Heating (and hot water), transportation, industry (which to be fair is also often heating). You can't make cement for instance with electricity, you can't produ

Heating (and hot water), transportation, industry (which to be fair is also often heating). You can't make cement for instance with electricity, you can't produce enough heat, you need gas (or coal). You can use the electricity to make hydrogen and use that for heat, but then your electricity needs to be really cheap/free, because gas isn't actually that expensive.