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ENERGY STORAGE SYSTEMS, NET (Tables)
3 Months Ended
Mar. 31, 2023
Property, Plant and Equipment [Abstract]  
Schedule of Energy Storage Systems, Net Energy storage systems, net, consists of the following (in thousands):
March 31,December 31,
20232022
Energy storage systems placed into service$141,975 $143,154 
Less: accumulated depreciation(60,586)(58,782)
Energy storage systems not yet placed into service6,361 6,385 
Total energy storage systems, net$87,750 $90,757