The best energy rating is a 10 star energy rating. However, it is very expensive to achieve a 10 star rating. NCC 2019 requires a building to achieve at least a 6 star energy rating. Under NCC 2022 a 7 star energy rating is the minimum.
The best energy rating is a 10 star energy rating. However, it is very expensive to achieve a 10 star rating. NCC 2019 requires a building to achieve at least a 6 star energy rating. Under NCC 2022 a 7 star energy rating is the minimum.