Okinawa Prefecture Deep Sea Water Power Generation

Demonstration Project

OTEC Pilot Plant

Welcome to the Okinawa Prefecture Deep Sea Water Ocean Thermal Energy Conversion (OTEC) Demonstration Facility. Here you'll find a collection of information on this historic project, as well as information on OTEC technology, news, and posts from facility staff. Join us in exploring this exciting path into the future.

Hours of Operation

Monday through Friday


(Except National Holidays)

We request that parties interested in visiting the facility make an appointment to ensure a guide is available. We have guides available that speak Japanese and native English. We will also work to honor special requests for tours on Saturday and Sunday.

OTEC Pamphlet

Pamphlet Cover

Click the image above to download a pdf copy of our informational pamphlet.

Visitors to OTEC Okinawa will recieve a printed copy.

Current Surface Seawater Temperature


Current Deep Seawater Temperature


(Updated 5/27/2020)

©2013-2020 Okinawa Prefecture.