Need to add an annual multiplier that accounts for the reduced electricity production caused by shading of the PV from trees, buildings etc. This would be calculated on site by a PV industry professional using sophisticated tools. Initially this would be applied to the detailed model by will need to be added to CFI in the future. Calculation equals Fshade = kWh-yr Shaded / kWh-yr Unshaded
I believe this is a duplication of work done to address tic #1012, which involved the addition of the new PVWSolarAccess (%) input for each PV array - checked into SVN r1631 (1/19/20)
I agree with Scott that this is the Solar Access % which is done.