This compares only the figures and terms you enter. It does not retrieve live offers, identify the cheapest supplier or transfer your account details.
The optional sponsored referral may not be available in every situation. Please review the provider’s terms before proceeding.
Start with the same usage period
This version does not retrieve current supplier offers or promise the cheapest tariff. It compares figures you enter for the same fuel and period, helping you understand a quote you already have or prepare for a supplier conversation.
What to do if your information is incomplete
You can still plan a comparison without a bill, but do not fill a missing annual usage, rate or standing charge with a monthly payment or a guess. Note what is known, ask the supplier for the missing figure or use the bill and calculator guides to prepare it later. A comparison is more useful when its assumptions are visible than when it produces a precise-looking number from weak evidence.
- Known: the fuel, dates, unit rates or quote terms you can verify.
- Unknown: figures you have not seen or cannot currently check.
- Not equivalent: a monthly Direct Debit, an account balance and an annual kWh figure.
Prepare a like-for-like comparison
Record annual or period usage, fuel, unit rates, standing charges, tariff type, payment method, term, exit fees and any conditions. Keep the dates and assumptions beside the figures. If one offer uses annual usage and another uses a single month, convert only when the evidence supports it rather than guessing.
Compare full cost and uncertainty
Separate any fixed fees or discounts from the ongoing energy charge. Mark eligibility, future variable prices and missing details as unknown instead of turning them into an assumed saving.
Example of a transparent comparison
Illustrative example only: if 1,000 kWh is entered for a period, a 25 pence unit rate contributes £250 to usage cost. Add the standing charge for the same period, then repeat the method for the other tariff. Keep exit fees and one-off charges separate so they are not hidden inside a simple unit-rate result.
Read the result as a scenario
A lower entered charge means the alternative is lower under the figures and period supplied; it does not prove that the offer is available, suitable or cheaper after missing fees and conditions. Check quote expiry, exit fees, payment method, meter requirements and whether the rates apply to both fuels.
When switching may not be the first step
If the problem is an unexplained bill, wrong reading, credit balance or complaint, a new tariff does not resolve the account history. Use the bill guides and Energy Money Checker first. Once the account position is clear, you can compare an alternative quote without confusing a billing correction with a supplier change.
A practical switching checklist
Before accepting an offer, check the current and alternative supplier, tariff name, unit rates, standing charges, payment method, contract dates, exit fees and any eligibility conditions. Ofgem also says the new supplier may need information from your bill, including your current supplier, tariff, unit cost and annual usage.
Fix the account problem first when needed
A new tariff does not resolve an unexplained bill, wrong reading, credit balance or final-bill issue. Use the relevant guide or checker first, then decide whether switching still makes sense.
Common questions
Does this page compare live energy suppliers?
No. It compares figures that you enter from known quotes or tariff information. It does not retrieve live offers or identify the cheapest supplier.
What if I do not know my annual usage?
Use a dated bill or statement if available, or leave the comparison until you have comparable usage information. Do not turn a monthly payment or an unknown figure into annual kWh.
Does a lower result mean I should switch?
No. It means the alternative is lower under the figures entered. Check the offer terms, fees, eligibility, dates and the accuracy of your usage before making a decision.