An unusual wave-power system that pumps high-pressure water to an onshore hydroelectric plant recently began feeding electricity into the U.K.’s national transmission system. The 315 kW “Oyster device” is the world’s only functioning hydroelectric wave-powered plant, claims its Edinburgh-based developer, Aquamarine Power Ltd. Slide Show Photo: Aquamarine Power Ltd. The 200-tonne 315-kW wave-power device was installed in Scotland for six months of full-scale demonstration trials. Related Links: Wave Power: Swells Drive Onshore Generator Finland’s WaveRoller Has Seabed Generator Oyster’s hydraulic pumping power is generated at the hinge of a seabed-mounted flap that moves with waves. The 10-m-long by 18-m-wide steel
The market is generally healthy and steadily growing, and margins are up for large specialty contractors. Further, advances in design tools and owner demand for collaboration are giving subcontractors a seat at the table early on in projects.