8 terms:


A type of support scheme for electricity generators, whereby generators obtain a long term guaranteed price for the output they deliver to the grid.

Fischer- Tropsch (FT) process

Catalytic production process for the production of synthetic fuels. Natural gas, coal and biomass feedstocks can be used either in gasification or reforming processes.

Fluorinated Gases (F-gases)

Family of greenhouse gases containing fluorine. Hydrofluorocarbons (HFCs), perfluorocarbons (PFCs), sulphur hexafluoride (SF6) are used in industrial processes, refrigeration and air conditioning. They generally have high Global Warming Potentials.

Flywheel hybrid

A hybrid vehicle that uses a high speed carbon fibre flywheel that stores and releases energy from/to the vehicle driveline. The flywheel stores energy, while braking for example, releasing it to supplement or temporaily replace the engine output. The technology has been used in F1 racing cars.

Fuel cell

A device that converts a fuel into electrical energy through a chemical reaction. For example, a hydrogen fuel cell produces electrical energy from hydrogen, which can be used to power an electric vehicle.

Fuel duty

A tax on petrol and diesel. In Nov 2010, the UK tax was £0.58 per litre for petrol and diesel.

Fuel poverty

A household is said to be in fuel poverty if it needs to spend more than 10% of its income on fuel to maintain an adequate level of warmth.

Fugitive emissions

Greenhouse gases released, either intentionally or unintentionally, through anthropogenic activities excluding fuel combustion e.g. methane released through leaks in gas pipes.