Property, Plant and Equipment (Tables)

3 Months Ended

Mar. 31, 2024

Property, plant and equipment at March 31, 2024 and December 31, 2023 consisted of the following:


	Estimated Useful Life (in Years)	March 31, 2024		December 31, 2023
Energy systems	1 - 15 years	$	2,810,232	$	2,810,232
Machinery and equipment	5 - 7 years	1,675,931		1,744,596
Furniture and fixtures	5 years	216,011		212,963
Computer software	3 - 5 years	192,865		192,865
Leasehold improvements	*	592,396		466,789
		5,487,435		5,427,445
Less - accumulated depreciation and amortization		(4,340,366)		(4,264,868)
Property, plant and equipment, net		$	1,147,069	$	1,162,577

* Lesser of estimated useful life of asset or lease term