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Copenhagen, Oslo, and Stockholm released a joint pledge to reduce the greenhouse have emissions and air pollution from construction sites, in the effort to solve the climate crisis and improve public health. Six are the key areas to reduce the climate impact of construction in cities:- Implementing efficiency in material design- Enhancing existing building utilisation- Switching high-emission materials to sustainable timber where appropriate- Using lower-carbon cement- Reusing building materials and components- Using low, or zero-emission construction machinery (Source: C40's Clean Construction Policy Explorer)

Commitment to Clean Construction in Nordic cities

The Hammarby Sjöstad district in Stockholm was designed around the closed-loop metabolism concept, which embraces synergies among water, energy, and transportation services. The district is heated by purified waste water, combustion of household waste and biofuel; once heat has been extracted from waste water, it is used for cooling. The biogas produced is used to run local transit.