The new report by Wind Aware Ireland is now available to read online :
Total annual costs due to wind have been calculated at € 1.2 billion. I would say this is an under estimation. Other costs such as ancillary costs and maintenance costs for conventional generation are missing from this report. Ancillary costs are now over € 70 million per year. Some of those are required without wind, others like synchronous compensation are a direct consequence of wind energy.
I have to agree with economist Colm McCarthy when he says "It should not have been left to this voluntary group to raise these vital policy questions. "