There is strong scientific evidence that the Earth’s average surface temperature is increasing. This is a result of the increased concentration of CO2 and other greenhouse gas emissions in the atmosphere, due to burning fossil fuels. This will eventually lead to major changes in the climate of the atmosphere, which in turn will have a major impact on human life and the built environment. Therefore, efforts should be made to reduce the use of fossil energy and promote renewable energy, especially in the building and construction sectors. This chapter is dedicated to examining the importance of renewable energy resources and how to use them in buildings to improve their energy flexibility characteristics. The renewable energies considered in this chapter include wind energy, solar energy, geothermal energy, and biomass energy.
