Sorry, I'm a bit confused. Where did the first 5% come from if not electricity to run factories?

Also climate impact is more than just greenhouse gasses, water usage is huge and if it can be optimized can be a huge win.

I'm also not sure about your 10% figure, 25% is the first figure I stumble across, of which animal production for food consists of about 50%: https://ourworldindata.org/food-ghg-emissions