Annual report [Section 13 and 15(d), not S-K Item 405]

Acquisition of American DG Energy Inc. (Details)

v3.25.1
Acquisition of American DG Energy Inc. (Details) - USD ($)
May 18, 2017
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Business Acquisition [Line Items]        
Goodwill   $ 2,346,566 $ 2,743,424 $ 2,406,156
Goodwill expected to be tax deductible   $ 0    
American DG Energy        
Business Acquisition [Line Items]        
Ownership interest (percent) 100.00%      
Goodwill $ 13,300,000