Our project has 85% of parking covered by the building, but on the roof we have a vegetated area and solar panels. In the credit of Heat Island Reduction can we opt for Option 1?
Sorry for the delayed response on this; hopefully it will still be helpful for people.
Yes, I believe your project could opt to pursue Option 1 using the weighted calcs. The area covered by solar panels would not be included in the calcs since it's exempt (it does not hurt your calculations).