Energy resources that are naturally replenishing but flow-limited. They are virtually inexhaustible in duration but limited in the amount of energy that is available per unit of time. Renewable energy resources include biomass, hydro, geothermal, solar, wind, ocean thermal, wave action and tidal action. An energy-efficient building where, on a source energy basis, the actual annual delivered energy is less than or equal to the on-site renewable exported energy.

2.  Promote innovation
 Enhancing quality & affordability
 Promoting high standards for building industry
 HVAC-technology provide thermal comfort and
acceptable indoor air quality
 Minimize energy use
 Apply renewable energy resources

12.  With the advancement in renewable technology, the most cost-
effective step towards reduction in a building's energy
consumption usually occurs during the design process
 Few governments are also providing subsidies to individuals
and organizations for creating Zero Energy Buildings.
 The goal of zero energy buildings would not be fulfilled till
the time all the people don’t understand their responsibility
and contribute towards reducing energy consumption.