VQOTW: ENERGY SAVING MATERIALS

My client is planning major renovations to her home to make it more “eco-friendly”. This will involve the installation of a number of energy-saving materials such as solar panels, insulation, and an air source pump to provide both heating and cooling functions. However, she has heard there are imminent changes to the VAT treatment of such supplies and is concerned she may miss out on current VAT reliefs. Please could you clarify?