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BriefENERGY

Tidal Stream Energy Turbine Array TidalStream Deployed in Scotland: Underwater Turbines Generate Power from Ocean Currents

Ocean energy company OceanPower deploys first commercial tidal stream energy array TidalStream in Scotland's Pentland Firth, 8 underwater turbines generating 200MW from strong ocean currents, powering 250,000 homes

Ocean energy company OceanPower announced on March 19 that its TidalStream tidal stream energy system has completed deployment in Scotland's Pentland Firth and is officially connected to the grid.

TidalStream consists of 8 large underwater turbines, each with 25-meter diameter blades installed 30 meters below the surface. Pentland Firth currents reach speeds of 5 meters per second, driving turbine blade rotation for power generation. Total installed capacity is 200MW with annual generation estimated at 600GWh, sufficient for 250,000 households.

OceanPower CEO Fiona Campbell said: "Tidal stream energy's greatest advantage is predictability. Unlike wind and solar, tidal timing and intensity can be precisely predicted decades in advance."

Single TidalStream turbine manufacturing and installation costs approximately $25 million, with total 8-unit investment around 200 million pounds. At UK electricity prices, the payback period is approximately 12 years. OceanPower plans to expand TidalStream to French and Korean strait areas by 2032.