The National Calculation Methodology (NCM) for Section 6 2022 is out for use from December this year. This will reduce the carbon factor for grid electricity by circa 400%.
Since the introduction of the Minimum Energy Efficiency Standards (MEES) in England to an EPC ‘E’ for leases and the expected strengthening of this to EPC ‘B’ by 2030, the Scottish EPC methodology has come under some scrutiny.