The Minimum Energy Efficiency Standards has been designed to prevent landlords renting spaces that are classified as ‘Sub-Standard’. A Sub-Standard building or unit is defined as having an EPC rating of an F or G. This classification is set to be increased to an E in the not too distant future, so landlords should be aiming for at least a D rating.

Further information on MEES can be found on the government website:
https://www.gov.uk/government/publications/non-domestic-private-rented-property-minimum-energy-efficiency-standard-landlord-guidance