Energy audit is the periodic examination of an energy system to increase its efficiency.
A solar system converts sunlight into an electric current which is used to provide electricity.
Rain water harvesting is a technique of collection and storage of rainwater into tanks.
A biogas plant is where biogas is produced. Biogas Reduces Pollution.
A cool roof is a roofing system that delivers higher solar reflectance.
A terrace garden is a garden which is established on a terrace, roof.