v3.26.1
Cover
Jun. 29, 2026
Document Type 8-K
Amendment Flag false
Document Period End Date Jun. 29, 2026
Current Fiscal Year End Date --04-30
Entity File Number 001-33417
Entity Registrant Name OCEAN POWER TECHNOLOGIES, INC.
Entity Central Index Key 0001378140
Entity Tax Identification Number 22-2535818
Entity Incorporation, State or Country Code DE
Entity Address, Address Line One 28 Engelhard Drive
Entity Address, Address Line Two Suite B
Entity Address, City or Town Monroe Township
Entity Address, State or Province NJ
Entity Address, Postal Zip Code 08831
City Area Code (609)
Local Phone Number 730-0400
Written Communications false
Soliciting Material false
Pre-commencement Tender Offer false
Pre-commencement Issuer Tender Offer false
Entity Emerging Growth Company false
Common Stock, $0.001 par value  
Title of 12(b) Security Common Stock, $0.001 par value
Trading Symbol OPTT
Security Exchange Name NYSEAMER
Preferred Stock Purchase Rights  
Title of 12(b) Security Preferred Stock Purchase Rights
Trading Symbol N/A
Security Exchange Name NYSEAMER