Following MPAC’s review, it was concluded that 2012 CVAs of properties located within proximity of an IWT are assessed at their current value and are equitably assessed in relation to homes at greater distances. No adjustments are required for 2012 CVAs. This finding is consistent with MPAC’s 2008 CVA report.
I'll give the thing a good read, and may write more on it later. But this result should be unsurprising. In almost every case where MPAC has been taken to the Assessment Review Board on this issue, the same determination has been made. Wind turbines do not bring down the value of adjacent properties. This one can serve as an example. What the MPAC study shows is that, overall, their assessors know their job.