by a public utility district, cooperative, or other organization.

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- Definition

The allocable portion of interest included in charges under a long-term contract to purchase electric power.

+ References

+ Details

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- Definition

Share of plant output being purchased under a long-term contract to purchase electricity from a production plant constructed and financed by a public utility district, cooperative, or other organization.

+ References

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- Definition

The carrying value as of the balance sheet date of the noncurrent portion of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 10
-Section 45
-Paragraph 14
-URI http://asc.fasb.org/extlink&oid=99376301&loc=d3e1336-112600

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 10
-Section 45
-Paragraph 13
-URI http://asc.fasb.org/extlink&oid=99376301&loc=d3e1314-112600

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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- Definition

Minimum amount of purchase arrangement in which the entity has agreed to expend funds to procure goods or services from a supplier.

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No definition available.

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- Definition

Minimum amount of purchase arrangement maturing after the fifth fiscal year following the latest fiscal year. Includes, but not limited to, recorded and unrecorded purchase obligations, long-term purchase commitments, and short-term purchase commitments.

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No definition available.

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- Definition

Minimum amount of purchase arrangement maturing in the fifth fiscal year following the latest fiscal year. Includes, but not limited to, recorded and unrecorded purchase obligations, long-term purchase commitments, and short-term purchase commitments.

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No definition available.

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- Definition

Minimum amount of purchase arrangement maturing in the fourth fiscal year following the latest fiscal year. Includes, but not limited to, recorded and unrecorded purchase obligations, long-term purchase commitments, and short-term purchase commitments.

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No definition available.

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- Definition

Minimum amount of purchase arrangement maturing in the next fiscal year following the latest fiscal year. Includes, but not limited to, recorded and unrecorded purchase obligations, long-term purchase commitments, and short-term purchase commitments.

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No definition available.

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- Definition

Minimum amount of purchase arrangement maturing in the second fiscal year following the latest fiscal year. Includes, but not limited to, recorded and unrecorded purchase obligations, long-term purchase commitments, and short-term purchase commitments.

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No definition available.

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- Definition

Minimum amount of purchase arrangement maturing in the third fiscal year following the latest fiscal year. Includes, but not limited to, recorded and unrecorded purchase obligations, long-term purchase commitments, and short-term purchase commitments.

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No definition available.

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Commitments and Contingencies (Details) $ in Thousands, MWh in Millions	12 Months Ended
	Dec. 31, 2018 USD ($) MWh Contracts $ / kWh MW	Dec. 31, 2017 USD ($) MWh	Dec. 31, 2016 USD ($) MWh
Long-term Purchase Commitment [Line Items]
Long-term Line of Credit, Noncurrent	$ 11,900	$ 102,600
Average cost of Company's energy output (US$ per kWh) \| $ / kWh	0.023
Number of Public Utility Districts with long term purchase agreements \| Contracts	3
Contract expenses	$ 80,165	$ 73,827	$ 77,667
Percent of Output	13.70%
Megawatt Capacity \| MW	706
Estimated 2019 Costs	$ 97,032
2019 Debt Service Costs	17,630
Interest included in 2019 Debt Service Costs	9,682
Debt Outstanding	142,427
Payment Obligations for Power Purchases
2014	427,372
2015	345,913
2016	340,640
2017	350,547
2018	357,338
Thereafter	1,852,487
Total	$ 3,674,297
Total energy obtained during period under purchased power contracts (MWh) \| MWh	14.1	14.5	13.0
Cost incurred during period to provide energy under purchased power contracts	$ 508,200	$ 456,400	$ 402,500
Daily take obligation under long-term service contract (percent)	100.00%
Daily delivery obligation under long-term service contract (percent)	100.00%
Natural Gas [Member]
Payment Obligations for Power Purchases
2014	$ 311,601
2015	162,384
2016	157,156
2017	144,008
2018	91,851
Thereafter	0
Total	867,000
Columbia River projects
Payment Obligations for Power Purchases
2014	92,905
2015	86,691
2016	76,378
2017	85,807
2018	87,452
Thereafter	631,283
Total	1,060,516
Other utilities
Payment Obligations for Power Purchases
2014	888
2015	0
2016	0
2017	0
2018	0
Thereafter	0
Total	888
Non-utility contracts
Payment Obligations for Power Purchases
2014	216,539
2015	255,193
2016	264,262
2017	264,740
2018	269,886
Thereafter	1,221,204
Total	2,491,824
Firm transportation service
Payment Obligations for Power Purchases
2014	165,719
2015	160,053
2016	140,239
2017	139,343
2018	120,486
Thereafter	209,215
Total	935,055
Firm Storage and Peaking Service [Member]
Payment Obligations for Power Purchases
2014	8,899
2015	7,908
2016	3,108
2017	1,619
2018	504
Thereafter	353
Total	22,391
Long-term Purchase Commitment, Demand Charges	119,900
Firm natural gas supply
Payment Obligations for Power Purchases
2014	523,808
2015	336,079
2016	301,434
2017	284,970
2018	212,841
Thereafter	209,568
Total	1,868,700
Combustion turbines
Payment Obligations for Power Purchases
Long-term Purchase Commitment, Demand Charges	44,500
Energy production service contracts
Payment Obligations for Power Purchases
2014	27,243
2015	27,915
2016	28,650
2017	29,345
2018	30,056
Thereafter	124,646
Total	267,855
Automated meter reading system
Payment Obligations for Power Purchases
2014	45,080
2015	44,193
2016	44,741
2017	45,416
2018	46,106
Thereafter	142,724
Total	368,260
Service contract obligations
Payment Obligations for Power Purchases
2014	72,323
2015	72,108
2016	73,391
2017	74,761
2018	76,162
Thereafter	267,370
Total	$ 636,115
Minimum \| Combustion turbines
Payment Obligations for Power Purchases
Remaining terms under contract	1 year
Maximum \| Combustion turbines
Payment Obligations for Power Purchases
Remaining terms under contract	26
Rock Island Project
Long-term Purchase Commitment [Line Items]
Percent of Output	25.00%
Megawatt Capacity \| MW	156
Estimated 2019 Costs	$ 29,794
2019 Debt Service Costs	10,058
Interest included in 2019 Debt Service Costs	5,053
Debt Outstanding	$ 80,058
Rocky Reach Project
Long-term Purchase Commitment [Line Items]
Percent of Output	25.00%
Megawatt Capacity \| MW	325
Estimated 2019 Costs	$ 30,378
2019 Debt Service Costs	5,240
Interest included in 2019 Debt Service Costs	2,297
Debt Outstanding	$ 36,289
Wells Project1
Long-term Purchase Commitment [Line Items]
Percent of Output	25.30%
Megawatt Capacity \| MW	212
Estimated 2019 Costs	$ 32,662
2019 Debt Service Costs	0
Interest included in 2019 Debt Service Costs	0
Debt Outstanding	$ 0
Priest Rapids Development
Long-term Purchase Commitment [Line Items]
Percent of Output	0.60%
Megawatt Capacity \| MW	6
Estimated 2019 Costs	$ 2,099
2019 Debt Service Costs	1,166
Interest included in 2019 Debt Service Costs	1,166
Debt Outstanding	$ 13,040
Wanapum Development
Long-term Purchase Commitment [Line Items]
Percent of Output	0.60%
Megawatt Capacity \| MW	7
Estimated 2019 Costs	$ 2,099
2019 Debt Service Costs	1,166
Interest included in 2019 Debt Service Costs	1,166
Debt Outstanding	13,040
Natural Gas, US Regulated [Member] \| Short-Term Energy Supply Contracts [Member]
Payment Obligations for Power Purchases
2014	37,589
2015	5,734
2016	931
2017	0
2018	0
Thereafter	0
Total	44,254
Subsidiaries [Member] \| Electricity, US Regulated [Member]
Payment Obligations for Power Purchases
2014	117,000
2015	4,000
2016	0
2017	0
2018	0
Thereafter	0
Total	$ 121,100