It's mid-term, but I think solar is going to be the most useful area. Wind power right now is mature and it simply needs those incentives. In Quebec, we've proposed that 15,000 megawatts could be developed over the next 10 years. The government has decided to limit it to four. It's a policy decision rather than one that's based on economics, as far as I can tell. Biofuels are clearly interesting. There's a risk there. Ethanol from corn, whether it's positive or negative--it depends on which study you read--but I think the honest way to come out of reading the studies is it's ultimately neutral. There's no gain, probably, or not much gain with ethanol from corn. But other kinds of ethanol are interesting. The government in Quebec is planning to do research, but it's not ready yet.
On October 31st, 2006. See this statement in context.