Energy glossary - F

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Energy terms defined on this page:

• Feed-in tariff
• Fixed charge
• Fixed price tariff
• Fossil fuel
• Fuel poverty

For a full glossary list click here

A tariff that allows people who generate their own energy to sell back their surplus to the National Grid. See feed-in tariff.

A daily, monthly or quarterly charge levied by the energy supplier in addition to the standing charge.

With a fixed price, or capped tariff your supplier will set a price for your gas and electricity which will not change for a fixed period. See fixed energy tariffs.

A fuel type which has been made over thousands of years, such as coal or gas. Supplies of fossil fuels are diminishing.

Spending more than 10% of your income on your gas and electricity. Currently around 5.4 million households in the UK are described as officially living in fuel poverty.