For compliance with criterion 18 (GRIHA Version 3) in GRIHA V 3.1, is it mandatory to have 1% of the exterior lighting connected to the renewable energy generation system?

Query

For compliance with criterion 18 (GRIHA Version 3) in GRIHA V 3.1, is it mandatory to have 1% of the exterior lighting connected to the renewable energy generation system?

Solution

The intent of criterion 18 (GRIHA Version 3) in GRIHA V3.1 is to generate electricity equivalent to 1% of connected load of interior lighting + exterior lighting + space conditioning. It is not necessary to utilize the generated electricity for the above mentioned applications. The generated electricity may be utilized anywhere and may even be fed into the power grid.