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Related Party Transactions | 12 Months Ended
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Dec. 31, 2020
Related Party Transactions [Abstract] |
Related Party Transactions | Related Party Transactions PNMR, PNM, TNMP, and NMRD are considered related parties, as is PNMR Services Company, a wholly-owned subsidiary of PNMR that provides corporate services to PNMR and its subsidiaries in accordance with shared services agreements. These services are billed at cost on a monthly basis to the business units. In addition, PNMR provides construction and operations and maintenance services to NMRD, a 50% owned subsidiary of PNMR Development (Note 21), and PNM purchases renewable energy from certain NMRD-owned facilities at a fixed price per MWh of energy produced. PNM also provides interconnection services to PNMR Development (Note 7) and NMRD. PNMR files a consolidated federal income tax return with its affiliated companies. A tax allocation agreement exists between PNMR and each of its affiliated companies. These agreements provide that the subsidiary company will compute its taxable income on a stand-alone basis. If the result is a net tax liability, such amount shall be paid to PNMR. If there are net operating losses and/or tax credits, the subsidiary shall receive payment for the tax savings from PNMR to the extent that PNMR is able to utilize those benefits. See Note 7 for information on intercompany borrowing arrangements. The table below summarizes the nature and amount of related party transactions of PNMR, PNM and TNMP:
| Year Ended December 31,
| 2020 |  | 2019 |  | 2018
|  |  | (In thousands) |  |
Services billings: |  |  |  |  |
PNMR to PNM | $ | 100,872 |  |  | $ | 96,327 |  |  | $ | 95,637 |
PNMR to TNMP | 39,053 |  |  | 36,554 |  |  | 33,493 |
PNM to TNMP | 383 |  |  | 375 |  |  | 367 |
TNMP to PNMR | 141 |  |  | 141 |  |  | 140 |
TNMP to PNM | — |  |  | — |  |  | — |
PNMR to NMRD | 260 |  |  | 238 |  |  | 183 |
Renewable energy purchases: |  |  |  |  |
PNM from NMRD | 9,638 |  |  | 3,124 |  |  | 2,924 |
Interconnection and facility study billings: |  |  |  |  |
PNM to NMRD | 350 |  |  | 650 |  |  | 2,108 |
PNM to PNMR | — |  |  | — |  |  | 68,820 |
PNMR to PNM | — |  |  | 68,820 |  |  | — |
Interest billings: |  |  |  |  |
PNMR to PNM | 6 |  |  | 3,365 |  |  | 2,585 |
PNM to PNMR | 255 |  |  | 299 |  |  | 289 |
PNMR to TNMP | 2 |  |  | 42 |  |  | 136 |
Income tax sharing payments: |  |  |  |  |
PNMR to TNMP | — |  |  | — |  |  | — |
PNMR to PNM | — |  |  | — |  |  | — |
PNM to PNMR | — |  |  | — |  |  | 134 |
TNMP to PNMR | 15,820 |  |  | 12,996 |  |  | 3,424 |

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- Definition The entire disclosure for related party transactions. Examples of related party transactions include transactions between (a) a parent company and its subsidiary; (b) subsidiaries of a common parent; (c) and entity and its principal owners; and (d) affiliates. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 850 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=6457730&loc=d3e39549-107864 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 850 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6457730&loc=d3e39549-107864 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 850 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6457730&loc=d3e39549-107864 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 850 -URI http://asc.fasb.org/topic&trid=2122745 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 850 -SubTopic 10 -Section 50 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=6457730&loc=d3e39691-107864 + Details
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