0001378140 2024-09-06 2024-09-06 0001378140 dei:BusinessContactMember 2024-09-06 2024-09-06 iso4217:USD shares iso4217:USD shares true 0001378140 S-3/A Amendment No. 1 Ocean Power Technologies, Inc. DE 22-2535818 28 Engelhard Drive Suite B Monroe Township NJ 08831 (609) 730-0400 Philipp Stratmann 28 Engelhard Drive Suite B Monroe Township NJ 08831 (609) 730-0400 Non-accelerated Filer true false