Document and Entity Information	6 Months Ended
	Jun. 30, 2012
Document and Entity Information [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Jun. 30, 2012
Entity Registrant Name	RIDGEWOOD ELECTRIC POWER TRUST V
Entity Central Index Key	0001060755
Current Fiscal Year End Date	--12-31
Document Fiscal Year Focus	2012
Document Fiscal Period Focus	Q2
Entity Filer Category	Smaller Reporting Company
Entity Common Stock, Shares Outstanding	932.8877