Changing your energy tariff can look like a five-minute job: enter your postcode, compare a few deals and click go.

That is how people end up choosing a tariff that costs more than expected, locks them into the wrong deal or does not work properly with their meter.

For a Peterborough household, the first step is not hunting for the lowest headline price. It is finding out exactly what you have now.

Here are the checks to make before you switch.

1. Find your current tariff and end date

Look at a recent bill or your supplier’s online account. You need the name of your tariff, its end date and the annual usage figure your supplier is using.

If you are on a standard variable tariff, Citizens Advice says you can usually switch at any time. A fixed tariff is different. You may have to pay an exit fee if you leave while more than 49 days remain on the contract.

That fee can wipe out the saving from a new deal, so check it before pressing the button.

If your fixed term is nearly over, it may be worth waiting until you are inside that final 49-day period and checking the figures again.

 2. Compare unit rates and standing charges

A tariff has two main prices: the unit rate, which is what you pay for each unit of gas or electricity, and the daily standing charge.

Do not compare tariffs using the unit rate alone.

A deal with a slightly lower electricity rate can still work out worse if its standing charge is much higher. The same goes for gas.

Ofgem says these charges vary by region, payment method, fuel type and meter type.

Peterborough does not have one single energy price for every home, so a figure seen online may not match the rate offered for your postcode and payment arrangement.

Also watch the difference between an annual estimate and your actual bill.

Ofgem’s price-cap figures are based on typical household use.

They are a benchmark, not a promise that a Peterborough household will pay that amount.

For 1 October to 31 December 2026, Ofgem lists an average price-cap figure of £1,723 a year.

That number is easy to share and easy to misunderstand.

Your bill depends on how much energy you use, as well as the rates and charges on your tariff.

3. Use your own energy consumption

A comparison based on “typical” use can give a misleading result.

Find the annual gas and electricity figures on your bill and use those instead.

If you have moved home, changed your heating habits or added something that uses a lot of electricity, last year’s figures may no longer tell the full story.

A home with electric heating will look very different from one that mainly uses gas for heating and hot water.

Do not guess if your supplier can provide actual readings or a recent usage history.

The closer the estimate is to your household, the more useful the comparison becomes.

 4. Check the tariff type

A fixed tariff gives you set unit rates for a stated period, although your total bill can still rise or fall with usage.

 A standard variable tariff can change, subject to the rules around the price cap.

Ofgem says the cap applies to standard variable tariffs and is not a limit on the total bill. It limits the rates and standing charges suppliers can use.

A household that uses more energy will still pay more.

Fixed tariffs sit outside that price-cap protection. That does not automatically make one good or bad.

 It means you need to look at the rates, contract length, exit fee and your own appetite for prices changing.

 5. Check your meter and payment method

Before switching, confirm that the new tariff supports your meter. This is especially important with smart meters, prepayment meters and time-of-use tariffs.

Check how you will pay too. Direct debit, prepayment and other payment methods can come with different rates or conditions.

 If you rent your Peterborough home, check your tenancy agreement as well.

Your landlord may be responsible for the energy account or the meter arrangement.

A deal that looks cheap on a comparison screen is no bargain if it cannot be set up properly for your home.

 6. Check what happens during the switch

Citizens Advice says you normally have a 14-day cooling-off period after agreeing to a switch.

You should not need to arrange the change yourself by contacting your old supplier, and switching usually takes five working days once the process is under way.

Take a meter reading on the day of the switch and keep a photograph of it.

Send the reading to the relevant suppliers and keep the final bill from your old account.

That gives you something to check if the closing bill does not match your records.

The switch should not leave you without energy, but the paperwork can still be messy if readings or account details are wrong.

Keep the emails and bills until the old account is settled.

7. Look beyond the tariff if the bills are already a problem

Changing supplier will not fix every energy problem.

If the issue is a cold home, poor insulation, debt or difficulty understanding the bill, Peterborough City Council points residents towards the Local Energy Advice Partnership, known as LEAP.

The service offers energy and money-saving advice, home energy assessments, bill-management support and referrals for debt advice.

The council also warns that ECO4 funding is limited, so grants and energy-efficiency help should be checked directly rather than assumed to be available.

That is worth remembering before signing up to anything.

A tariff change may help with the rate, but it will not solve a faulty meter, unaffordable arrears or a home that is losing heat quickly.

The sensible order is simple: check your current deal, use your own consumption, compare both rates and standing charges, then look at contract rules and meter compatibility.

Only after that should the headline saving decide anything.

If you have found a tariff decision that was harder than it looked, tell us what caught you out the exit fee, the standing charge, the meter or something else.

Those real examples could spark a follow-up.

Comment below 

Here Are Some Useful Energy Resources

1. Energy price cap unit rates and standing charges

2. Energy price cap and standing charges explained

3. Switch energy supplier or tariff

4. Local Energy Advice Partnership (LEAP)

5. Home energy efficiency