Cover - shares	9 Months Ended
	Sep. 30, 2024	Nov. 19, 2024
Cover [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Quarterly Report	true
Document Transition Report	false
Document Period End Date	Sep. 30, 2024
Document Fiscal Period Focus	Q3
Document Fiscal Year Focus	2024
Current Fiscal Year End Date	--12-31
Entity File Number	001-41395
Entity Registrant Name	BRIGHT GREEN CORPORATION
Entity Central Index Key	0001886799
Entity Tax Identification Number	83-4600841
Entity Incorporation, State or Country Code	DE
Entity Address, Address Line One	1033 George Hanosh Boulevard
Entity Address, City or Town	Grants
Entity Address, State or Province	NM
Entity Address, Postal Zip Code	87020
City Area Code	(833)
Local Phone Number	658-1799
Title of 12(b) Security	Common Stock, par value $0.0001 per share
Trading Symbol	BGXX
Security Exchange Name	NASDAQ
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 Common Stock, Shares Outstanding		191,166,318
Entity Information, Former Legal or Registered Name	Not Applicable