The C40 has launched a new network – the Sustainable Urban Development Network - a group of urban leaders who are deploying replicable, scalable solutions for building the next generation of “green” cities.
A city mandate/ordinance requiring that all households meet certain building standards when they are sold, transferred or renovated. This city-wide ordinance with various specific measures has reduced residential energy consumption by over 13 percent, annually reduced CO2 emissions by over 5,000 tons and allowed households to save up to $450 US dollars on their energy bills.
The Seattle Justice Centre is 14-story building housing Seattle's municipal courts and police headquarters in a dense urban setting. Seattle mastered its design challenge to create distinct and unique identities for both the courts and the police headquarters within one sustainable building. It has unique features including: naturally vented "double skin" façade that allows light but minimizes heat, and a "green" roof with drought-resistant and low-maintenance plants that remove solar heat, stores rainwater and filters pollutants out of the air while returning some oxygen to the atmosphere. It cuts 816 tons of CO2 annually and $32,600 in avoided mitigation savings. Utility savings from reduced energy and water use total $113,4000 per year.