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v3.21.1

Property, plant and equipment (Tables) | 12 Months Ended
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Dec. 31, 2020
Property, Plant and Equipment [Abstract] |
Property, Plant and Equipment | Property, plant and equipment consist of the following:
2020 |
| Cost |  | Accumulated depreciation |  | Net book value
Generation | $ | 2,918,692 |  |  | $ | 633,210 |  |  | $ | 2,285,482 |
Distribution and transmission | 5,766,885 |  |  | 661,786 |  |  | 5,105,099 |
Land | 114,847 |  |  | — |  |  | 114,847 |
Equipment | 99,722 |  |  | 51,979 |  |  | 47,743 |
Construction in progress |  |  |  |  |
Generation | 136,424 |  |  | — |  |  | 136,424 |
Distribution and transmission | 552,243 |  |  | — |  |  | 552,243 |
| $ | 9,588,813 |  |  | $ | 1,346,975 |  |  | $ | 8,241,838 |
2019 |
| Cost |  | Accumulated depreciation |  | Net book value
Generation | $ | 2,816,611 |  |  | $ | 540,118 |  |  | $ | 2,276,493 |
Distribution and transmission | 4,997,613 |  |  | 598,449 |  |  | 4,399,164 |
Land | 74,517 |  |  | — |  |  | 74,517 |
Equipment | 94,583 |  |  | 47,541 |  |  | 47,042 |
Construction in progress |  |  |  |  |
Generation | 140,235 |  |  | — |  |  | 140,235 |
Distribution and transmission | 303,529 |  |  | — |  |  | 303,529 |
| $ | 8,427,088 |  |  | $ | 1,186,108 |  |  | $ | 7,240,980 |
Capitalization of Interest | Interest and AFUDC capitalized to the cost of the assets in 2020 and 2019 are as follows:
| 2020 |  | 2019
Interest capitalized on non-regulated property | $ | 9,359 |  |  | $ | 4,538 |
AFUDC capitalized on regulated property: |  |  |
Allowance for borrowed funds | 3,475 |  |  | 2,745 |
Allowance for equity funds | 2,219 |  |  | 4,896 |
| $ | 15,053 |  |  | $ | 12,179 |

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- Definition Tabular disclosure of physical assets used in the normal conduct of business and not intended for resale. Includes, but is not limited to, balances by class of assets, depreciation and depletion expense and method used, including composite depreciation, and accumulated deprecation. + 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(13)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229 + Details
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- Definition Tabular disclosure of the capitalization of the entity comprised of its long-term debt and equity instruments. The table may be detailed by subsidiary (legal entity) and include information by type of debt or equity detailed by instrument. + References No definition available. + Details
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