Document and Entity Information	6 Months Ended
	Jun. 30, 2012	Aug. 06, 2012
Document and Entity Information [Abstract]
Entity Registrant Name	PLUG POWER INC
Entity Central Index Key	0001093691
Trading Symbol	plug
Entity Current Reporting Status	Yes
Entity Voluntary Filers	No
Current Fiscal Year End Date	--12-31
Entity Filer Category	Non-accelerated Filer
Entity Well-Known Seasoned Issuer	No
Entity Common Stock, Shares Outstanding		37,981,961
Document Type	10-Q
Document Period End Date	Jun. 30, 2012
Amendment Flag	false
Document Fiscal Year Focus	2012
Document Fiscal Period Focus	Q2