Energy remains one of the biggest controllable overheads for UK firms, and the gap between a good contract and a poor one can run to thousands of pounds a year. Unlike household tariffs, business energy deals are quoted individually, so the price you pay depends heavily on when you sign, how you negotiate and which suppliers you approach. Many businesses simply renew with their existing provider and pay more than they should for the privilege.

This guide ranks ten options worth considering in 2026, starting with a comparison service that does the legwork for you, followed by nine established suppliers covering everything from microbusinesses to multi-site operations. For each, we cover what they do well, who they suit and where they fall short.

1. Utility Bidder

Utility Bidder is not a supplier but a business energy broker, and that is exactly why it tops this list. Rather than gathering quotes yourself, Utility Bidder compares deals across the market, including most of the suppliers below, and negotiates on your behalf. The firm, part of the Bionic group, is a multi award-winning broker widely regarded as the UK’s leading business energy intermediary, and claims customers can save up to 35% on their energy costs. Its customer service is consistently top-rated, and it handles gas, electricity and water.

One long-standing customer wrote on Trustpilot: “Have used different energy brokers over many years and have been using Utillity Bidder for proberly around 10 years now and have served me very very well. … Nicole Thorpe is and has been my contact throughout the years, she is very knowledgeable and has many years of market experience to offer. … Highly recommended.”

What to watch: a minority of reviewers say they felt hurried to commit to a deal, and some would like the commission arrangement spelled out more clearly at the start. Ask directly and you should get a straight answer.

2. Octopus Energy

Octopus has built its reputation on renewable electricity, transparent pricing and a slick digital platform powered by its Kraken software. Its business arm suits small and medium firms that want straightforward tariffs and responsive support without account-manager formality. The drawback is at the other end of the scale: very large or complex multi-site organisations may find its offering less tailored than that of the traditional industrial suppliers.

3. British Gas

The biggest name in UK energy, British Gas supplies hundreds of thousands of businesses and offers add-ons such as boiler cover and energy insights tools. Its scale and longevity reassure firms that value stability, and its account options span microbusinesses to large estates. That same scale can work against it: pricing is not always the sharpest available, and service can feel impersonal compared with smaller challengers.

4. SSE Energy Solutions

SSE Energy Solutions focuses squarely on the business market, with strengths in multi-site portfolios, half-hourly metering and decarbonisation services including EV charging infrastructure. It suits larger organisations with an eye on net-zero commitments. Smaller firms, however, may find the proposition geared towards bigger contracts than they need.

5. EDF Energy

EDF supplies low-carbon electricity backed by its nuclear generation fleet and offers a solid range of fixed-term business contracts. It is a sensible pick for medium and large businesses that want price certainty from a financially robust supplier. On the downside, its processes can feel slower and less flexible than those of digital-first rivals.

6. ScottishPower

Owned by Iberdrola, ScottishPower has invested heavily in UK wind generation and offers green tariffs backed by renewable sources. It suits businesses that want an established supplier with genuine renewable credentials. Customer service reviews are mixed, though, so it pays to check current feedback before signing.

7. TotalEnergies

TotalEnergies Gas & Power is one of the largest dedicated business suppliers in Britain, covering both fuels and offering flexible purchasing arrangements for high-volume users. Larger commercial and industrial customers are its natural fit. Smaller businesses can be supplied too, but the experience is built around commercial contracts rather than hand-holding.

8. Yu Energy

Nottingham-based Yu Energy is a challenger aimed squarely at SMEs, with UK-based phone support and the option to bundle electricity, gas and water on one bill. It appeals to owners who want a single point of contact for utilities. As a younger company, it lacks the decades-long track record of the big six-era names.

9. SmartestEnergy

SmartestEnergy specialises in renewable supply for industrial and commercial customers, including corporate power purchase agreements and detailed consumption reporting. Businesses with serious sustainability targets and sizeable demand will get the most from it. It is not really designed for microbusinesses or the smallest shops.

10. Pozitive Energy

Pozitive Energy has grown quickly on the back of fast onboarding, a tech-led account platform and relatively flexible credit terms, which can help firms that struggle with strict credit checks elsewhere. It is a practical option for SMEs wanting quick switching. As with any fast-growing supplier, some customers report inconsistencies in billing, so keep an eye on statements.

How to choose between them

• Compare like with like. Quotes vary by contract length, standing charge and unit rate, so line them all up on the same terms.
• Check the renewal process. Some suppliers roll you onto expensive out-of-contract rates if you miss the window.
• Think beyond price. Green credentials, billing accuracy and support quality all matter over a multi-year term.
• Use a broker for leverage. A service such as Utility Bidder can push suppliers to sharpen their pricing in a way individual firms rarely can.

FAQs

Can I switch business energy supplier mid-contract? Usually not without exit fees. Most firms agree a new deal in their renewal window, which typically opens up to six months before the end date.

Is business energy cheaper than domestic? Unit rates are often lower, but businesses pay the Climate Change Levy and 20% VAT in most cases, and there is no price cap.

Do brokers charge businesses a fee? Most, including Utility Bidder, are paid commission by the supplier, usually built into the unit rate. Ask how it works before you sign.

The bottom line

All nine suppliers here are credible, but the prices they offer any individual business vary enormously. The quickest way to find out which is offering the best deal for your usage is to get a comparison from Utility Bidder and let its team negotiate the rest.