The focus is on achieving the lowest carbon concentration possible with respect to the generation of hydrogen. We've framed our approach not so much on colours as on basically carbon intensity. That is a technological question, as to how you reduce the carbon intensity of the fuel. The technology is already advanced pretty materially. Over the course of the last period of time, we've gone to a higher heat application of separation of the molecules to create the hydrogen. If you combine that with capturing the methane at source, it gets you a very low-carbon-intensity product.
The investments that are being made by some of our partners, particularly the investments through the recent United States legislation, create a real dynamic here that we are mindful of. We have been making substantial investments ourselves, both in terms of our own tax measures and in terms of direct investments through the clean fuels fund and other mechanisms. It is with a view to that kind of technological evolution. We're seeing the results of that to a degree.