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Fair Value Measurements (Tables)
3 Months Ended 6 Months Ended
Jun. 30, 2020
Jun. 30, 2020
Fair Value Disclosures [Abstract]    
Fair Value Inputs, Liabilities, Quantitative Information  
The fair value of the long-term notes was estimated using the discounted cash flow method with the U.S. Treasury yields and the Company's credit spreads as inputs, interpolating to the maturity date of each issue. The carrying values and estimated fair values were as follows:
Puget EnergyAt June 30, 2020At December 31, 2019
(Dollars in Thousands)LevelCarrying
Value
Fair
Value
Carrying
Value
Fair
Value
Liabilities:
Long-term debt (fixed-rate), net of discount1
2$6,162,530  $7,608,405  $5,512,225  $7,004,316  
Long-term debt (variable-rate)2234,000  234,000  408,100  408,100  
Total liabilities$6,396,530  $7,842,405  $5,920,325  $7,412,416  

Puget Sound EnergyAt June 30, 2020At December 31, 2019
(Dollars in Thousands)LevelCarrying
Value
Fair
Value
Carrying
Value
Fair
Value
Liabilities:
Long-term debt (fixed-rate), net of discount2
2$4,337,090  $5,992,573  $4,336,142  $5,571,818  
Total liabilities$4,337,090  $5,992,573  $4,336,142  $5,571,818  
_______________
1 The carrying value includes debt issuances costs of $23.1 million and $24.1 million for June 30, 2020, and December 31, 2019, respectively, which are not included in fair value.
2 The carrying value includes debt issuances costs of $23.6 million and $24.4 million for June 30, 2020, and December 31, 2019, respectively, which are not included in fair value.
Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis  
The following table presents the Company's financial assets and liabilities by level, within the fair value hierarchy, that were accounted for at fair value on a recurring basis:
Puget Energy and
Puget Sound Energy
Fair Value
At June 30, 2020
Fair Value
At December 31, 2019
(Dollars in Thousands)Level 2Level 3TotalLevel 2Level 3Total
Assets:      
Electric derivative instruments$19,763  $526  $20,289  $19,282  $651  $19,933  
Natural gas derivative instruments13,634  620  14,254  9,852  1,523  11,375  
Total assets$33,397  $1,146  $34,543  $29,134  $2,174  $31,308  
Liabilities:      
Electric derivative instruments$25,103  $29,135  $54,238  $13,474  $4,030  $17,504  
Natural gas derivative instruments9,425  278  9,703  8,376  241  8,617  
Total liabilities$34,528  $29,413  $63,941  $21,850  $4,271  $26,121  
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation
The following tables present the Company's reconciliation of the changes in the fair value of Level 3 derivatives in the fair value hierarchy:
Puget Energy and
Puget Sound Energy
Three Months Ended
June 30,
(Dollars in Thousands)20202019
Level 3 Roll-Forward Net Asset/(Liability)ElectricNatural GasTotalElectricNatural GasTotal
Balance at beginning of period$(26,305) $1,092  $(25,213) $5,012  $2,758  $7,770  
Changes during period:
Realized and unrealized energy derivatives:
Included in earnings1
(2,284) —  (2,284) (6,190) —  (6,190) 
Included in regulatory assets / liabilities—  (39) (39) —  382  382  
Settlements(20) (711) (731) 574  (1,619) (1,045) 
Transferred into Level 3—  —  —  —  —  —  
Transferred out of Level 3—  —  —  (1,842) 877  (965) 
Balance at end of period$(28,609) $342  $(28,267) $(2,446) $2,398  $(48) 
Puget Energy and
Puget Sound Energy
Six Months Ended
June 30,
(Dollars in Thousands)20202019
Level 3 Roll-Forward Net Asset/(Liability)ElectricNatural GasTotalElectricNatural GasTotal
Balance at beginning of period$(3,378) $1,282  $(2,096) $1,362  $1,673  $3,035  
Changes during period:
Realized and unrealized energy derivatives:
Included in earnings2
(26,837) —  (26,837) 6,135  —  6,135  
Included in regulatory assets / liabilities—  284  284  —  2,279  2,279  
Settlements1,606  (1,224) 382  (12,909) (2,718) (15,627) 
Transferred into Level 3—  —  —  4,391  (398) 3,993  
Transferred out of Level 3—  —  —  (1,425) 1,562  137  
Balance at end of period$(28,609) $342  $(28,267) $(2,446) $2,398  $(48) 
_______________
1. Income Statement locations: Unrealized (gain) loss on derivative instruments, net. Amounts include unrealized gains (losses) on derivatives still held in position as of the reporting date for electric derivatives of $(23.1) million and $(4.7) million for three months ended June 30, 2020 and 2019, respectively.
2. Income Statement locations: Unrealized (gain) loss on derivative instruments, net. Amounts include unrealized gains (losses) on derivatives still held in position as of the reporting date for electric derivatives of $(25.4) million and $(2.4) million for six months ended June 30, 2020 and 2019, respectively.
Fair Value Inputs, Assets and Liabilities, Quantitative Information  
The following table presents the forward price ranges for the Company's Level 3 commodity contracts as of June 30, 2020:
Puget Energy and
Puget Sound Energy
Fair ValueRange
(Dollars in Thousands)
Assets1
Liabilities1
Valuation TechniqueUnobservable InputLowHighWeighted Average
Electric
$526  $29,135  Discounted cash flowPower prices (per MWh)$22.97  $40.05  $30.14  
Natural gas
$620  $278  Discounted cash flowNatural gas prices (per MMBtu)$1.10  $3.08  $1.78  
_______________
1 The valuation techniques, unobservable inputs and ranges are the same for asset and liability positions.
The following table presents the forward price ranges for the Company's Level 3 commodity contracts as of December 31, 2019:
Puget Energy and
Puget Sound Energy
Fair ValueRange
(Dollars in Thousands)
Assets1
Liabilities1
Valuation TechniqueUnobservable InputLowHighWeighted Average
Electric
$651  $4,030  Discounted cash flowPower prices (per MWh)$9.00  $43.85  $33.99  
Natural gas
$1,523  $241  Discounted cash flowNatural gas prices (per MMBtu)$1.25  $3.18  $2.47  
___________
1 The valuation techniques, unobservable inputs and ranges are the same for asset and liability positions.
Schedule of Effect of Significant Unobservable Inputs, Changes in Plan Assets  
The following table presents the significant unobservable inputs used in estimating the impaired long-term power purchase
contracts' fair value:

Puget Energy
Valuation DateUnobservable InputLowHighAverage
March 31, 2020Power prices (per MWh)$10.23  $29.05  $21.27  
Power contract costs per quarter (in thousands)$6,308  $7,085  $6,468  
December 31, 2019Power prices (per MWh)$11.75  $31.44  $22.53  
Power contract costs per quarter (in thousands)$6,237  $7,087  $6,421