How to switch energy supplier
What happens on switching day, how long it takes and what you need to have ready.
Read guideGet bespoke commercial electricity quotes for your premises. We run the market on your MPAN and consumption, then manage the switch from start to finish.
Compare deals nowRun a full market comparison before you commit. It takes about five minutes and your supply is never interrupted.
Commercial electricity is priced on your MPAN profile class, your annual consumption and how peaky your demand is across the day. Two businesses on the same street can be quoted very different rates.
Half-hourly metered sites, profile classes 05 to 08 and 00, are priced on detailed consumption data and usually get sharper rates than estimated non-half-hourly sites.
Network and policy costs make up a large share of the bill. On pass-through contracts those move independently of your unit rate, so read which elements are actually fixed.
Quotes reflect your real profile class, capacity and consumption pattern.
HH and non-HH sites are handled differently, and we quote both correctly.
Compare fully fixed contracts against pass-through structures on a like-for-like basis.
We flag your window early so you never drop onto out-of-contract rates.
Availability varies by region and meter type. Always check the exact rates quoted for your postcode before you switch.
| Tariff | Type | Rate structure | Exit fee |
|---|---|---|---|
| Fixed unit rate | Fixed | Unit rate and standing charge fixed for 1 to 5 years | Termination charges may apply |
| Pass-through | Variable | Wholesale fixed, network and policy costs passed through | Varies by contract |
| Day / night rates | Fixed | Separate rates for peak and off-peak consumption | Termination charges may apply |
| Out of contract | Variable | Default rates once a contract expires, typically the highest available | None, switch any time |
Commercial electricity rates exclude VAT and the Climate Change Levy. Half-hourly sites are also billed for capacity and network charges.
| Electricity | Gas | |
|---|---|---|
| Typical unit rate | 24p to 29p per kWh | Not applicable |
| Standing charge | 35p to £1.50 per day, by meter size | Not applicable |
| Typical annual spend | £3,200 (15,000 kWh small business) | Not applicable |
Bills have already eased this year as green levies move onto the ECO scheme and general taxation, worth around £150 a year to a typical household on both variable and fixed tariffs.
The reduction comes through unit rates, so what lands on your bill depends on how much you use. Analysts expect a gradual drift downwards rather than a sharp drop — locking in a rate you're comfortable with is still the safer play.
| Price cap level | Annual cost for an average medium-usage household paying by Direct Debit |
|---|---|
| 1st July to 30th September 2026 | £1,720 (est TBC/Ofgem) |
| 1st October to 31st December 2026 | £1,755 (predicted) |
| 1st January to 31st March 2027 | £1,701 (predicted) |
| 1st April to 30th June 2027 | £1,668 (predicted) |
| 1st July to 30th September 2027 | £1,655 (predicted) |
With eight in 10 households worried about bills rising, there's a real opportunity to protect yourself by locking in a fixed deal for 12 months or more that gives certainty on the price you'll pay — especially over the coldest months.
“Not only can you save against the current cap, fixing now also shields you from high prices for at least a year.”
When you switch, there are a few things worth checking.
The price you see on our comparison pages is based on your estimated usage over a year. The lower the unit rate and standing charge, the less you pay — but always check the projected annual cost, not just the headline rate.
If you leave a fixed deal after the 14-day cooling-off period, you might pay an exit fee for each fuel. Deals with low or no exit fees give you flexibility if prices fall.
Most deals run for 12 to 24 months. During that time your unit rate is locked in, so you know exactly what you'll be charged even if the market rises.
The cheapest supplier is different for everyone. It depends on how much energy you use, what you pay now, the deal you're on and where you live. When you compare with us, we only show the deals actually available for your property or business.
Fix for price certainty today. It takes just minutes.
Comparing on our site takes a few minutes and could take a serious chunk off your annual bill.
Your postcode lets us show the correct regional unit rates. If you have a recent bill to hand, even better — accurate figures give accurate results.
You'll see every deal available in your area, ranked on estimated annual cost, along with tariff type, contract length, exit fees and supplier ratings.
Once you've found the deal you like, confirm and we'll do the rest. Your supply is never interrupted and you don't need to contact your old supplier.
Think twice if the exit fee or penalty for leaving is bigger than the saving you'd make. Exit fees start at around £50 per fuel and can reach £250, which wipes out a lot of deals.
Work out what you'd save over the full length of the new contract, then subtract what it costs to leave your current one. If the number is still positive, switching makes sense.
If switching isn't right just now, there are still ways to make sure you're not paying more than you need to.
A smart meter or a monthly bill check is the easiest way to spot rising costs early and act before your next renewal.
Without a smart meter, regular readings make sure you're charged for what you actually use rather than an estimate.
Insulation, draught-proofing and a more efficient boiler cut your bills every year, whatever tariff you're on.
Your MPAN, the 13-digit supply number on your bill, plus annual kWh and your contract end date. For half-hourly sites, a copy of your HH data gives the sharpest pricing.
If your business is growing, adding EV charging or installing heat pumps, tell us. A rising load profile changes which contract structure works best.
Business name, postcode, meter number and current contract end date is all we need.
Our team requests bespoke quotes from business energy suppliers for your consumption profile.
See unit rates, standing charges and contract lengths side by side with no jargon.
Sign your new contract and we manage the transfer with your old supplier. No downtime.
We compare a broad range of deals from suppliers across the UK, so you can find the right fit for your home or business.
We work hard to bring you exclusive deals, along with cashback and other incentives where they're available.
It takes just a few minutes to compare with us — and the deal you find could be well below what you pay today.
Yes. Most suppliers are signed up to the Energy Switch Guarantee, which means a quick, hassle-free transfer. Your new supplier resolves any problems and your old supplier refunds any credit balance within 14 days of your final bill.
There are more options available than ever, which makes it easier to pick the tariff type that fits how you actually use energy — and to stop overpaying by default.
Fixed rate tariffs lock your unit rates and standing charges for the length of the contract, so wholesale market and price cap changes don't affect you mid-term.
Standard variable tariffs are usually the most expensive. They're capped by the price cap, so when the cap moves every quarter, your unit rates move with it.
Dual fuel means gas and electricity from the same supplier, which can be cheaper than buying them separately. Compare both ways to see which wins for you.
Most suppliers now offer electricity backed by renewable generation. Green gas is harder to source, so check exactly what's being matched.
Prepayment means topping up in advance at the meter. It's often pricier than a credit meter, but suppliers must offer at least one prepay option.
Economy 7 and smart tariffs offer cheaper overnight rates. They work well for EV owners and anyone who can shift heavy use to off-peak hours.
From household names to newer challenger brands, we cover a wide range of UK suppliers.
“It took me a couple of minutes to compare energy prices and switch, with all the faff of switching and payments done for you. I've just saved close to £480 per year in gas and electricity.”
Jennifer, Constantine
What happens on switching day, how long it takes and what you need to have ready.
Read guideWhat Ofgem's cap actually limits, and why your bill can still go up.
Read guideA code within your MPAN describing your consumption pattern. Classes 01 to 04 are non-half-hourly, 05 to 08 and 00 are half-hourly and priced on detailed data.
Usually not without paying termination charges. Most businesses switch within the renewal window instead.
Unit rates can be lower, but businesses pay VAT at 20% and the Climate Change Levy, so total costs are not always lower.
You move to out-of-contract rates, which are typically far more expensive. You can switch away at any time from that point.
Typically four to six weeks, allowing for supplier objection checks and contract validation.
Yes. Most commercial suppliers offer REGO-backed electricity, often at little or no premium over a standard fixed contract.
Written by the Grow Your Business editorial team · Updated 25 July 2026