Commercial Energy Performance Certificates (EPC) are energy surveys that determine how energy-efficient buildings or commercial premises are. The ratings on a commercial EPC start from G (least energy efficient) through to an A being the most energy-efficient.
It is a legal requirement to have a valid Energy Performance Certificate (EPC) when a building is sold, rented or constructed. A property's EPC needs to be available to potential buyers as soon as they start to market a property for sale or to rent. If you are considering renting a property from a landlord or letting agent they must show you a valid EPC as it is against the law to advertise a property for rent without one.
As of April 2018, it became unlawful for a landlord to let a commercial property with an F or G EPC rating (unless there is a valid exemption).
Improving your EPC rating will decrease your commercial or business property's energy bills and overall running costs so it is always something you should consider if you are renovating or developing a property whether you rent, lease or own it.