More than 23,000 people turned out for this month’s American Wind Energy Association annual conference and exhibition. That was up from 13,000 last year and 1,000 in 2001. There is no doubt interest in wind energy is growing in the US.

Indeed, the US has overtaken Germany to become the world’s biggest generator of wind energy. With the Obama Administration having just finalised a framework for renewable energy production offshore, the use of wind energy across the US is expected to grow further.