Thanks for the very interesting article. I have one question/comment:

You write: "As stated above, Canada’s residential sector is expected to increase its natural gas usage by 0.5% per year. By 2010, this corresponds to a residential NG use of 1.87bcf/d up to 4.97bcf/d by 2030." The increase from 1,87 bcf/d to 4.97 BCF/d will only be reached if the annual growth rate is 5%. With 0.5% annual growth the consumption would go up to 2,07 bcf/d. I would also expect that with large price increases the residential consumption will stagnate or will be shrinking a bit.
However with nothing left for residential consumption because everything is going into US export or tar sand production this does not really make a difference.

Jörn Erbguth