Quarterly report [Sections 13 or 15(d)]

Segment Information (Schedule of Segment Information) (Details)

v3.26.1
Segment Information (Schedule of Segment Information) (Details) - USD ($)
3 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Dec. 31, 2025
Segment Reporting Information [Line Items]      
Sales $ 7,194,449 $ 12,636,638  
Cost of sales 5,603,201 8,205,313  
Gross profit 1,591,248 4,431,325  
Selling, general and administrative expenses 5,361,423 6,039,298  
Amortization expense 559,375 559,375  
Total operating expenses 5,920,798 6,598,673  
Operating income (loss) (4,329,550) (2,167,348)  
Investment and other income 48,628 48,165  
Gain on sale of assets 2,700    
Fair value remeasurement of contingent forward contract   109,492  
Fair value remeasurement of contingent value rights   19,179  
Financing fees   (576,594)  
Interest expense (133,449) (571,240)  
Gain (loss) on debt extinguishment 332,412 (343,471)  
Other (expense) income, net 250,291 (1,314,469)  
Net loss before income taxes (4,079,259) (3,481,817)  
Depreciation and amortization 622,537 627,315  
Assets 40,120,052 44,427,672 $ 48,244,120
SUNation NY [Member]      
Segment Reporting Information [Line Items]      
Sales 5,153,843 9,544,554  
Cost of sales 3,886,113 5,871,972  
Gross profit 1,267,730 3,672,582  
Selling, general and administrative expenses 2,797,271 3,847,500  
Amortization expense 203,125 203,125  
Total operating expenses 3,000,396 4,050,625  
Operating income (loss) (1,732,666) (378,043)  
Investment and other income 3,958    
Gain on sale of assets 2,700    
Interest expense (6,733)    
Gain (loss) on debt extinguishment 332,412    
Other (expense) income, net 332,337    
Net loss before income taxes (1,400,329) (378,043)  
Depreciation and amortization 246,686 251,050  
Assets 22,872,387 25,302,335  
HEC [Member]      
Segment Reporting Information [Line Items]      
Sales 2,040,606 3,092,084  
Cost of sales 1,717,088 2,333,341  
Gross profit 323,518 758,743  
Selling, general and administrative expenses 786,993 976,674  
Amortization expense 356,250 356,250  
Total operating expenses 1,143,243 1,332,924  
Operating income (loss) (819,725) (574,181)  
Investment and other income 6,333    
Other (expense) income, net 6,333    
Net loss before income taxes (813,392) (574,181)  
Depreciation and amortization 375,851 376,265  
Assets 15,616,779 17,320,441  
Corporate and Other [Member]      
Segment Reporting Information [Line Items]      
Selling, general and administrative expenses 1,777,159 1,215,124  
Total operating expenses 1,777,159 1,215,124  
Operating income (loss) (1,777,159) (1,215,124)  
Investment and other income 38,337 48,165  
Fair value remeasurement of contingent forward contract   109,492  
Fair value remeasurement of contingent value rights   19,179  
Financing fees   (576,594)  
Interest expense (126,716) (571,240)  
Gain (loss) on debt extinguishment   (343,471)  
Other (expense) income, net (88,379) (1,314,469)  
Net loss before income taxes (1,865,538) (2,529,593)  
Assets $ 1,630,886 $ 1,804,896