1. This is an ambition under the UK Renewable Transport Fuel Obligation (RTFO) - data is not available for Scotland separately, so the UK proportion is assumed.
2. This refers to figures that have been adjusted for inflation.
3. This excludes wind and solar generation as they are dependent on the weather.
5. Energy Performance Certificates (EPCs) provide information on how energy efficient a building is, and how it can be improved. Buildings are rated on a scale from A-G, with A being the most efficient and G the least efficient.