Overall Viability Testing of Core Strategy Policies - Public forum - Planning Advisory Service (PAS)

While I am acutely aware of the need to ensure that affordable housing policies have viability work to back them up, and that some folk have looked at the viability of renewable/sustainable construction, has anyone commissioned work to look at the viability of such polices en masse? I am interested to see if anyone has attempted to assess the viability of asking for, for example, X% Affordable Housing; X% renewable energy provision; Level X of the Code for Sustainable Homes; etc, in relation to all new development. Thank you.