People have built a net-positive energy house in the middle of Norway. It's mainly a matter of very good insulation, heat exchangers between outgoing and incomi

People have built a net-positive energy house in the middle of Norway. It's mainly a matter of very good insulation, heat exchangers between outgoing and incoming air, heat pumps, and rooftop solar. In most of these buildings the windows can't even be opened, all air flow is controlled by the central system. https://snohetta.com/project/60-powerhouse-at-brattorkaia https://snohetta.com/project/60-powerhouse-at-brattorkaia