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Commitments and Contingencies - Fiscal Year Maturity (Details) $ in Millions | 1 Months Ended | 12 Months Ended
--- | --- | ---
Apr. 30, 2015 | Dec. 31, 2024 CAD ($) GWh agreement_renewal agreement MW
Purchase obligations: |  |
Total |  | $ 13,599
Year 1 |  | 1,634
Year 2 |  | 1,048
Year 3 |  | 926
Year 4 |  | 866
Year 5 |  | 782
Thereafter |  | 8,343
Gas and fuel purchase obligations |  |
Purchase obligations: |  |
Total |  | 6,299
Year 1 |  | 763
Year 2 |  | 571
Year 3 |  | 520
Year 4 |  | 465
Year 5 |  | 393
Thereafter |  | 3,587
Gas and fuel purchase obligations | FortisBC Energy |  |
Purchase obligations: |  |
Total |  | 5,014
Gas and fuel purchase obligations | UNS Energy |  |
Purchase obligations: |  |
Total |  | 1,160
Renewable natural gas expiring 2044 | FortisBC Energy |  |
Purchase obligations: |  |
Total |  | 2,792
Gas, renewable gas, gas transportation and storage services, expiring 2062 | FortisBC Energy |  |
Purchase obligations: |  |
Total |  | 2,222
Renewable PPAs |  |
Purchase obligations: |  |
Total |  | 2,628
Year 1 |  | 139
Year 2 |  | 166
Year 3 |  | 182
Year 4 |  | 182
Year 5 |  | 173
Thereafter |  | $ 1,786
Renewable PPAs | TEP and UNS Electric |  |
Purchase obligations: |  |
Share of plant output, percentage |  | 100.00%
Waneta Expansion capacity agreement |  |
Purchase obligations: |  |
Total |  | $ 2,362
Year 1 |  | 56
Year 2 |  | 58
Year 3 |  | 59
Year 4 |  | 60
Year 5 |  | 61
Thereafter |  | 2,068
Waneta Expansion capacity agreement | FortisBC Electric |  |
Purchase obligations: |  |
Purchase commitment term | 40 years |
Power purchase obligations |  |
Purchase obligations: |  |
Total |  | 1,335
Year 1 |  | 302
Year 2 |  | 217
Year 3 |  | 131
Year 4 |  | 124
Year 5 |  | 122
Thereafter |  | 439
Power purchase obligations | FortisBC Electric |  |
Purchase obligations: |  |
Total |  | $ 301
Purchase commitment term |  | 20 years
Power purchase obligations | FortisBC Electric | Maximum |  |
Purchase obligations: |  |
Amount of volume required (in mw) | MW |  | 200
Volume of energy required to be purchased (in GWh) | GWh |  | 1,752
Power purchase obligations | Maritime Electric |  |
Purchase obligations: |  |
Total |  | $ 563
Amount of volume required (in mw) | MW |  | 30
Power purchase obligations | Maritime Electric | Nuclear Generating Station |  |
Purchase obligations: |  |
Share of plant output, percentage |  | 4.55%
Power purchase obligations | FortisOntario |  |
Purchase obligations: |  |
Total |  | $ 374
Power purchase obligations | FortisOntario | Maximum |  |
Purchase obligations: |  |
Amount of volume required (in mw) | MW |  | 145
Power purchase obligations | FortisOntario | Minimum |  |
Purchase obligations: |  |
Volume of energy required to be purchased (in GWh) | GWh |  | 537
ITC easement agreement |  |
Purchase obligations: |  |
Total |  | $ 370
Year 1 |  | 14
Year 2 |  | 14
Year 3 |  | 14
Year 4 |  | 14
Year 5 |  | 14
Thereafter |  | $ 300
ITC easement agreement | ITC |  |
Purchase obligations: |  |
Number of agreement renewals | agreement_renewal |  | 10
Agreement renewal term |  | 50 years
Notice, period in advance |  | 1 year
TEP EPC agreements |  |
Purchase obligations: |  |
Total |  | $ 308
Year 1 |  | 307
Year 2 |  | 1
Year 3 |  | 0
Year 4 |  | 0
Year 5 |  | 0
Thereafter |  | $ 0
Number of engineering, procurement and construction agreements | agreement |  | 2
Debt collection agreement |  |
Purchase obligations: |  |
Total |  | $ 99
Year 1 |  | 3
Year 2 |  | 3
Year 3 |  | 3
Year 4 |  | 3
Year 5 |  | 3
Thereafter |  | 84
Renewable energy credit purchase agreements |  |
Purchase obligations: |  |
Total |  | 58
Year 1 |  | 18
Year 2 |  | 7
Year 3 |  | 6
Year 4 |  | 6
Year 5 |  | 6
Thereafter |  | 15
Other |  |
Purchase obligations: |  |
Total |  | 140
Year 1 |  | 32
Year 2 |  | 11
Year 3 |  | 11
Year 4 |  | 12
Year 5 |  | 10
Thereafter |  | $ 64

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