> The studies show that using renewable electricity to first make hydrogen with electrolysis, and then using the hydrogen to heat spaces is less efficient than

> The studies show that using renewable electricity to first make hydrogen with electrolysis, and then using the hydrogen to heat spaces is less efficient than using the electricity to directly power a heat pump. Wow, such geniuses they are, to come to this finding. /s One doesn't need to do the tiniest bit of experiment to know this. What these people don't seem to understand: an electric grid is a vulnerable system that constantly needs to be kept in balance by active measures, or it will break down. See current situation in Europe, where reports/discussions about grid stability have suddenly become quite frequent, as if it hadn't been obvious for years if not decades that simply building out renewables without adding buffer capacity, will inevitably lead to instability. So, hydrogen for home heating doesn't merely serve the purpose to transport energy where it's needed. No, it also serves the purpose that's becoming more and more important: buffering/storing energy so generation of electricity/energy and its use can be temporally decoupled (at the scale of months). Unless an electric grid has ample storage capacity attached to it, generation and demand have to be mostly synchronous, which just doesn't reflect physical (weather/climate) reality. Try using solar energy for heating homes via heat pumps in winter in northern Europe. You'll have to have a really well insulated home to pull that off.