How cool is this, they have been talking about tidal energy for years and now the first two turbines have been connected to the UK's national grid. It is also scalable meaning they will be able to add more turbines as time goes by. 

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Bet they're pricey for the lecky they give but hey, you have to start somewhere.

Scaling up should reduce costs and being composite blades should be good on corrosion and maintenance. Found this article, looks like they've been having problems with the 30kW version.

But looking hopeful.

Oh, I think it does work but early days. At the moment the 2 turbines are putting out 1.3 million watts.


Info found on this site:
http://renewables-map.co.uk/

I think you might be right Snowy, I can't find Bluemull Sound turbines on the map either but I can find the total tidal power out-put.

Total Capacity shown in MW = 1.3    Total Installations shown = 2

And it's still showing today, if you navigate to Wave & Tidal Energy then drill down to "Active and Currently Generating".