Today Streymoy and Hestur islands are connected by a ferry, but such travel was impossible for most of their history. For centuries, life on Hestur, a small Faroese island located halfway between Scotland and Iceland in the northeast Atlantic, was isolated: Streymoy, the biggest of the 18 islands that comprise the Faroe Islands, is almost ironically close, within eyeshot, but powerful currents in the fjord dividing the two islands long made travel between them difficult.
But the project is still undergoing an environmental impact survey — and some researchers and residents are concerned that harnessing the island nation’s tidal power may come at a cost.The economy of the Faroe Islands has been built primarily on the open sea and in its fjords: Up to 90 percent of its export value, and around 20 percent of its gross domestic products , comes from fishing or fish-farming.
Finding the right supplier of tidal energy wasn’t easy. But in 2018, representatives from Minesto met with SEV at a conference in London and instantly saw the possibilities of a potential partnership. The two parties signed a contract for cooperation, with SEV pledging to buy energy from Minesto at a fixed price and provide research while Minesto tested its turbines in the ocean.
The turbines are called “dragons,” but look more like kites, and come in different lengths: The most vigorously tested in the Faroe Islands has a wingspan of over 16 feet, but a newer model is more than double that, at nearly 40 feet long. The devices travel in a figure-eight trajectory. This movement pulls them through the water much faster than the speed at which currents are flowing, generating energy that is transmitted via power cables to shore.
Scott also says she is “a little concerned” about the Minesto kites versus other types of tidal turbines because they are faster and move in the midwater column, as opposed to being predictably in just one location on the seafloor. She worries that marine mammals could be injured if they are hit by the turbine. “We don’t know if animals, such as seals, can avoid them by changing their behavior farther away or closer to the kites,” she says.