These things seem to be popping up all over the place nowadays
Individual wind turbines, erected to supply environmentally friendly power to a specific building or business.
On a rather larger scale, the 24 Vestas WD34 wind turbines spread out along the moor by Long Causeway are Coal Clough, one of the oldest onshore wind farms to have been built in Britain (1992). Each tower is 98 feet high, plus has a blade length of 55 feet with which it generates up to 24,000 MW-h of electricity per year, enough to supply power to around 6,000 homes in neighbouring Burnley.
We first spotted this farm after our long ascent of Back o'th' Edge and thereafter, it repeatedly came into view as we twisted and turned along the route of our walk.
When I say 'larger scale' I am speaking relatively though. This wind farm is owned by Scottish Power and, in December 2009 they submitted an application to repower Coal Clough. The proposal is to replace the existing 24 turbines with just 8 new ones. However, what is sacrificed in numbers is made up for in size. Each of the 8 new turbines will have a total height of 361 feet; more than three times the total height of the current ones!
Opinion about wind turbines is split, but whatever your personal point of view, it would seem they are here to stay.