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GENERAL AND BASIS OF PRESENTATION - Solar and Storage Facility Purchase Transaction and Blue Mountain Purchase Transaction (Details) $ in Millions			3 Months Ended	6 Months Ended
	Jan. 29, 2026 USD ($) MW	Jun. 18, 2025 USD ($)	Jun. 30, 2026 USD ($)	Jun. 30, 2026 USD ($)
Innergex Renewables USA LLC
Business Combination [Line Items]
Total cash consideration paid	$ 79.3
Business acquisition, percentage of voting interests acquired	100.00%
Power generation capacity, megawatts \| MW	30
Power generation storage capacity, minimum megawatts \| MW	30
Power generation storage capacity, maximum megawatts \| MW	120
Fixed price power purchase agreement period	25 years
Business combination, acquisition related costs			$ 0.7	$ 1.4
Business combination, pro forma information, earnings or loss of acquiree since acquisition date, actual			2.1	3.4
Innergex Renewables USA LLC \| Storage
Business Combination [Line Items]
Business combination, pro forma information, revenue of acquiree since acquisition date, actual			$ 2.9	$ 4.9
Cyrq Energy
Business Combination [Line Items]
Total cash consideration paid		$ 88.7
Business acquisition, percentage of voting interests acquired		100.00%