Why switching matters again in 2026
For a few years after the energy crisis, switching barely paid off — almost everyone was on the price cap. In 2026, fixed deals are back below the cap by 5–12%, which means most households can save £150–£300 a year by switching, and even more if you're still on a Standard Variable Tariff (SVT).
Current Supplier Watch
What you need before you start
It takes about 10 minutes online if you have:
- A recent bill or annual statement (or your online account).
- Your postcode.
- Your annual usage in kWh for gas and electricity (look for "kWh used" on the bill).
- Your bank details (most fixed deals require Direct Debit).
- Meter type — standard, Economy 7, prepayment, or smart.
If you can't find your annual usage, comparison sites will estimate from property size — but real numbers give a much more accurate quote.
Step-by-step: switching in 2026
1. Check your current deal
Log into your supplier's app or grab your last bill. Look for: - Your tariff name. - Unit rates for gas and electricity (p/kWh). - Standing charges (p/day). - Contract end date and any exit fees.
If you're within 49 days of the end of a fixed deal, no exit fees apply by Ofgem rules.
2. Compare deals
Use a price comparison site or our Bill Calculator to see the best deals for your postcode and usage. Sort by annual cost — not unit rate alone, because standing charges matter.
Look for: - Fixed vs variable — fixed locks in your unit rates, variable tracks the cap. - Length of fix — 12 months is the sweet spot in 2026 given price uncertainty. - Exit fees — usually £25–£75 per fuel if you leave early. - Green tariff — many are competitively priced.
3. Pick a deal and apply online
Click through to the new supplier and enter: - Personal details and address. - Bank details for Direct Debit. - Meter readings (or let the smart meter handle it).
The new supplier handles the entire switch in the background. You don't need to contact your old supplier.
4. The 14-day cooling-off period
After you sign up, you have 14 days to change your mind with no penalty. The actual switch happens about 5 working days after that under the Energy Switch Guarantee.
During this period: - You stay on your current tariff. - Your supply is never interrupted — same wires, same gas, just a different name on the bill.
5. Submit a final meter reading
On switch day (or as close as possible), submit a meter reading to both the old and new supplier. This stops billing disputes about the changeover usage.
Smart meter? It's automatic — but it's still worth taking a photo of the display for your own records.
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Your old supplier has 6 weeks to send a final bill and refund any credit. If they're late, you can claim £30 compensation under Ofgem rules.
Common myths
- ❌ "My supply will be cut off." No — same physical infrastructure.
- ❌ "I need to tell my old supplier." No — the new one does it.
- ❌ "I can't switch if I'm in debt." You can, if debt is under £500 and over 28 days old (Debt Assignment Protocol).
- ❌ "I can't switch as a tenant." You can, as long as you pay the bill directly.
When NOT to switch
- You're mid-contract with a big exit fee that wipes out the saving.
- You're on a prepayment meter with limited deals (compare carefully).
- You're a vulnerable customer on a protected tariff — check first.
Quick switching checklist
- ✅ Last bill or kWh usage to hand
- ✅ Compared total annual cost, not just unit rate
- ✅ Checked exit fees on current deal
- ✅ Took a meter reading on or near switch day
- ✅ Set a calendar reminder for 12 months later — then switch again
Ready to switch?
Use our Bill Calculator to estimate your annual cost, then compare it against the best fixed deals on the market. Most households who haven't switched in 18 months are overpaying — and 10 minutes today is worth £150–£300 for the next year.
How long does it take to switch energy suppliers in the UK?
The online application takes about 10 minutes. The actual switch happens approximately 5 working days after your 14-day cooling-off period.
Will my electricity or gas supply be interrupted if I switch?
No, your supply will never be interrupted. The physical infrastructure remains the same, only the company billing you changes.
Do I need to tell my old energy supplier I'm switching?
No, you do not need to contact your old supplier. Your new supplier will handle the entire switch process in the background.
Can I switch if I'm in debt to my current energy supplier?
Yes, you can usually switch if your debt is under £500 and is over 28 days old, thanks to the Debt Assignment Protocol. However, it's best to check with the new supplier.
What should I do on the day my energy supply switches?
On or around the switch day, you should submit a final meter reading to both your old and new supplier. This ensures accurate billing for the changeover period.
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