v3.26.1
Power Supply Agreements (Tables)
6 Months Ended
Jun. 30, 2026
Derivative Instruments, Gain (Loss) [Line Items]  
Schedule of realized and unrealized gains and losses recognized by the company

Three Months Ended

Six Months Ended

June 30, 

June 30, 

2026

2025

2026

2025

Realized gain (loss)

$

0.3

$

(0.1)

$

1.0

$

(0.1)

Unrealized gain (loss)

$

(0.1)

$

(0.1)

$

(1.2)

$

(0.2)

Schedule of unobservable inputs used in the valuation of derivative assets

Valuation Date

Significant Unobservable Input

Range

Average

June 30, 2026

Forward prices (per MWh)

$

33.39

-

$

96.07

$

48.60

December 31, 2025

Forward prices (per MWh)

$

36.09

-

$

106.51

$

55.70

Rockdale PPA  
Derivative Instruments, Gain (Loss) [Line Items]  
Schedule of changes in estimated fair value of derivative asset

Derivative asset balance as of January 1, 2025

$

148,673

Change in fair value:

 

Change due to future price curve

(3,902)

Change due to passage of time and settlements

2,220

Total change in fair value

(1,682)

Derivative asset balance as of June 30, 2025

$

146,991

Derivative asset balance as of January 1, 2026

$

147,026

Change in fair value:

 

Change due to future price curve

(60,301)

Change due to passage of time and settlements

1,740

Total change in fair value

(58,561)

Derivative asset balance as of June 30, 2026

$

88,465

Corsicana PPA  
Derivative Instruments, Gain (Loss) [Line Items]  
Schedule of changes in estimated fair value of derivative asset

Derivative asset balance as of January 1, 2025

$

822

Change in fair value:

 

Change due to future price curve

657

Change due to passage of time and settlements

172

Total change in fair value

829

Derivative asset balance as of June 30, 2025

$

1,651

Derivative asset balance as of January 1, 2026

$

1,022

Change in fair value:

 

Change due to future price curve

(1,902)

Change due to passage of time and settlements

249

Total change in fair value

(1,653)

Derivative liability balance as of June 30, 2026

$

(631)