
Submerged in about 40 metres of water off Scotland's coast, a turbine has been spinning for more than six years to harness the power of ocean tides for electricity.
It is a mark of durability that demonstrates the technology's commercial viability.

Submerged in about 40 metres of water off Scotland's coast, a turbine has been spinning for more than six years to harness the power of ocean tides for electricity.
It is a mark of durability that demonstrates the technology's commercial viability.