So whether the price is set by a limit or whether it bounces up and down is a second order issue to the emitter. To the latter it's about how much you have to pay and the real issue is our competitiveness with other countries and our competitors.
So the Alberta policy set stretch targets, such as performance that's better than industry is expected to do, and then they said you can pay up, at $15 a tonne, into a technology fund and we'll use that money to advance technology. That's the essence of that policy.