Quarterly report pursuant to Section 13 or 15(d)

Property, Plant and Equipment, net

v3.22.1
Property, Plant and Equipment, net
 3 Months Ended
Mar. 31, 2022
Property, Plant and Equipment [Abstract]  
Property, Plant and Equipment, net Property, Plant and Equipment, net
Property, plant and equipment at March 31, 2022 and December 31, 2021 consisted of the following:
Estimated Useful
Life (in Years)		 March 31, 2022 December 31, 2021
Energy systems
1 - 15 years
 $ 3,478,824  $ 3,556,488 
Machinery and equipment
5 - 7 years
 1,506,919  1,463,153 
Furniture and fixtures
5 years
 196,007  193,698 
Computer software
3 - 5 years
 192,865  192,865 
Leasehold improvements * 466,789  466,789 
    5,841,404  5,872,993 
Less - accumulated depreciation and amortization   (4,135,430) (4,090,049)
  $ 1,705,974  $ 1,782,944 
* Lesser of estimated useful life of asset or lease term
Depreciation and amortization expense on property and equipment for the three months ended March 31, 2022 and 2021 was $126,792 and $160,556, respectively.