Document and Entity Information - shares	3 Months Ended
	Mar. 31, 2018	May 15, 2018
Document and Entity Information:
Entity Registrant Name	SUMMER ENERGY HOLDINGS INC
Document Type	10-Q
Document Period End Date	Mar. 31, 2018
Amendment Flag	false
Entity Central Index Key	0001396633
Current Fiscal Year End Date	--12-31
Entity Common Stock, Shares Outstanding		27,055,833
Entity Filer Category	Smaller Reporting Company
Entity Current Reporting Status	Yes
Entity Voluntary Filers	No
Entity Well-known Seasoned Issuer	No
Document Fiscal Year Focus	2018
Document Fiscal Period Focus	Q1
Trading Symbol	sume
Contained File Information, File Number	001-35496
Entity Incorporation, State Country Name	Nevada
Entity Address, Address Line One	5847 San Felipe Street, Suite 3700
Entity Address, Postal Zip Code	77057
City Area Code	713
Local Phone Number	375-2790