Edinburgh-based tidal energy company Nova Innovation has doubled the size of its Shetland-based array.
In 2016, the array of three underwater tidal turbines was the first of its kind and has been powering homes and businesses in Shetland ever since.
A fourth turbine (Eunice) was added in 2020. Now, with the installation of the fifth and sixth turbines, it becomes the array with the largest number of turbines anywhere in the world.
