Right out of the gate, I think of the variable cost of oil. If you want to encourage convert to another fuel source, you have to be able to incentivize the end user. At this point there's very little incentive to convert over. Most do it simply based on economic modelling. There are a few who do it for environmental purposes.
At the end of the day, most people require some type of incentive to do that. At this point, there isn't very much incentive in the north to do that, from our experience in the Yukon.