v3.26.3
Document and Entity Information - shares
9 Months Ended
Sep. 30, 2026
Nov. 04, 2026
Document and Entity Information    
Document Type 10-Q  
Document Quarterly Report true  
Document Period End Date Sep. 30, 2026  
Document Transition Report false  
Securities Act File Number 1-34392  
Entity Registrant Name PLUG POWER INC  
Entity Incorporation, State or Country Code DE  
Entity Tax Identification Number 22-3672377  
Title of 12(b) Security Common Stock, par value $.01 per share  
Trading Symbol PLUG  
Security Exchange Name NASDAQ  
Entity Address, Address Line One 125 VISTA BOULEVARD  
Entity Address, City or Town SLINGERLANDS  
Entity Address, State or Province NY  
Entity Address, Postal Zip Code 12159  
City Area Code 518  
Local Phone Number 782-7700  
Entity Current Reporting Status Yes  
Entity Interactive Data Current Yes  
Entity Filer Category Large Accelerated Filer  
Entity Small Business false  
Entity Emerging Growth Company false  
Entity Shell Company false  
Entity Common Stock, Shares Outstanding   1,398,871,823
Entity Central Index Key 0001093691  
Current Fiscal Year End Date --12-31  
Document Fiscal Year Focus 2026  
Document Fiscal Period Focus Q3  
Amendment Flag false