I just want to respond, Mr. Cullen, to your point on the relationship between gas renewables versus hydro and renewables.
Could I just give you a hypothetical about system efficiency? I don't have the graph with me, but there was a graph from the Independent Electricity System Operator of Ontario that showed 4 p.m. one day and 4 p.m. two days later. There was a 1,000 megawatt difference in the available power from wind because of its intermittency at the same time of day two days later. That's fine, wind is an intermittent power source, and there are ways to deal with that. But what you need to do, if you're using it as part of a reliable power system, is have firm backup readily available. So if it's hydro, which is the most logical partner—you're right, in my view—that means you have to set aside 1,000 megawatts of hydro as spinning reserve, ready to go immediately, to be available. That's 1,000 megawatts of hydro you're not using in the market.
It's better to be using hydro as electricity, sending it into the electricity system, and generating revenues in export markets or other provincial markets than holding it in reserve like that.
With natural gas it's a different scenario, because you tend to hold natural gas in power generation in facilities that are designed precisely for that sort of immediate backup opportunity. It's not as efficient to use natural gas for electricity in the long term for exports the way it is for hydro, so you want to be thinking about system efficiencies on these things at all times instead of having absolutes about what is all good and what is all bad.