Rob,
I am not sure when the NWT Biomass Energy Strategy 2012-2015 will be updated again, but it would seem that since it is 2015, an update would be required in the near future. The air quality concerns you’ve identified don’t seem to be as widespread for the majority of the small, remote communities of the NWT. This would be more of a concern in Yellowknife & perhaps Hay River or Inuvik.
The Energy Efficiency Incentive Program that the Arctic Energy Alliance administers on behalf of the GNWT, offers rebates of 1/3 the purchase price up to $700 for EPA/ULC certified wood & pellet stoves: http://aea.nt.ca/files/download/3a82c8a538f3997 or http://aea.nt.ca/programs/energy-efficiency-incentive-program
So, a greater number of cleaner burning wood heating appliances are in use as a result of the rebates that folks are tapping into.
