In terms of hydrogen, you hear a lot about colours. There's green from solar renewable energy and blue made from natural gas. With CCUS, you can achieve over 90% emissions-free hydrogen, which is, in terms of the life cycle, similar to or better than solar-generated. We do both in Perth. We think it plays a role.
Right now it's cost, but as the carbon tax increases, there's a break-even point that occurs around 2028, when with the price of natural gas with the carbon tax, it will be cheaper or the same price to use hydrogen rather than natural gas.
Right now, it would be more expensive, but if you're a large oil company and you are using it for industrial purposes, with the offsets, credits and ITCs that are applied, it's already competitive. We believe, with the government's investment tax credits—if we can get clarity on the contracts for differences—and these other tools, it is something that you could use even now.