How to switch business energy suppliers in the UK
When was the last time you switched business energy suppliers? If you’re not a regular switcher, it could be because you feel you don’t have the time to compare business energy rates or that you won’t save enough money by switching.
But what if we told you that one quick call with Bionic’s tech-enabled experts is all it takes to switch suppliers and save on your business energy bills?
Here’s all you need to know to switch energy suppliers for a better deal on business gas and electricity.
Five-point summary
- Switching business energy suppliers or tariffs can save you substantial money, especially if you haven’t switched recently. Staying with your current provider could mean you’re paying deemed or out-of-contract rates, which are much higher than fixed-rate deals.
- Changing suppliers allows you to choose flexible, fixed, or multi-site contracts tailored to your business needs. You may also benefit from improved customer service, business energy audits, or helpful support extras.
- You can only arrange a switch during your “switching window” (before your current contract ends). Compare deals and lock in rates early to avoid price volatility and automatic rollover to expensive rates.
- Most business contracts don’t have a cooling-off period; once you sign, it’s binding. You can opt out of auto-renewal at the contract start and should always know your switching window and contract terms.
- The main reasons a supplier can block your switch are outstanding debt or if you’re still under contract. You can’t switch until the contract ends or debts are paid. If switched without consent, raise it quickly to return to the old contract or resolve with Ombudsman if needed.
Why change electricity suppliers for your business?
There are several benefits of switching business energy suppliers. Below, we’ve listed just some of these:
Save money by switching business energy suppliers
Switching to a different business energy supplier and moving to a new tariff could save you money. If you haven’t switched for a while, there may be a bigger potential for saving.
The best way to see how much money you could potentially save is by getting a quote from Bionic’s tech-led experts.
Avoid deemed rates by switching business energy suppliers
You'll be on deemed rates if you move into new premises without arranging a business energy contract. The property will still have a power supply, but the existing provider will charge you these more expensive rates until you switch or arrange a fixed-rate contract. The good news is that you can switch business energy suppliers at any time if you’re on deemed rates, without any notice period and with no termination fees.
To get out of a deemed business tariff, all you need to do is find a tariff that suits your business better and switch to it.
Get better business energy contract terms
Switching electricity suppliers allows businesses to choose from flexible or fixed deals and tailored contracts to suit their business needs. Multi-site energy contracts can be a good option for businesses operating across more than one location.
Avoid out-of-contract rates when you switch electricity suppliers
If you let a fixed-rate energy contract end without lining up a new one to replace it, your supplier will place you on more expensive out-of-contract rates. This means long-standing customers can pay more than new customers for the same services.
By shopping around and comparing prices, you can often find better deals from other providers or even save money by arranging a fixed-rate contract with your current supplier.
Access to better service, technology, and analytics with a new energy supplier
One reason for changing business energy suppliers might be to move to a supplier with stronger support, quicker response times, or a dedicated business account manager. Additionally, some suppliers may include extras like business energy audits, efficiency advice, or business support services.
When shouldn’t you change energy suppliers?
It’s not a good idea to change energy providers if you have to pay a penalty or exit fee to leave your current contract. This is especially the case if the penalty is larger than any potential savings you could make.
But, unlike domestic energy contracts, most business energy contracts often don't come with any early termination option except in specific circumstances. That's why you should always make sure you're 100% happy with the terms and rates of any contract before signing.
Contract basics to know before you switch business energy supplier
Before we look at the why and how of switching, let’s take a quick look at some business energy switch basics, including the terms of your contract and your rights as a commercial energy customer.
What is your switching window?
Your switching window is the earliest point at which you can compare prices and arrange a new deal, and it’s the responsibility of your supplier to let you know when this window opens. This can be several months before your current contract's end date, so always check your contract. And if you run a micro business, the rules around switching are different to those of other SMEs.
However long your switching window, your supplier must provide you with written confirmation of it and also explain their automatic renewal policy and the terms of their deemed contracts.
What happens when your business energy contract ends?
When your business energy contract ends, you'll automatically be rolled onto your supplier’s more expensive out-of-contract rates. To avoid overpaying, you’ll need to run a comparison and switch energy suppliers, or switch to a better deal with your current supplier.
Depending on your supplier, you may be rolled onto a new fixed-term contract – often with slightly higher rates – although this is becoming less common. Alternatively, you might be moved on to a 30-day rolling contract until you formally organise a new one.
When will you get your new energy contract after switching?
There are several obligations that every energy supplier must meet. Once you sign up for a business energy contract, it’s the responsibility of the new supplier to contact you within ten days, outlining the full terms and conditions of your contract. This includes when your switching window opens, their automatic renewal policy and the terms of their deemed contracts.
No one likes to read the T&Cs, but it’s worth taking the time to read through and understand them – not least because business energy contracts don't offer a cooling-off period. This means you can’t change your contract once you’ve signed on the dotted line, so it can literally pay to make sure everything is as it should be.
Can you opt out of your automatic renewal scheme?
You can opt out of your supplier’s automatic renewal scheme on the first day of your contract. To do so, you’ll need to write to them once your contract is set up and ask to be removed from the automatic renewal scheme.
This can be preferable to being tied into a new long-term contract with higher rates, but forgetting to compare rates and find a new deal within your renewal window will leave you on deemed rates until you organise a new contract.
When you change business energy supplier with Bionic, we can take care of your renewals so you never have to worry about overpaying for energy. Our tech-enabled experts can keep an eye on the date of your renewal window and compare deals on your behalf. If you like the deals we’ve chosen, we can switch contracts without you having to lift a finger.
Can your business energy supplier block your switch?
Your supplier does have the right to block your switch, but only in the following specific circumstances:
- If you owe money to your supplier. If you owe more than £500 for gas or £500 for electricity, your supplier can block your switch until the debt has been repaid.
- If your current fixed-term contract hasn’t ended. Once you sign up for a business energy deal, you can’t switch to a new deal until this one has expired. Even so, you can compare deals as soon as your switching window is open.
- You don’t pass your new supplier’s credit check - You may not realise it, but business energy suppliers always run a credit check to help work out whether or not you are low risk or high risk before they enter into a contract with you. This helps give them assurances that you’re unlikely to default on your energy tariff. For more information, check out our guide to business energy and credit checks.
Can you change your energy supplier if you’re in debt?
Before you compare business or domestic energy deals, remember that if you’ve been in debt with your supplier for more than 28 days, you won’t be able to switch until the debt is paid off.
And you won’t be able to compare business energy deals until your current deal enters its switching window, which is usually between one and six months before its end date.
Will your energy be turned off if your business energy switch gets blocked?
No, it’s rare for a supplier to resort to disconnecting a customer’s energy supply.
Disconnection is usually a supplier’s last resort, and most will only do this when all other avenues have been exhausted in trying to recuperate debt from a customer over a considerable time. Before disconnecting your premises, your supplier must make a reasonable effort to contact you, via email, phone and letter.
In addition to an outstanding balance, your supplier has the legal right to disconnect your supply if you have unlawfully altered your premises’ energy meter. An unlawful alteration would be any modification that changes the function of the meter, most commonly to bypass the meter and reduce the amount you’re being charged for energy.
Provided you are not in debt and you have not altered your meter in any unlawful way, then there is very little chance that your supply will be cut off during a switch – even if either supplier chooses to block the switch.
If your switch is blocked and your current contract ends, instead of your supply being cut off, your current supplier will move you onto more expensive out-of-contract rates until a resolution can be found, and a new contract is organised.
When is the best time to switch business energy suppliers?
Energy prices are always changing, and the timing of your energy switch can make a big difference to the rates you pay. The trouble is, the terms of commercial energy contracts mean you can’t actually change energy suppliers until your current contract has come to an end.
But that doesn’t mean your contract’s end date should completely dictate when you switch. You should run an energy price comparison as soon as your switching window opens. That way, you can lock in rates early for when your current contract ends. This can help you avoid price volatility and save money.
When it comes to commercial gas and electricity, there’s actually a limited timeframe in which you can compare deals and make the change.
What is a switching window?
A switching window is simply a designated time frame during which you can compare business energy deals and sign up for a new one.
Once your current deal enters its switching window, you can get in touch with Bionic’s tech-enabled experts to compare deals and negotiate exclusive rates on your behalf.
Although you can’t actually switch at this point, you can agree to a new deal and lock in your rates to help avoid any price hikes. This means your new deal will take effect as soon as your old one ends, and you can avoid being rolled over onto your supplier’s more expensive out-of-contract rates.
How long does it take to switch business energy?
This depends on the size of your business and whether or not you're still in contract with your current supplier.
If you're still in contract with your current supplier, the switch won't happen until this contract ends. Even if you agreed to join another supplier months in advance.
There are benefits to sorting your contract early. You might secure cheaper rates if prices increase and there's less chance of you forgetting to renew and rolling onto your supplier's out-of-contract rates.
If you're not in contract with your current supplier, the switch can take up to 30 days (another reason why it's best to line up a contract early is that you won't have an expensive contract gap). If you run a micro business, then your switch should take no longer than five days.
Switching times can be affected by the circumstances of your own business or an objection from your current supplier. These objections can happen for several reasons, including:
- If you have an outstanding balance with your current supplier.
- If both your current and new suppliers agree that the switch request was made in error.
- If you have multiple meter points at one premises and fail to switch them all on the same day.
- If termination has not been given to your current supplier.
- If the incorrect contract start date has been given to your new supplier.
If your supplier blocks your switch, they have a legal obligation to let you know why they’re doing so, as soon as possible.
If you choose to switch and you experience switching times beyond six weeks, then you should write to your supplier and ask for a progress update.
Your supplier will have 14 days to respond to your query. If they fail to respond within this time, you should seek to escalate the issue to your supplier’s CEO, who will have an additional 14 days.
If you’re having any issues with your business energy supplier or any aspect of your switch, our business energy experts might be able to help, so it’s worth giving us a call for some guidance.
If your supplier blocks your switch and you feel the reason is not legal, you should seek to raise the issue with the Energy Ombudsman. The Energy Ombudsman will review the reasons given by your current supplier for blocking the switch, and rule whether they are deemed legal or not before declaring a ruling for all parties.
You can contact the energy ombudsman in the following ways:
Phone - 0330 440 1624
Email - enquiries@os-energy.org
X - @OmbudServices
Website - www.ombudsman-services.org/energy
Post - Energy ombudsman, PO Box 966, Warrington, WA4 9DF
Remember, if you're not satisfied with the level of service that you receive from your supplier, then you should look to switch as soon as possible – and the fastest and simplest way to do so is with Bionic.
What if you’ve been switched to an energy tariff you didn't agree to?
Unlike domestic energy deals, business electricity and gas contracts don’t offer a cooling-off period - once you enter into a contract, you’re bound by its terms for the full duration outlined in the T&Cs.
But if you’ve been switched to a new energy contract that you didn’t agree to, it is possible to break the terms of the contract early and transfer back to your old supplier.
If you think that your business energy contract has been switched without your consent, then you should write to the new supplier as soon as possible and let them know your concerns. It’s important to keep written records of all correspondence over this matter - including dates – in case they are needed for evidence.
It’s also a good idea to write to your old supplier and let them know what the situation is. If the switch was made in error, your previous supplier may be able to support your case.
In the event that you have been switched without your consent, the standard procedure is to revert you back to your old supplier on a deemed rate contract. If you have inadvertently switched the wrong meter out of error, then you can be transferred back to your previous meter – provided you have a contract in place with your current supplier, otherwise your supplier may be unable to apply for the meter again.
If this is the case, then you will be reverted back to your old supplier on a deemed rate contract. If you are switched back to your old supplier but haven’t agreed on a formal contract with them, then you should look to switch to a better deal with better rates.
If your current supplier doesn’t acknowledge your initial correspondence within 14-days then you should escalate the issue, in writing, to your supplier’s CEO. If you get no response after 14 days, you can escalate the issue to the Energy Ombudsman who will indecently investigate the issue and make a ruling.
It’s important to be aware that failing to organise a new contract when your current one expires can mean you're transferred onto a new contract, without formally agreeing to it. Fortunately, this is becoming less common, with many suppliers now choosing instead to transfer businesses onto a deemed rate 30-day rolling contract, which means you’re free to switch away with only 30-days’ notice.
Who can switch business energy suppliers?
Switching business energy supplier can help companies reduce costs, secure better contract terms, and gain more control over their energy usage. Whether you run a small shop, or a large corporation, most businesses can benefit from exploring their options. Here’s a breakdown of who can switch:
SMEs and micro businesses
SMEs and micro businesses can overpa for energy because they renew with the same supplier or don’t compare deals at renewal. If you’re a micro business or SME, switching business energy can help you:
- Lower monthly bills with competitive tariffs
- Access fixed-rate deals to protect against rising prices
- Improve budgeting with predictable energy costs
Large businesses with complex energy needs
For large organisations with multiple sites or high consumption, switching business energy supplier can unlock tailored solutions such as:
- Flexible contracts tailored to usage patterns
- Access to wholesale market rates
- Support with sustainability and green energy options
Businesses whose fixed-term contracts have ended
If your fixed-term contract has expired, your supplier may automatically move you to out-of-contract rates, which are often much higher. If you find your business in this position, you can switch business energy supplier at any time, typically with no exit fees, to secure a better deal.
Businesses on deemed tariffs
If you’ve moved into new premises or haven’t agreed a contract, you may be on a deemed tariff. Switching business energy in this situation can deliver savings and prevent overspending.
When can you switch energy suppliers?
Although you’re bound by the terms of your contract from the moment you sign it, certain circumstances allow you to change certain aspects of your business energy contract.
- A change in circumstances - If the circumstances of your business have changed to the degree where your current contract is no longer feasible, such as a drastic decrease in your cash flow, then you should write to your supplier outlining the change in your circumstances. Remember to keep evidence of all correspondence with your supplier, along with the dates each was sent and any applicable evidence, for your own reference, if required.
- If you need to set up a repayment plan - If you're struggling to pay your business energy bills, then you should write to your supplier and request a repayment plan. Repayment plans are designed to allow you to repay any arrears built up on your account while paying for additional energy you use. But before this can be offered as a solution, you must first provide your supplier with evidence that you can pay for the additional energy, while keeping up with the payments on your arrears. Your supplier will refer to your previous payment history when deciding whether you are eligible for a repayment plan. If you have missed several past payments, then you are less likely to be offered a plan that allows you to use additional energy.
- If you’ve been moved to a deemed contract - If you’re looking to change the terms of your business energy contract because you noticed an increase in the amount that you’re paying, then it may be worth checking if you have been moved onto a deemed contract. If you are on deemed rates (also known as out of contract rates), your supplier may have increased your monthly direct debit amounts to reflect these new rates – but this can be corrected by giving monthly meter readings.
Remember that a deemed contract is used for businesses that have not agreed on a formal contract with a supplier. Typically, deemed contracts offer higher rates than the market average, so you want to switch away from these as soon as possible. Fortunately, you're not bound by the same rules when on a deemed contract, so you can switch to a new deal with only 30 days’ notice.
Ultimately, if you’re not happy with the terms of your current energy contract, and you are not in debt or struggling to keep up with payments, then it’s best to switch to a new energy deal as soon as your switching window opens.
How to switch gas and electric suppliers with Bionic
If you’re wondering “What’s the best way to change my business energy supplier?” then you’ve come to the right place - the tech-enabled energy experts at Bionic can find the right deal for your business in a matter of minutes and help you with the switch.
If you’re thinking “Why Bionic?” consider that we’ve already helped thousands of businesses to switch electricity suppliers in the UK and we can definitely do the same for your business. And we help commercial customers form the UK's main price comparison websites to switch energy suppliers - including Compare the Market, MoneySuperMarket, Uswitch and Confused.com.
To start your business energy price comparison, let us know your postcode or give us a call on 0800 077 3701 and we’ll do the rest..
