1. Energy Performance Certificates

2. Energy Efficiency Rating This chart tells us how energy efficient a building is. This efficiency depends on the construction of the building. In general, older buildings have a worse efficiency rating than a newer building because of the materials used to construct the building. Most buildings can be made more energy efficient by improving insulation.

3. Environmental (CO 2 Impact Rating This chart tells us about the amount of carbon dioxide gas released into the atmosphere through fuel and electricity use in a building. It is calculated from the fuel bills and the area of the building. Fuel bills can be reduced by improving the energy efficiency of the building and using solar panels on the roof or a small wind turbine in the grounds.