We're saved!: Navy could allegedly power more than 320 homes using 10 115-foot buoys

Question: Is the total amount of energy needed to gather the raw materials, manufacture, deploy and maintain these buoys and
associated transmission lines more than the total amount of energy ever generated by these buoys?

The Navy Finds Extra Power In The Waves Beneath Its Ships | Co.Exist: World changing ideas and innovation

The U.S.'s first utility-scale, commercial "wave park" is now moving through the final permitting stages. Located 2.5 miles offshore near Reedsport, Oregon, the park will generate about 1.5 megawatts, enough to power more than 320 homes, using 10 massive "PB150s," power buoys. The buoys, 115 feet tall, will float almost entirely under the surface. Only a small yellow buoy is seen from above. As waves roll past, the rise and fall of the buoys drives an internal generator, which sends electricity back to the mainland grid.