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Derivative Instruments (Tables)
12 Months Ended
Dec. 31, 2021
GSWC  
Derivative instruments  
Schedule of changes in the fair value of the derivative The following table presents changes in the fair value of BVESI’s derivatives for the years 2021 and 2020:
(dollars in thousands)20212020
Balance, at beginning of the period$(1,537)$(3,171)
Unrealized gain on purchased power contracts5,978 1,634 
Balance, at end of the period$4,441 $(1,537)