can be pushed off course, such is the demarcation between the relatively calm eddy and the fast-moving tide in the races. There are other races in the firth particularly off Brough Head.

Tidal power

Currents of up to 5 m/s make the Pentland Firth potentially one of the best sites in the world for tidal power. This has taken on a political dimension. The SNP Energy Review of July 2006 claimed that the Firth could produce "10 to 20 GW of synchronous

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