# Energy Rating Classes

*Act on Energy Declarations for Buildings (2006:985), Boverket regulations BFS 2017:6*

## Definition

Energy rating of homes is done on a scale from A to G, where A represents the most energy-efficient buildings and G the least efficient. The classification is based on the building's primary energy figure — total energy use per sqm per year, expressed in kWh/sqm. The rating appears on the energy declaration prepared by a certified energy expert.

For housing seekers, the energy class provides a quick indication of future energy costs. A property rated A-B typically has well-insulated walls, modern windows, and efficient ventilation, while class F-G often indicates older buildings with poor insulation. The EU Energy Performance of Buildings Directive drives development toward better energy performance in the building stock, and requirements to upgrade the worst-performing buildings are being discussed.

## Key points

- Scale from A (best) to G (worst) based on primary energy figure (kWh/sqm/year)
- Shown on the energy declaration prepared by a certified energy expert
- Class A-B means well-insulated with modern installations
- Class F-G indicates older buildings with high energy consumption
- EU directives drive requirements for improved energy performance in building stock

## Practical tip

Always compare energy classes when choosing between homes — the difference in heating costs can be thousands of SEK per year. A property rated C-D can be a good compromise between price and energy efficiency. Also think ahead: properties with poor energy ratings may be forced to implement expensive measures in the future.

## Legal basis

Act on Energy Declarations for Buildings (2006:985), Boverket regulations BFS 2017:6