INTANGIBLE ASSETS AND GOODWILL - Intangible Assets (Details) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023
Intangible Asset, Finite-Lived [Line Items]
Gross Carrying Amount	$ 479,425	$ 457,821
Accumulated Amortization	(177,681)	(150,212)
Electricity segment
Intangible Asset, Finite-Lived [Line Items]
Gross Carrying Amount	425,115	403,511
Accumulated Amortization	(150,108)	(127,324)
Storage segment
Intangible Asset, Finite-Lived [Line Items]
Gross Carrying Amount	54,310	54,310
Accumulated Amortization	$ (27,573)	$ (22,888)