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Best business energy suppliers
Companies in Britain can choose from approximately 40 licensed business energy suppliers. This guide is designed to help you determine which supplier is best for your business.
Our experts rank energy suppliers based on the following categories: greenest, cheapest, and best overall business energy supplier:
| Ranking | Supplier | Average review | Reviews | Customer |
|---|---|---|---|---|
| 1 | United Gas and Power | 4.9 | 950 | Business |
| 2 | Octopus Energy | 4.8 | 655,626 | Home and Business |
| 3 | EDF | 4.8 | 157,817 | Home and Business |
| 4 | Good Energy | 4.8 | 13,575 | Home and Business |
| 5 | Shell Business Energy | 4.8 | 172 | Business |
| 6 | TotalEnergies | 4.7 | 7,447 | Business |
| 7 | E.ON next | 4.5 | 171,490 | Home and Business |
| 8 | Pozitive Business Energy | 4.5 | 9,857 | Business |
| 9 | Scottish Power | 4.3 | 123,849 | Home and Business |
| 10 | Utility Warehouse | 4.3 | 64,472 | Home and Business |
Source: Extracted from Trustpilot in August 2025, extracting licensed non-domestic energy suppliers in the UK ranking according to the average score of verified customer reviews.
How to find the best business energy supplier
Finding the “best business energy suppliers” isn’t just about price. It’s about choosing a provider that suits your business size, usage pattern, and service expectations.
Our experts work with a trusted panel of suppliers to bring you competitive quotes tailored to your business. Whether you’re a small shop or a large multi-site operation, we make it easy to switch and save.
Here’s our simple three-step process:
Compare quotes
We’ll request quotes from our panel of trusted business energy suppliers and let you know the best options available in the current market.
Hassle-free switch
We will take care of the switching process for you and make your move to a new business energy supplier as painless as possible.
List of business energy suppliers
Below, we’ve outlined some of the best-known business energy suppliers in the UK. Each offers different contract types, rates, and service levels depending on your business needs.
EDF Energy is one of the UK’s biggest business energy suppliers and the largest zero-carbon electricity generator. It’s currently building a nuclear power station at Hinkley Point C and provides 24/7 live chat support and a wide choice of tariffs.
Best for: Large and small businesses
E.ON Energy is one of the UK’s major business energy suppliers and part of the former ‘big six’. It provides a wide range of tariffs for small and large businesses and focuses on helping customers reduce emissions with energy-efficient solutions.
Best for: Large and small businesses
Octopus Business Energy is growing fast, offering innovative tariffs like 21-hour off-peak and no business energy standing charge options. It also supports solar export across multiple sites, ideal for greener small businesses.
Best for: Small businesses
SSE Business Energy supplies over half a million business meters and generates power from its own wind and hydroelectric dams. It also played a key role in the UK’s COP26 climate summit, supporting net-zero goals.
Best for: Large and small businesses
British Gas, part of Centrica, supplies energy to over 350,000 businesses. It also supports organisations with renewable installations, EV charging, and ongoing energy service packages.
Best for: Large and small businesses
Drax, previously known as Haven Power, supports large businesses with renewable power deals, corporate Power Purchase Agreements, and carbon offset options.
Best for: Large businesses
Scottish Power supplies 100% renewable electricity from its own wind farms. It serves businesses of all sizes and also operates within the UK’s transmission and distribution network.
Best for: Large and small businesses
Engie supplies affordable, low-carbon energy to SMEs and helps them transition to greener operations. It also offers Smart Export Guarantee deals for businesses that generate their own power.
Best for: Small businesses
TotalEnergies offers secure and reliable energy to UK businesses of all sizes. It focuses on hassle-free service and aims to become one of the most trusted names in business energy supply.
Best for: Large and small businesses
Small business energy suppliers
Small businesses often operate with tighter budgets and limited time to manage administrative tasks, such as utility contracts. Choosing the right small business energy supplier can help reduce costs, avoid long-term tie-ins, and make billing more straightforward.
Many suppliers now offer dedicated small business energy deals, with flexible tariffs and support designed specifically for SMEs.
Here are three small business energy suppliers to consider:
Octopus Energy
Octopus provides flexible tariffs for small businesses, including no standing charge options and innovative off-peak rates. It’s well-regarded for customer service and ease of switching.
Engie
Engie offers competitively priced low-carbon energy designed for SMEs. It also supports small firms with self-generation and export options, helping to manage both cost and carbon.
EDF Energy
EDF has a solid track record with small businesses, offering a range of plans with live customer support and options for growing companies needing reliability and straightforward pricing.
Cheapest business energy suppliers
To find the cheapest business energy supplier for your company, we recommend comparing the market by collecting bespoke quotes.
Start now with the free AquaSwitch business energy comparison service. Unfortunately, there’s no straight answer to which business energy supplier is the cheapest. All business energy suppliers adjust their prices daily in response to market changes and target specific customer groups.
Business energy supplier quotes are affected by factors such as:
Contract length
Longer business energy contracts often lock in lower rates, while shorter deals may offer more flexibility but come at a premium.
Tariff type
Fixed tariffs protect you from price rises, while variable tariffs may offer savings if the market drops, but come with more risk.
Meter type
Whether you have a standard meter, a smart meter or a half-hourly meter will affect your pricing and available supplier options.
Location
Your business postcode can impact your energy rates due to regional supply costs and distribution charges.
Energy usage
Larger energy users can often access lower unit rates, while small businesses may benefit from simpler tariffs with no standing charge.
What are business energy suppliers?
A business energy supplier is a retail provider of energy licensed by Ofgem to supply electricity and/or gas to non-domestic properties in Britain.
The energy market is complex, involving various companies responsible for generating, transporting, and selling energy.
However, the role of a commercial energy supplier is straightforward. Here’s a summary:
- Purchase of energy – The supplier buys electricity or gas from the national grid, sourcing it from generators, producers, and importers.
- Distributors – The supplier pays to transport electricity and gas through the grid to individual customer locations.
- Measurement – The meter installed at commercial properties tracks business energy consumption of individual customers.
- Billing – The supplier issues regular business energy bills based on your tariff.
What are the differences between domestic and business energy suppliers?
Some business energy suppliers are also domestic energy suppliers, but there are some key differences between the two services:
- Commercial energy suppliers are not limited by a business energy price cap and generally have much more expensive standard variable tariffs.
- Business energy suppliers charge VAT at 20%, whereas home energy suppliers charge 5%. Business energy suppliers must add the climate change levy to their bills.
- Home energy suppliers offer dual-fuel products, whereas business energy suppliers offer them separately.
Can I negotiate prices with my business energy supplier?
It depends; if you’ve agreed to a contract with your current business energy supplier, it will not usually be possible to negotiate rates before your contract end date.
However, if you’re out-of-contract paying standard variable rates, then it is certainly possible. Out-of-contract business energy rates are typically needlessly expensive, and your supplier may offer a cheaper fixed tariff as an alternative.
To get the best business electricity rates, it’s important to negotiate with your current supplier and compare the whole market.
What’s the difference between a business energy supplier and a distributor?
Business energy suppliers and distributors perform very different roles in the energy market.
An electricity distributor owns and operates the local electricity distribution network, consisting of powerlines, underground cables and substations. The function of a distributor is to transport electricity from the core National Grid to homes and businesses in their local area.
In contrast, a business energy supplier will purchase electricity in the wholesale market and then pay the distributor to transport the energy to the commercial customers they supply.
Business energy supplier complaints
Business energy suppliers must provide a customer services department to handle problems and customer complaints. If you have a complaint, the first step is to call your supplier and explain the problem and how you would like this to be resolved.
You can find the contact numbers of your supplier’s customer services departments in our guide above.
If you don’t feel your complaint has been appropriately resolved, you can formalise your complaint using a letter. The Citizens Advice Bureau have published a handy template to prepare your letter. We recommend including any supporting evidence, such as photos, to support your formal complaint.
Ofgem sets out a further and final step. If you reach eight weeks of dialogue with your business energy supplier without resolution, you can escalate your complaint to the Energy Ombudsman. See contact details below:
Energy Ombudsman:
Contact number: 0330 440 1624.
Website: www.energyombudsman.org
Business energy suppliers who have gone bust
The last quarter of 2021 and the start of 2022 were difficult for business energy suppliers. The wholesale cost of natural gas has increased by 250%, resulting in several corporate failures in suppliers.
Here’s the list of business energy suppliers that have gone out of business over the last few years:
| Business energy supplier | Date | Number of customers |
|---|---|---|
| Whoop Energy | 18 February 2022 | 212 |
| Xcel Power Ltd | 18 February 2022 | 274 |
| Together Energy Retail Ltd | 18 January 2022 | 1 |
| CNG Energy | 3 November 2021 | 41000 |
| MA Energy | 2 November 2021 | 300 |
| Ampoweruk | 2 November 2021 | 2000 |
| Bluegreen Energy | 1 November 2021 | 5900 |
| Daligas | 14 October 2021 | 9000 |
| Symbio Energy | 29 September 2021 | 48000 |
| People's Energy | 14 September 2021 | 1000 |
| PFP Energy | 7 September 2021 | 5600 |
| Hub Energy | 9 August 2021 | 9000 |
What happens if my energy supplier goes out of business?
Ofgem, the energy industry regulator, has issued the following advice to customers of business energy suppliers that have gone out of business:
- Arrange to take regular meter readings at your business properties.
- Do not try to arrange a switch of business energy supplier
- Wait for a new supplier to be appointed.
In the case of a corporate failure of a licenced business energy supplier, Ofgem will step in and ensure there will be no disruption to your supply of energy.
In a supplier failure, Ofgem appoints a supplier of last resort. All customer accounts of the bankrupt supplier will transfer to the supplier of last resort. Once the appointment process is completed, your new business energy supplier will contact you.
You’ll receive communications from your new business energy supplier when the transfer has been completed. You’ll be supplied with energy from the transfer point under a deemed contract.
Under a deemed contract, you’ll pay expensive, variable out-of-contract rates, but you can switch to another supplier anytime.
Once your supplier of last resort transfer has been confirmed, we recommend using the AquaSwitch business energy or business gas comparison service to ensure your new supplier offers competitive prices.