Gas & Electricity Tariff Prices per kWh

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Although many people may not realize it, the price that you pay for your energy is made up of two different charges:

  • Standing charge - this is a fixed amount that you are charged each day, regardless of how much gas or electricity you use.
  • Unit rate - this is the price you will pay per unit (kWh) of energy, so it can fluctuate depending on how much energy you use.

The unit that both gas and electricity are measured in is kilowatt hours (kWh). One kWh of gas is approximately equivalent to leaving a small gas hob burner on for an hour. One kWh of electricity is the rough equivalent of running a washing machine for an hour.

How energy bills are calculated

When calculating the price of your bill, energy providers monitor how many kilowatt hours of gas or electricity you have used over a certain period of time, and then multiply this by the price per unit set in your tariff. The number of days the billing period covers is then multiplied by the tariff’s daily standing charge cost.

They then add the two figures together to provide your total bill.

Current gas and electricity unit prices

The tables below show the current leading electricity and gas tariffs on the market, by average unit cost in kWhs. These figures should be used only as an indication of price, as the actual price charged for any specific tariffs will be different depending on where in the country you live.

In order to get accurate results for your property, it’s important to carry out a full market comparison by entering your postcode in the box at the bottom of the page. Full details of tariff unit prices and standing charges will be displayed within this comparison.

The information displayed below is based on a UK average. Suppliers, tariffs and prices will all vary between regions. For accurate information for your area, simply enter your postcode below.

Electricity tariffs by unit (kWh) rate

Supplier Tariff Avg. kWh unit price (ex VAT) Annual Standing Charge (ex VAT)  
Sainsbury's Energy Fixed Price May 2018 11.871 pence £80.30 Compare prices
isupplyenergy iFix 16-Month Sep18 12.03 pence £66.50 Compare prices
Sainsbury's Energy Standard 12.157 pence £90.41 Compare prices
British Gas HomeEnergy Capped May 2018 12.157 pence £90.41 Compare prices
Sainsbury's Energy Fix and Reward May 2018 12.157 pence £90.41 Compare prices
British Gas Standard 12.157 pence £90.41 Compare prices
British Gas HomeEnergy Fixed Aug 2019 12.157 pence £90.41 Compare prices

Gas tariffs by unit (kWh) rate

Supplier Tariff Avg. kWh unit price (ex VAT) Annual Standing Charge (ex VAT)  
first:utility First Fixed May 2018 v7 2.762 pence £64.82 Compare prices
first:utility Home Services Fixed May 2018 v4 Full Service 2.762 pence £69.61 Compare prices
Green Star Energy Rate Saver 12m Fixed 1705 2.786 pence £66.87 Compare prices
Green Star Energy Rate Saver 12m Fixed 1705 (online billing) 2.786 pence £66.87 Compare prices
isupplyenergy iFix 16-Month Sep18 2.793 pence £65.21 Compare prices
EDF Energy BIue+Price Protection Jun18v2 2.812 pence £91.25 Compare prices
isupplyenergy iFix 12-Month May18 v2 2.816 pence £61.30 Compare prices

Home gas and electricity price comparison


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