It's a good question. If I'm looking at Alberta natural gas, the stuff going to the Pacific northwest, there are limited natural gas resources in the Pacific northwest. We tend to buy from the Pacific northwest and the western system as a whole when the renewables are in abundance, because that's when prices are low. If you look at flows across the B.C. intertie, that tends to be when natural gas is not on the margin. Those are expensive time periods for the United States. We tend to be importing in the middle of the day when California has too much solar or when it's extremely windy.
