309. EnergieSprong: Retrofitting 59 Homes to Net-Zero in Canada’s North

Buildings are responsible for 30-40% of greenhouse gas emissions. Edmonton builder Peter Amerongen is tackling this head-on by piloting the Dutch idea called EnergieSprong. New walls and roofs are built in a factory and craned onto old energy-inefficient homes transforming them all the way to net-zero. It’s the largest project of its kind in North America as 59 homes are being transformed to net-zero energy.