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.
Rapid rates of urbanization in much of the world will lead to an unprecedented expansion of the built environment. The choices being made today about how to build, design, and operate these buildings will affect urban services and livability for decades.
This chapter aims to update the knowledge on the building sector since the Intergovernmental Panel on Climate Change (IPCC) Fourth Assessment Report (AR4) from a mitigation perspective. Buildings and activities in buildings are responsible for a significant share of GHG emissions, but they are also the key to mitigation strategies.
This guidebook aims to be a practical resource for governments (ministries of energy, environment, housing, climate change, finance, planning and others), private sector investors and civil society organizations by illustrating how to create a Nationally Appropriate Mitigation Action (NAMA) for energy efficient buildings based on a country-led national strategy, possibly articulated as a Nation