I think we should preferably get away from the colours and focus on the carbon intensity. That's the factor that we want. We want low life-cycle carbon intensity.
I would argue that—and this is happening around the world—standards are being developed and defined for the carbon intensity of hydrogen, and Canada should insist that life-cycle carbon emissions have to be below a certain level.
There is a European study. It's called CertifHy. It has identified, I think, 36.4 grams of CO2 per megajoule lower heat value hydrogen, and that is the maximum carbon intensity. I think that's a good place to start. I think we need to even lower that carbon intensity that we allow from a life-cycle basis as years go on as we move towards 2050.
Green electricity made from wind, solar or large hydro can meet that standard. So can blue electricity made from steam methane reforming or auto-thermal reforming with carbon capture and storage.
I think what we need to do is set a standard. The Canadian Standards Association is looking at this now, and there is an international committee. I think Canada should be encouraging that and coming up with a standard for quality similar to what has been talked about for biofuels for low-carbon emissions on biofuels. I think that's critical.