PROPERTY AND EQUIPMENT

12 Months Ended

Dec. 31, 2021

Property Plant And Equipment [Abstract]

Property and Equipment

6. PROPERTY AND EQUIPMENT, NET

Property and equipment, net consisted of the following at December 31, 2021 and 2020:

$ in thousands	Estimated Useful Lives	December 31, 2021			December 31, 2020
Plant infrastructure	15 - 39 years	$	34,725		$	33,944
Miners	5 years		48,121			10,236
Miner facility infrastructure	15 years		15,143			8,791
Land	N/A		8,460			300
Equipment	5 years		1,660			211
Software	3 years		636			66
Coal ash impoundment	4 years		2,410			2,135
Construction in process	N/A		25,856			3,989
Miner deposits	N/A		98,110			5,959
			235,121			65,631
Less: Accumulated depreciation			(18,030	)		(8,986	)
		$	217,091		$	56,645

Total depreciation expense was $8.9 million and $4.6 million for the year ended December 31, 2021 and 2020, respectively.