EARNINGS (LOSS) PER SHARE (Details) - shares	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Earnings (Loss) per Share [Abstract]
Antidilutive securities excluded from EPS calculation (in shares)	825,573	4,534,123	825,573	4,534,123
Earnout Provision, Includes New Shares of Common Stock to be Issued [Member] | Peck Electric Co. [Member]
Earnings (Loss) per Share [Abstract]
Antidilutive securities excluded from EPS calculation (in shares)	0	898,473	0	898,473
Earnout Provision, Includes New Shares of Common Stock to be Issued [Member] | Exit Strategy Partners, LLC [Member]
Earnings (Loss) per Share [Abstract]
Antidilutive securities excluded from EPS calculation (in shares)	0	11,231	0	11,231
Earnout Provision, Including New Shares of Common Stock That May be Issued to Holders of Forfeited and Canceled Shares [Member]
Earnings (Loss) per Share [Abstract]
Antidilutive securities excluded from EPS calculation (in shares)	0	257,799	0	257,799
Option to Purchase Common Stock, from Jensyn's IPO [Member] | Jensyn [Member]
Earnings (Loss) per Share [Abstract]
Antidilutive securities excluded from EPS calculation (in shares)	429,000	429,000	429,000	429,000
Private Warrants to Purchase Common Stock, from Jensyn's IPO [Member] | Jensyn [Member]
Earnings (Loss) per Share [Abstract]
Antidilutive securities excluded from EPS calculation (in shares)	34,572	2,292,250	34,572	2,292,250
Warrants to Purchase Common Stock from Solar Project Partners LLC Exchange and Subscription Agreement [Member] | Solar Project Partners, LLC [Member]
Earnings (Loss) per Share [Abstract]
Antidilutive securities excluded from EPS calculation (in shares)	0	275,000	0	275,000
Conversion of Preferred Stock to Common Stock from Green Seed Investors LLC Exchange and Subscription Agreement [Member] | Green Seed Investors, LLC [Member]
Earnings (Loss) per Share [Abstract]
Antidilutive securities excluded from EPS calculation (in shares)	0	370,370	0	370,370
Unvested Restricted Stock Awards [Member]
Earnings (Loss) per Share [Abstract]
Antidilutive securities excluded from EPS calculation (in shares)	160,667	0	160,667	0
Unvested Options to Purchase Common Stock [Member]
Earnings (Loss) per Share [Abstract]
Antidilutive securities excluded from EPS calculation (in shares)	201,334	0	201,334	0