But will the lights stay on?

Heading down for Supergran's birthday - she's 87 on Friday and still emailing every day - when we stopped of to look at these.

I really like them. Personally I think they look epic in a landscape and don't have any problems with big farms. Anythings got to be better than nuclear but I do have this niggle at the back of my mind that when 'push comes to shove' they lights might not stay on for too long.