Cover - USD ($)	12 Months Ended
Cover - USD ($)	Dec. 31, 2023	Mar. 31, 2024
Cover [Abstract]
Document Type	10-K/A
Amendment Flag	true
Amendment Description	iSun, Inc. (“we,” “us,” “our,” the “Company,” or “iSun”) is filing this Amendment No. 1 on Form 10-K/A (“Amendment No. 1”) to amend our Annual Report on Form 10-K for the fiscal year ended December 31, 2023 (“Original Form 10-K”), filed with the U.S. Securities and Exchange Commission (“SEC”) on April 16, 2024 (“Original Filing Date”), to include the information required by Items 10 through 14 of Part III of Form 10-K. This information was previously omitted from the Original Filing in reliance on General Instruction G(3) to Form 10-K
Document Annual Report	true
Document Transition Report	false
Document Period End Date	Dec. 31, 2023
Document Fiscal Period Focus	FY
Document Fiscal Year Focus	2023
Current Fiscal Year End Date	--12-31
Entity File Number	001-37707
Entity Registrant Name	iSUN, INC.
Entity Central Index Key	0001634447
Entity Tax Identification Number	47-2150172
Entity Incorporation, State or Country Code	DE
Entity Address, Address Line One	400 Avenue D
Entity Address, Address Line Two	Suite 10
Entity Address, City or Town	Williston
Entity Address, State or Province	VT
Entity Address, Postal Zip Code	05495
City Area Code	(802)
Local Phone Number	658-3378
Title of 12(b) Security	Common Stock, $0.0001 par value
Trading Symbol	ISUN
Security Exchange Name	NASDAQ
Entity Well-known Seasoned Issuer	No
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Non-accelerated Filer
Entity Small Business	true
Entity Emerging Growth Company	true
Elected Not To Use the Extended Transition Period	false
Entity Shell Company	false
Entity Public Float		$ 11,527,776
Entity Common Stock, Shares Outstanding		47,384,672
Documents Incorporated by Reference	None
ICFR Auditor Attestation Flag	true
Document Financial Statement Error Correction [Flag]	false
Auditor Name	Marcum LLP
Auditor Location	New York, NY
Auditor Firm ID	688

ISUN, INC. 10-K/A