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Fair Value Measurements (Tables)
12 Months Ended
Dec. 31, 2020
16. Fair Value Measurements  
Classification of the methodology used by the Company to fair value its derivatives
As atDecember 31, 2020
millions of Canadian dollarsLevel 1Level 2Level 3Total
Assets
Cash flow hedges
Interest rate hedge$ 1$ - $ - $ 1
1 - - 1
Regulatory deferral
Commodity swaps and forwards
Power purchases 9 - - 9
Natural gas purchases and sales 2 1 - 3
Heavy fuel oil purchases - 2 - 2
11 3 - 14
HFT derivatives
Power swaps and physical contracts 3 2 2 7
Natural gas swaps, futures, forwards, physical contracts and related transportation 1 48 12 61
4 50 14 68
Other derivatives
Foreign exchange forwards - 15 - 15
- 15 - 15
Total assets 16 68 14 98
Liabilities
Regulatory deferral
Commodity swaps and forwards
Coal purchases - 4 - 4
Power purchases 33 - - 33
Heavy fuel oil purchases 3 3 - 6
Natural gas purchases and sales - 2 - 2
Foreign exchange forwards - 17 - 17
36 26 - 62
HFT derivatives
Power swaps and physical contracts 4 2 1 7
Natural gas swaps, futures, forwards and physical contracts 1 10 257 268
5 12 258 275
Other derivatives
Equity derivatives 1 - - 1
1 - - 1
Total liabilities 42 38 258 338
Net assets (liabilities) $ (26)$ 30$ (244)$ (240)

As atDecember 31, 2019
millions of Canadian dollarsLevel 1Level 2Level 3Total
Assets
Regulatory deferral
Commodity swaps and forwards
Power purchases$ 23$ - $ - $ 23
Natural gas purchases and sales - 2 - 2
Heavy fuel oil purchases - 1 - 1
Foreign exchange forwards - 2 - 2
23 5 - 28
HFT derivatives
Power swaps and physical contracts 1 3 1 5
Natural gas swaps, futures, forwards, physical contracts and related transportation (7) 46 14 53
(6) 49 15 58
Other derivatives
Equity derivatives 1 - - 1
1 - - 1
Total assets 18 54 15 87
Liabilities
Cash flow hedges
Foreign exchange forwards - 1 - 1
- 1 - 1
Regulatory deferral
Commodity swaps and forwards
Coal purchases - 31 - 31
Power purchases 36 - - 36
Natural gas purchased and sales 3 2 - 5
Foreign exchange forwards - 6 - 6
39 39 - 78
HFT derivatives
Power swaps and physical contracts 5 2 - 7
Natural gas swaps, futures, forwards and physical contracts 2 33 249 284
7 35 249 291
Total liabilities 46 75 249 370
Net assets (liabilities)$ (28)$ (21)$ (234)$ (283)
Quantitative information about the significant unobservable inputs used in the fair value measurements categorized within Level 3 of the fair value hierarchy
The change in the fair value of the Level 3 financial assets for the year ended December 31, 2020 was as follows:
HFT Derivatives
millions of Canadian dollarsPower Naturalgas Total
Balance, January 1, 2020$ 1$ 14$ 15
Total realized and unrealized gains (losses) included in non-regulated operating revenues 3 (2) 1
Net transfers out of Level 3 (2) - (2)
Balance, December 31, 2020$ 2$ 12$ 14

The change in the fair value of the Level 3 financial liabilities for the year ended December 31, 2020 was as follows:
HFT Derivatives
millions of Canadian dollarsPower Naturalgas Total
Balance, January 1, 2020$ - $ 249$ 249
Total realized and unrealized gains included in non-regulated operating revenues 2 8 10
Net transfers out of Level 3 (1) - (1)
Balance, December 31, 2020 $ 1$ 257$ 258

As at December 31, 2020
millions of Canadian dollarsFair ValueValuationTechnique Unobservable InputRange Weighted average (1)
Assets
HFT derivatives –$ 1Modelled pricingThird-party pricing$20.50 - $62.45$31.14
Power swaps andProbability of default0.02% - 9.74%2.52%
physical contractsDiscount rate0.01% - 0.73%0.25%
1Modelled pricingThird-party pricing$25.70 - $36.05$29.53
Probability of default0.36% - 0.85%0.60%
Discount rate0.06% - 0.41%0.28%
Correlation factor100% - 100%100%
HFT derivatives 18Modelled pricingThird-party pricing$1.66 - $6.22$2.52
Natural gas swaps, futures, Probability of default0.02% - 2.52%0.40%
forwards and physical contracts Discount rate0.00% - 10.36%0.75%
(6)Modelled pricingThird-party pricing$1.82 - $8.44$4.66
Basis adjustment$0.00 - $1.33$0.44
Probability of default 0.02% - 12.58%$1.95
Discount rate0.00% - 0.67%0.13%
Total assets$ 14
Liabilities
HFT derivatives$ 1Modelled pricingThird-party pricing$1.13 - $62.45$36.90
Power swaps andOwn credit risk0.02% - 6.85%2.02%
physical contractsDiscount rate0.01% - 0.73%0.34%
1Modelled pricingThird-party pricing$37.25 - $62.45$55.00
Own credit risk0.36% - 1.28%0.83%
Discount rate0.01% - 0.40%0.31%
Correlation factor100% - 100%100%
HFT derivatives 226Modelled pricingThird-party pricing$1.44 - $6.57$3.68
Natural gas swaps, futures, Own credit risk0.02% - 2.52%0.10%
forwards and physical contractsDiscount rate0.00% - 8.79%0.43%
30Modelled pricingThird-party pricing$1.54 - $8.44$4.69
Basis adjustment$0.00 - $1.33$0.87
Own credit risk0.03% - 12.58%0.10%
Discount rate0.00% - 0.67%0.16%
Total liabilities$ 258
Net assets (liabilities) $ (244)
(1) Unobservable inputs were weighted by the relative fair value of the instruments

As at December 31, 2019
millions of Canadian dollarsFair ValueValuationTechnique Unobservable InputRange Weighted average
Assets
HFT derivatives$ 1Modelled pricingThird-party pricing$21.40 - $74.05$35.03
Power swaps andProbability of default0.01% - 1.14%0.21%
physical contracts Discount rate0.15% - 6.65%2.78%
HFT derivatives 9Modelled pricingThird-party pricing$1.63 - $7.45$2.37
Natural gas swaps, futures,Probability of default0.01% - 2.31%0.09%
forwards, and physical contracts Discount rate0.01% - 20.93%1.55%
5Modelled pricingThird-party pricing$1.33 - $8.76$5.05
Basis adjustment$0.00 - $1.31$0.76
Probability of default0.01% - 3.33%0.28%
Discount rate0.01% - 4.71%0.91%
Total assets$ 15
Liabilities
HFT derivatives 228Modelled pricingThird-party pricing$1.54 - $7.45$4.07
Natural gas swaps, futures, Own credit risk0.01% - 2.31%0.12%
forwards and physical contractsDiscount rate0.01% - 18.63%1.89%
21Modelled pricingThird-party pricing$1.36 - $9.75$5.45
Basis adjustment$0.00 - $1.31$0.91
Own credit risk0.01% - 3.33%0.06%
Discount rate0.01% - 3.76%0.81%
Total liabilities$ 249
Net assets (liabilities) $ (234)
Financial assets and liabilities included on the Consolidated Balance Sheets that are not measured at fair value
Long-term debt is a financial liability not measured at fair value on the Consolidated Balance Sheets. The balance consisted of the following:
As at
millions of Canadian dollarsCarrying AmountFair ValueLevel 1Level 2Level 3Total
December 31, 2020$ 13,721$ 16,487$ - $ 16,020$ 467$ 16,487
December 31, 2019$ 14,180$ 16,049$ - $ 15,598$ 451$ 16,049