How to find the best energy supplier for your small business – Small Business UK

May 5, 2026 / Liam Redmond / Comments Off

It’s an uncertain and turbulent time in the energy market and small businesses are not exempt.

The war in Iran has led to significant rises in the price of fuel, while energy bosses predict the next price cap from 1^st July will increase by 9%, with further increases on 1^st October 2026 and 1^st January 2027.

As of March 2025, the average annual electricity bill for UK small businesses was £2,889.37. The average energy consumption for small businesses in the UK is around 25,000 kWh of gas and up to 25,000 kWh of electricity per year.

Other costs are putting pressure on small businesses, who may be forced to close due to the price rises, along with other strains such as the rises in National Insurance (April 2025) and Minimum Wage (April 2026).

As the market is so precarious at the moment, we won’t be covering specific deals. Instead, we’ll tell you how you can find the best energy supplier for your small business.

Quick guide to finding the best small business energy supplier

Check your existing contract before you go

Before you start your search, check your contract for exit fees. Look at when your contract ends and how much notice you need to give if you want to leave. A ‘default’ or ‘deemed’ tariff might mean you can switch. This the energy tariff you’re on if you’ve moved to a new premises and haven’t set up a new energy plan or moved your previous one over. If you’re on a variable tariff you won’t be tied in to a contract but will be vulnerable to price hikes like the ones we’re expecting to see this year.

Find out how much energy you use and how much it costs per unit of energy as this information is vital to take to providers you wish to switch to.

If you’re not in a position to switch, get in touch with your energy supplier and they might be able to move you on to a cheaper tariff anyway. They have to tell you if you can move to something less costly. Alternatively, they can find ways to reduce your existing deal, like fitting a smart meter.

Switch direct through an energy supplier

If you come across a deal you like, it’s worth getting in touch with the supplier directly. It’s best to do this over the phone so that you can talk through terms and conditions and potentially learn about better deals. Tell them if you’ve found a better deal elsewhere too as they might be able to sweeten their existing offering.
Agreements over the phone are legally binding – be careful. Take your time with making a decision about your energy supplier and ask for a contract in writing before you agree to anything.

Check out price comparison sites

Price comparison sites will give you a better idea of what’s going on in the market and what the average prices are for what you’re after.

Some deals might be exclusive to one comparison service while some will only be available direct from your energy supplier. And unlike insurance, there are no energy providers which are not on comparisons website such as Direct Line or Aviva.

There are a few business energy comparison sites out there. They’ll allow you to search by:

Types of energy contract
Price
Business size
Green energy
Perks/bonuses

Remember to look out for extra fees like maintenance costs. Business deals tend to be bespoke depending on your business and energy usage, so you’ll likely need to provide details online and they’ll give you a call back. As they’re bespoke it’s highly unlikely they’ll offer a 14-day cooling off period to pull out of the deal should you change your mind.

Or try an energy broker

An energy broker’s job is to find and negotiate details with an energy supplier for you. They can save you time, spot billing errors and offer additional services. They’ll also remind you when your contract is ending so you won’t fall for auto-renew trap. They may know the whole market, but be warned that they have relationships with certain suppliers and could be more inclined to suggest their offers.

Find out how they’ll charge you before you set up with them. It might be an upfront lump sum or an additional payment on the energy contract you sign up to. Find a reliable broker by looking at their reviews online. Finally, if they do mess you around, you have a right to cancel your contract and get your money back.

How about switching services?

For those who don’t have the time or the energy (so to speak) to look at rates themselves, services are available that can make the switch for you.

On account of the current up and down of the energy market, Flipper has shut down and Look After My Bills has paused its service. However, Switchcraft and Switchd are still on the go.

Switchcraft deals with providers on your behalf. The service is free but they’re paid a commission so they could be biased towards suppliers who are giving them said commission.

Switchd automatically switches you to the best deals but you do pay for the service. Switchd works on a membership model but you won’t be charged until your first switch. They don’t work on commission, so perhaps they are more trustworthy, offering a broader view of the market. There is a free service and paid services cost up to £4.99 a month, with potential savings and customer service facilities increasing with each price point.

Sort out your priorities before you enlist a switching service. For example, they might avoid switching you to a provider with poor customer service, but you could be missing out on the cheapest small business energy supplier. Similarly, paid-for services may give you a wider range of options but how does that fare on balance with forking over a fee?

Saving money on small business energy

Operating a business from home: should I go for a domestic or business tariff?

If you run your business from home, you won’t need a business energy contract and could claim tax back on some of your home energy cost.

Businesses do tend to have lower energy costs per unit and the larger the business, the smaller the unit rate in general. That said, home owners pay 5 per cent VAT on their energy where businesses pay 20 per cent so savings could be made there. Businesses also pay the Climate Change Levy (CCL). It doesn’t apply if businesses use renewable energy. What’s more, they may only pay 5 per cent VAT if they use less than an average of 33 kWh of electricity and 145 kWh of gas a day. (That’s the equivalent of 12,045 kWh of electricity and 52,925 kWh of gas a year, which is well above the amount of energy most people use at home).

You also don’t pay CCL and only pay 5 per cent VAT if you have a residential element to your business. That is to say, you run a B&B, a campsite or a care home.

You’ll need to use a lot of energy at home to justify moving to a business tariff, 50 per cent as a threshold marker. Taking meter readings at the beginning and end of the day will give you a better idea of how much of your home energy is used for your business versus your normal domestic usage.

It’s best to compare domestic and business tariffs to find out what’s best for you – remember to include the VAT and CCL in your final tally.

Refer a friend

You may have seen these before as they’re a useful pull for consumer credit cards and other services. Refer a friend schemes give you and/or your friend a reward if you switch to their energy supplier. They’re normally financial incentives like cash or in-account credit.

They’re not normally as big a draw for business customers but if it’s layered on top of a good deal then that could be a winner for you.

Remember the little things

Small changes really do add up. Start with direct debits and paperless billing to cut down your costs.

What you should be researching to find the best energy supplier

You’ll have an idea of this already, but here’s a recap. Take notice of:

Customer service ratings
Fixed vs variable
How long the contract is
What type of energy is used
Rates and fees
Protections (such as price cap if you run your business from home and have a domestic energy tariff)

Find out how long it will take to switch – it’s normally within 17 days but will be done within 21 at the most.

While you’re here, it’s more than worth your while to make sure that you’re clued up on your rights in the event of:

Which small business energy suppliers are out there?

Octopus Energy

Octopus Energy have overtaken British Gas as the largest energy supplier, with around 24% market share. They’re known for their fair pricing, good customer service, and commitment to green energy.

Once you set up a Direct Debit and have a smart meter, you can join Octoplus, a free loyalty programme with lots of offers, including free coffees and cheap cinema tickets.

Referral scheme: £75 if a fellow business switches to Octopus using your link.

British Gas

The UK’s second-largest energy supplier, British Gas Lite is designed with UK small businesses in mind.

Benefits include a free smart meter when you join, hassle-free Direct Debits and fixed price tariffs to ensure your energy bills stay stable.

For those who don’t want a fixed price tariff, British Gas Business supplies over 350,000 SMEs with energy.

E.ON Next

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Liam Redmond

As an editor at Forbes Canada, I specialize in exploring business innovations and entrepreneurial success stories. My passion lies in delivering impactful content that resonates with readers and sparks meaningful conversations.

How to find the best energy supplier for your small business – Small Business UK

Quick guide to finding the best small business energy supplier

Saving money on small business energy

What you should be researching to find the best energy supplier

Which small business energy suppliers are out there?

Octopus Energy

British Gas

E.ON Next

Good Energy

Ecotricity

Where to get further help

Read more

Liam Redmond