Nominal Capacity Wind-Powered Electric Generation Facility, in MW

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- Definition

Percentage of Purchase Power Obligations

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- Definition

Amount of contractual obligation, including but not limited to, long-term debt, capital lease obligations, operating lease obligations, purchase obligations, and other commitments.

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- Definition

The cash outflow associated with the acquisition of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale; includes cash outflows to pay for construction of self-constructed assets.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 13
-Subparagraph (c)
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- Definition

Amount of the fixed and determinable portion of the unrecorded unconditional purchase obligation maturing in the fifth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 440
-SubTopic 10
-Section 50
-Paragraph 4
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=77896938&loc=d3e25336-109308

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Amount of the fixed and determinable portion of the unrecorded unconditional purchase obligation maturing in the next fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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- Definition

Amount of the fixed and determinable portion of the unrecorded unconditional purchase obligation maturing in the fourth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Amount of the fixed and determinable portion of the unrecorded unconditional purchase obligation maturing in the second fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Amount of the fixed and determinable portion of the unrecorded unconditional purchase obligation maturing in the third fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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- Definition

Amount of the unrecorded obligation to transfer funds in the future for fixed or minimum amounts or quantities of goods or services at fixed or minimum prices (for example, as in take-or-pay contracts or throughput contracts).

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- Definition

Amount of the fixed and determinable portion of the unrecorded unconditional purchase obligation maturing after the fifth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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COMMITMENTS AND CONTINGENCIES (Commitments) (Details) $ in Thousands	1 Months Ended	12 Months Ended
	Jan. 31, 2020 USD ($)	Dec. 31, 2019 USD ($)	Dec. 31, 2018 USD ($)	Dec. 31, 2017 USD ($)	Mar. 31, 2019 USD ($) MWh
Unrecorded Unconditional Purchase Obligation, Fiscal Year Maturity [Abstract]
2020		$ 195,000
2021		149,000
2022		125,000
2023		107,000
2024		108,000
Thereafter		855,000
Total		1,539,000
Capital expenditures		607,593	$ 392,522	$ 345,617
New Mexico
Unrecorded Unconditional Purchase Obligation, Fiscal Year Maturity [Abstract]
Nominal capacity wind-powered electric generation facility \| MWh					250
Contractual obligation					$ 384,000
Capital expenditures		47,000
New Mexico \| Subsequent Event
Unrecorded Unconditional Purchase Obligation, Fiscal Year Maturity [Abstract]
Capital expenditures	$ 226,000
Fuel, Including Transportation
Unrecorded Unconditional Purchase Obligation, Fiscal Year Maturity [Abstract]
2020		94,000
2021		61,000
2022		40,000
2023		33,000
2024		33,000
Thereafter		194,000
Total		455,000
Purchased Power
Unrecorded Unconditional Purchase Obligation, Fiscal Year Maturity [Abstract]
2020		8,000
2021		0
2022		0
2023		0
2024		0
Thereafter		0
Total		8,000
Transmission
Unrecorded Unconditional Purchase Obligation, Fiscal Year Maturity [Abstract]
2020		21,000
2021		16,000
2022		14,000
2023		3,000
2024		3,000
Thereafter		6,000
Total		63,000
Renewable Power Purchase Agreements
Unrecorded Unconditional Purchase Obligation, Fiscal Year Maturity [Abstract]
2020		63,000
2021		63,000
2022		63,000
2023		63,000
2024		62,000
Thereafter		543,000
Total		$ 857,000
Percentage of purchase power obligations (in percentage)		100.00%
RES Performance-Based Incentives
Unrecorded Unconditional Purchase Obligation, Fiscal Year Maturity [Abstract]
2020		$ 8,000
2021		7,000
2022		7,000
2023		7,000
2024		7,000
Thereafter		33,000
Total		69,000
Land Easements and Rights-of-Way
Unrecorded Unconditional Purchase Obligation, Fiscal Year Maturity [Abstract]
2020		1,000
2021		2,000
2022		1,000
2023		1,000
2024		3,000
Thereafter		79,000
Total		$ 87,000