There's [1] but I'm not impressed by the efficiency numbers. Also, no need to go through electricity. Significant part of my city is heated by waste heat of po

There's [1] but I'm not impressed by the efficiency numbers. Also, no need to go through electricity. Significant part of my city is heated by waste heat of power plant that would otherwise go out the cooling tower. [1] https://en.m.wikipedia.org/wiki/Power-to-gas https://en.m.wikipedia.org/wiki/Power-to-gas