Hi Chromodoris,
I live just up the road from the proposed Whinash wind farm-
See
http://www.bbc.co.uk/cumbria/content/articles/2005/04/15/windfarms_feature.shtml
and
http://www.nowhinashwindfarm.co.uk/
Most of the locals' opposition around here seems to be based on concerns over house devaluation and spoiling the view, which is a bit depressing really.
I havn't followed the debate that closely but a couple of things that have stuck with me are
1, the infrastructure they need to put in to erect and maintain the turbines is massive and will have an enormous effect on the flora, fauna and of course any archaeology.
2, if industry was forced to cut its Waste of energy (that's Waste, not Use) by 20% there would be no need for any more power stations of any kind (at least at the moment).
That second is a statistic that was being bandied about and maybe its not true, but it certainly puts into focus that really what is going on here is not an investment in sustainability, but an investment in yet more economic growth.
That alone is enough to convince me against it.
Anyway you can have a look at what the campaign against has been up to here and maybe you'll get some ideas.
Best of luck