Energy use in buildings and for building construction represents more than one-third of global final energy consumption and contributes to nearly one-quarter of greenhouse gases (GHG) emissions worldwide. A growing population, as well as rapid growth in purchasing power in emerging economies and developing countries, means that energy demand in buildings could increase by 50% by 2050, while global building floor area is expected to double by 2050, driving energy demand and related GHG emissio
Without strong and ambitious policy support, the energy efficiency potential of cities is likely to remain largely untapped. Often cities have the opportunity to implement policies and programmes in the building sector that are complementary, more stringent or reflect greater ambition than national activities.
Two major international agreements reached in 2015 will be guiding the future energy development patterns in all sectors, including industry. At the United Nations General Assembly in September 2015, global leaders adopted 17 Sustainable Development Goals to mobilise efforts to end all forms of poverty, fight inequalities and tackle climate change by 2030.