The Tide Is Turning For A New Source Of Green Energy
The first underwater turbines are connected to Scotland’s power grid.
A tidal energy turbine is loaded onto a barge in Invergordon, Scotland.
Two turbines installed off Scotland’s coast aren’t harnessing the country’s winds to generate power. Instead, these blades are spinning underwater, using an even more predictable renewable power source in the region—tides.
The offshore array is the world’s first network of tidal turbines to deliver electricity to the power grid, according to Nova Innovation, the company behind the development.
That’s a big step for green power generation, as it shows commercial viability for a marine-based power source to create renewable energy. Unlike solar and wind power, where power production stops when the sun isn’t shining or when the wind stops blowing, Nova’s tidal arrays continuously generate electricity by using perpetual incoming and outgoing tidal currents to spin its underwater turbines 24 hours a day, 365 days a year.
“We are absolutely delighted to be the first company in the world to deploy a fully operational tidal array,” said Simon Forrest, managing director of Nova Innovations. “Deploying the second turbine truly sets us apart and showcases our technology.”
So far, two 100-kilowatt turbines have been installed in the turbulent tidal stream of Bluemull Sound off the Shetland Islands—an archipelago about 120 miles north of mainland United Kingdom, where the North Sea meets the Atlantic Ocean. Nova is planning to construct five turbines in the region, providing power to residents and businesses on the Shetland Islands.
The islands aren’t connected to the U.K. grid, so its 23,000 residents rely on a diesel-fueled power station for most of their electricity. The 0.5 megawatts expected to come online from the underwater turbines would minimize the need for the tanker-supplied fossil fuels.
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