Compare Home Energy Tariffs in London — Find the Cheapest Gas & Electricity Deal
Compare gas and electricity tariffs from all UK suppliers available in London. Unit rates and standing charges depend on your distribution region — a postcode-based comparison gives you accurate results for your specific address.
- Whole-of-market comparison for homes in London and surrounding areas
- See fixed, variable, Economy 7, smart and prepayment tariffs
- Unit rates specific to your London distribution region
- No obligation — switching is free and your supply is never interrupted
UK residential energy only. No obligation to switch.
Compare gas and electricity prices in London
Energy prices for homes in London depend on which electricity and gas distribution network serves your postcode. Even within London, unit rates and standing charges can differ between areas — which is why entering your postcode gives you the most accurate comparison.
EnergyPlus compares tariffs across all UK suppliers serving the London area. Whether you're looking for a fixed deal, a variable tariff, or a specialist Economy 7 or smart tariff, we'll show you the options available for your home and help you switch if you find something cheaper.
What to have ready
- Your postcode — determines your exact distribution region and available tariffs
- Fuel type: electricity only, gas only, or dual fuel
- Annual usage in kWh if known (from your bill) — makes results more accurate
- Current tariff end date if you're on a fixed deal
Get your London energy comparison
Enter your postcode to see the cheapest tariffs available for homes in London and nearby areas.
Energy prices in London — why rates differ by postcode
Homes in London fall within the London electricity distribution area. UK energy prices are set within 14 regional networks — your distribution area directly affects the unit rates and standing charges suppliers can charge, even for the same national tariff.
What determines your London energy rate
- Your electricity distribution region (London)
- Your gas distribution network (varies by postcode)
- Your meter type: standard, Economy 7, smart or prepayment
- Your payment method: direct debit, pay on receipt, or prepayment
- The supplier and tariff you're on
Ofgem price cap in South East England
The Ofgem price cap sets maximum unit rates and standing charges for variable tariffs. In the London region, these differ from the national average — our comparison shows you the actual rates for London postcodes, not a UK-wide average.
Fixed deals may offer rates above or below the price cap, depending on the market at the time. Comparing by postcode tells you whether a fixed deal would currently save you money.
Postcode matters more than city. Even within London, different postcodes can be served by different gas distribution networks, producing slightly different standing charges. Our comparison uses your exact postcode — not a city-wide average — for the most accurate results.
Tariff types available to homes in London
Most UK suppliers serve London postcodes, giving you access to the full range of residential energy tariffs. The right tariff depends on your meter type, usage pattern and how much rate certainty you want.
| Tariff type | How it works | Best for London homes | Watch-outs |
|---|---|---|---|
| Fixed rate | Unit rate and standing charge locked for 12–24 months. Bill only varies with usage. | Households wanting budget certainty or protection if rates are expected to rise. | Exit fees up to £50 per fuel if you leave early. Check end date — auto-rollover applies. |
| Variable / price cap | Rates follow the Ofgem price cap, updated quarterly. No fixed end date. | Households wanting flexibility to switch at any time without exit fees. | Direct debit can increase quarterly if the cap rises. Less bill certainty. |
| Economy 7 | Cheap overnight rate (7 hours) plus higher daytime rate. Requires Economy 7 meter. | Homes with storage heaters, immersion heaters or overnight EV charging. | Daytime rate is higher than a standard tariff. Only cheaper if 40%+ usage is overnight. |
| Smart / time-of-use | Rates vary by half-hour — very cheap overnight, peak at high-demand times. Requires smart meter. | EV owners; households who can shift usage to off-peak (overnight, weekends). | Needs SMETS2 smart meter. Only saves money if you actively shift usage off-peak. |
| Prepayment | Pay in advance by key, card or smart prepayment meter. No monthly direct debit. | Households wanting tight spending control or required to use prepayment meters. | Tariff choice is narrower. Smart prepay meters open up more options than key/card. |
Smart meters and Economy 7 in London
Smart meters for London homes
Most UK suppliers serving London offer free smart meter installations. A smart meter records your energy use every 30 minutes and sends readings automatically, ending estimated bills.
Smart meters also unlock access to time-of-use tariffs — including EV tariffs with very low overnight rates — which can offer significant savings if you can shift heavy electricity use to off-peak hours. If you don't currently have a smart meter, you can request one from your supplier at no charge.
Is Economy 7 right for your London home?
Economy 7 tariffs give you a cheaper overnight electricity rate (typically 7 hours) in exchange for a higher daytime rate. They work well for homes with storage heaters, immersion water heaters or overnight EV charging — but only if you regularly use 40% or more of your electricity during the off-peak window.
If most of your electricity use is during the day, a standard single-rate tariff will usually be cheaper overall. Our comparison covers both Economy 7 and standard options for London homes — just tell us your meter type.
Why compare energy suppliers in London rather than staying put?
UK households on a variable tariff or past their fixed-deal end date are often overpaying. Suppliers' rollover rates — the tariff you move to automatically when a fix ends — are rarely the cheapest available. Here's what comparing gives you.
Accurate London pricing
UK energy prices aren't uniform. A comparison filtered to your London postcode shows the unit rates and standing charges that apply to your distribution network — not a national average.
Total cost comparison
We compare annual costs including standing charges, not just unit rates. A lower unit rate doesn't always mean a cheaper bill — standing charges make a significant difference, especially for low-usage households.
Avoid your rollover rate
When a fixed tariff expires, you're moved automatically to your supplier's standard variable rate — which is rarely the cheapest option available. Comparing before your fix ends keeps you in control.
Right tariff for your meter
Economy 7, smart and prepayment meters each have a different set of available tariffs. Our comparison matches your meter type so you only see deals you can actually access.
Green energy options
Several suppliers serving London offer 100% renewable electricity and green gas tariffs. We highlight fuel mix disclosures so you can compare green tariffs alongside standard options on total cost.
No disruption to supply
Switching energy supplier in the UK is purely administrative — your gas and electricity continue through the same network and pipes regardless of who is billing you. Supply is never interrupted.
Frequently asked questions — energy tariffs in London
What is the cheapest energy tariff available in London?
Will switching energy supplier affect my supply in London?
How do energy prices in London compare to the rest of the UK?
Can I get a smart meter fitted in London?
Can I compare energy tariffs if I'm renting in London?
Is it worth fixing my energy tariff in London in 2026?
Compare energy tariffs for your London home — takes 2 minutes
Enter your postcode to see the cheapest gas and electricity deals available in London and surrounding areas. Fixed, variable, Economy 7 and smart tariffs — all compared on total annual cost, not just unit rate.