Again, I think there are two strategies. For new housing developments, I think we really ought to look at integrated energy systems. For existing homes, I think there are a number of technologies available now, as Andrew already pointed out, such as high-efficiency furnaces, on-demand water heaters, solar hot water, geothermal systems. There's a whole range of technologies available now to Canadians to put in their homes.
Incentivizing those types of technologies is already happening, through the federal program for homeowners to do audits of existing homes to identify exactly where the problems are in their homes and then target their dollars, very strategically because the dollars are limited, to put things into their houses that will actually help them reduce their energy bill. I think that's key to success. There are just so many homes that are 60, 70, 80, 90, 100 years old, and you will never get a house that's 100 years old to the same level of energy performance as you could build today, but you'll still be able to get it down relatively, to help reduce energy demand.
So there are two different strategies. One is for new community developments and one is for existing homes. We have to treat them differently and we have to incentivize it differently.