Bluemull Sound

Bluemull Sound is the strait between Unst and Yell in Shetland's North Isles.

Cullivoe is on the Yell side, and the island of Linga lies in the strait.

The "world's first community-owned tidal power generator" became operational in Bluemull Sound in April 2014.

The turbine is a 30 kW Nova Innovation device, owned by the North Yell Development Council[4] and was connected to the local grid by 1 km subsea cable; helping power an ice house and up to 30 local homes.

[6] However, the three oldest turbines were removed just months later at the end of the EnFAIT project[7] leaving the array at just 0.3 MW.