Nicola Sturgeon has been challenged to explain who will pay the eye-watering bill for retrofitting one million homes in Scotland under her government's ambitious Net Zero plans.
The First Minister admitted today the number of buildings that require significant work to meet strict environmental standards meant it was "one of the most significant and difficult challenges we face".
Under Scottish Government plans, more than one million homes and an estimated 50,000 non-domestic buildings should be using low and zero emissions heating systems by 2030.
