6KW turbines have been permitted in other National Parks, mine was, as far as I know, the second successful application in the Lake District (with a 15m tower, the other being 9m) and there have been approvals in Northumbria National Park. I suggest that you search through National Park Planning applications/decisions on their web sites and let North Yorks Moors know that they are out of step with other national Parks.
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Simonridout