Roger asked about wind conditions, “I’d like to see the output from the site anenometer so we knew what windspeeds were up there when it went down.” … can’t do that but I can dig…

Bing aerial images of wind farm

A question arises on whether the rotor assembly was damaged during icing conditions, later failing under relatively simple conditions. Water ingress into composite blades is also possible.

SNOW, dated 11th December 2014 at a Met Office site not far away. The Met Office communications failed, quite common with Met Office sites. The wind at the 300 metre ground altitude Screggagh wind farm will have been faster, more so at hub height. Other met sites had snow and rain, wet conditions with a wind.