Stirling Council has supplementary guidance on Energy Efficiency and Micro-renewables and their impact on the historic environment, it contains a sequence of alterations which provides advice to follow prior to considering installing any micro-renewables, if you’re interested it’s section 3, in particular section 3.7

http://www.stirling.gov.uk/__documents/temporary-uploads/economy,-planning-_and_-regulation/approved-ldp/sg-teith-house-jan-2015/sg20-historic-environment_energy-efficiencyrenewables_feb-2015.pdf