
You can also build heating plants to generate heat locally, but you will need to upgrade your pipes to ones that can carry heat as well.

That can be through electricity, but they will consume probably two to three times their normal usage when it gets really cold.

Also bear in mind that on snowfall maps you need to provide heat to your citizens. The only truly important things are snow dumps, though I would recommend advancing far enough to unlock incinerators, so you don't have to worry about garbage as much.
