What makes a home energy supplier the "cheapest" in February 2026?
When looking for the cheapest UK home energy suppliers, there is more to consider than just the price per kWh. The total cost of a home energy tariff is made up of your standing charge (a daily fee) plus your unit rates for gas and electricity. How you use energy in your home will influence which supplier is genuinely cheapest for you.
For example, a low standing charge but higher unit rates may work out cheapest for a small flat with low usage, while a higher standing charge with lower unit rates may better suit a large detached house with high usage.
Key factors that affect your home energy price
- Region: Unit rates vary across UK regions. The cheapest supplier nationally may not be cheapest in your specific area.
- Usage: Your annual kWh consumption for gas and electricity is crucial. If you are unsure, we can estimate based on property size and number of occupants.
- Payment method: Paying by monthly Direct Debit is usually cheaper than paying on receipt of bill or using a prepayment meter.
- Meter type: Standard credit meters, smart meters and Economy 7 tariffs can all have different pricing structures.
- Tariff structure: Fixed, variable, tracker and green tariffs may have different pricing and exit fees.
Should you switch to a green home energy supplier in 2026?
Many UK households now want both low prices and low carbon emissions. In 2026, a growing number of suppliers offer 100% renewable electricity and options to offset or reduce gas emissions. Green tariffs were once significantly more expensive, but competition has helped bring prices down.
When you compare, you can filter for green or low-carbon tariffs to see how little the price difference may be compared with the very cheapest non-green tariff. In some regions, green suppliers are now among the cheapest home energy options.
Common questions about cheap home energy in 2026
Will I lose supply during the switch?
No. Your gas and electricity are delivered through the same pipes and cables. Only your billing and customer service move to the new supplier, so there is no break in supply.
How long does it take to switch home energy supplier?
Most domestic switches in the UK are completed within around 5 working days once your new supplier has all the information they need. Some may still take up to 2–3 weeks, depending on the supplier and your cooling-off period.
Is the cheapest home supplier always the best choice?
The cheapest tariff by estimated annual cost may not always be the best if it comes with high exit fees or poor customer service. It is worth balancing price with contract length, support channels, green credentials and any extras that matter to your household.
What if my current home supplier offers me a new tariff?
Your existing supplier may contact you with a new fixed tariff ahead of price changes. Always compare that offer with the wider market before accepting it. Another supplier could still be significantly cheaper for the same usage.