A critical component in reaching a net-zero city lies in the construction and retrofitting of energy-efficient buildings.

... but you must act as early as possible and not later than the start of the planning stage. Here is one example:  Integrated planning for land use and transportation and creating transit-oriented developments (TODs). Integrated planning for land use and transportation is a powerful approach for reducing carbon emissions in cities. By aligning the development land and transportation infrastructure, cities can promote sustainable urban growth, reduce reliance on private vehic