The section discusses how four cities – Calgary, Edmonton, Minneapolis, and Vancouver – are approaching the challenge of accommodating more people in existing neighborhoods while reducing infrastructure costs, transport emissions, and building energy use. Calgary initially made a citywide move to allow for more housing diversity but later reversed it due to political backlash. The most effective emissions reductions come from adding homes in location-efficient, transit-supportive, walkable neighborhoods. The article emphasizes the importance of building energy-efficient, compact, mixed-use developments close to transit and amenities to reduce vehicle miles traveled, energy use, and CO2 emissions. Edmonton's zoning bylaw renewal focused on compact growth and climate implications, resulting in a reduction in greenhouse gas emissions. Minneapolis implemented zoning reform in 2019 allowing up to three units on low-density lots as part of a comprehensive plan to reduce greenhouse gas emissions from transportation. Vancouver has a more aggressive approach, allowing up to six dwelling units on a single lot and requiring zero-emissions equipment for heating in new buildings. The overall message is that comprehensive and integrated policies are needed to ensure low-carbon and politically durable urban development, with a focus on infill development, zero-emissions buildings, and strong transport policy.
https://cleantechnica.com/2026/04/10/a-tale-of-four-cities-on-infill-emissions-political-nerve/