Approximately 71% of residential buildings use NatHERS star rating as a way to demonstrate energy efficiency compliance with the National Construction Code. To obtain a building permit, one of the required documents is an energy report. There are several ways to obtain this:
- Elemental approach
- Performance Solution
- NatHERS star rating
Among them, NatHERS presents a scheme to rate residential buildings based on their energy demand for space heating and cooling.