"Small business energy supplier" is a category that exists in marketing copy more reliably than it exists in supplier procurement practice. Several of the headline-name suppliers in the UK non-domestic market actively decline to quote a microbusiness drawing under 25,000 kWh per year, while a smaller group of specialist and challenger suppliers shape their entire commercial proposition around exactly that customer. Knowing which is which saves a microbusiness 90% of the quote-chasing time.
TL;DR
- Octopus for Business, British Gas Lite, and So Energy Business publish microbusiness electricity and gas rates accessible without a broker as of May 2026.
- Yu Energy, Pozitive Energy, Crown Gas and Power, and Total Gas and Power actively quote SME customers, with varying minimum consumption thresholds.
- The Ofgem microbusiness definition gates supplier access: under 100,000 kWh annual electricity, under 293,000 kWh annual gas, fewer than 10 employees, or under 2 million euros turnover.
- Several large industrial-focused suppliers (Drax, SmartestEnergy, Hudson Energy) typically decline quotes below 30-50,000 kWh per year.
- Distinguishing "published rate" suppliers from "bespoke quote" suppliers is the single most useful filter for an SME procurement exercise.
Last reviewed: May 2026
The Ofgem microbusiness definition is the first filter
The UK non-domestic energy market is not a single market. Ofgem's microbusiness definition draws a line that gates supplier access, contract protections, and pricing route. A business meeting any one of the following criteria is classed as a microbusiness for energy supply purposes: fewer than 10 employees (or full-time equivalent) and annual turnover under 2 million euros; annual electricity consumption under 100,000 kWh; or annual gas consumption under 293,000 kWh.
Microbusinesses get specific Ofgem-set protections (renewal notification timing, written termination notice acceptance, TPI commission disclosure rights from December 2024). They also get less attention from supplier sales desks, because the margin per site is lower and the cost-to-serve is roughly the same as a larger non-domestic account.
The supplier landscape sorts itself accordingly. A subset of suppliers explicitly target microbusiness. A different subset accept microbusiness customers but prefer larger ones. A third subset will not quote a microbusiness at all and route the enquiry away.
Suppliers that actively quote microbusiness in May 2026
The list below reflects supplier-side procurement signals visible in May 2026: published microbusiness rate pages, broker panel inclusion criteria, and direct quote response patterns. It is not a recommendation league table; it is a procurement-relevance filter.
- Octopus for Business: publishes microbusiness electricity and gas tariffs on its business website, takes direct quote requests through a self-serve flow, and operates a sales team for larger SMEs. The published-rate model is unusual in the non-domestic market.
- British Gas Lite: the British Gas non-domestic brand designed for sub-50,000 kWh sites. Direct quote portal, dedicated SME pricing.
- So Energy Business: launched as a domestic supplier, now serves SME customers with a published-rate model that mirrors its domestic approach.
- Yu Energy: AIM-listed challenger supplier focused on UK SMEs, accepts direct quote requests and through-broker requests across a wide consumption band.
- Pozitive Energy: SME-focused supplier, primarily broker-channel but accepts direct enquiries, with a particular focus on multi-site SME chains.
- Crown Gas and Power: gas-focused supplier serving non-domestic SMEs, accepts direct enquiries within a defined consumption range.
- Total Gas and Power (now TotalEnergies Gas and Power): serves SMEs and larger non-domestic customers, broker-led but direct route available.
- EDF Energy Business: serves SMEs above microbusiness threshold reliably; microbusiness pricing available but less prominently published than at Octopus.
- E.ON Next Business: launched as an SME-focused arm of E.ON Next, takes microbusiness customers through a direct quote route.
- ScottishPower Business: serves SMEs across consumption bands, broker-heavy but direct route available.
- SSE Business Energy (now OVO Business in some markets): serves SMEs above microbusiness threshold most readily, microbusiness available.
The list is not exhaustive.
There are roughly 50 active non-domestic supply licences in the GB market according to Ofgem's published supplier list. The 11 named above are those most consistently visible in microbusiness procurement in May 2026.
Suppliers that typically do not quote microbusiness
Several suppliers focus on industrial and large commercial customers and have minimum consumption thresholds that exclude microbusinesses.
- Drax Energy Solutions: generally requires a minimum site profile above the microbusiness threshold; specialism is industrial and large commercial.
- SmartestEnergy: typically serves sites above 100,000 kWh per year, with a focus on flexible procurement and corporate PPAs.
- Hudson Energy: mid-market to large commercial focus; not generally a microbusiness destination.
- Engie: large commercial and industrial customers, including public sector procurement; rarely a microbusiness destination.
- Centrica Business Solutions: the larger-commercial arm of the Centrica group (distinct from British Gas Lite), focused on flexible procurement and complex contracts.
The catch is that a microbusiness submitting a quote request to one of these suppliers usually receives either no response or a redirection to a broker panel.
The procurement effort is wasted.
Published rate vs bespoke quote: the cleanest distinction
The single most useful filter for an SME procurement exercise is whether the supplier publishes microbusiness rates online or requires a bespoke quote. The two models differ in transparency, in negotiation room, and in broker dependency.
| Supplier | Microbusiness quote route | Typical minimum kWh per year | Best fit for |
|---|---|---|---|
| Octopus for Business | Published rate online, direct sign-up | No published minimum | Microbusinesses wanting price-list transparency |
| British Gas Lite | Direct portal, instant quote | No published minimum (sub-50,000 kWh focus) | Sub-50,000 kWh sites, single-supplier preference |
| So Energy Business | Published rate, direct sign-up | No published minimum | Microbusinesses with steady-load profile |
| Yu Energy | Direct quote, 24-72 hour response | No published minimum, broad SME band | SMEs comfortable with quote-and-compare |
| Pozitive Energy | Broker-led, direct quote possible | Typically 10,000+ kWh per year | Multi-site SME chains |
| Crown Gas and Power | Direct quote (gas only) | 10,000+ kWh per year typical | Gas-only or split-fuel SMEs |
| TotalEnergies Gas and Power | Broker-led, direct quote possible | Typically 25,000+ kWh per year | Established SMEs above microbusiness threshold |
| EDF Energy Business | Direct quote | No published minimum (microbusiness accepted) | Microbusinesses wanting an incumbent supplier |
| E.ON Next Business | Direct quote, online | No published minimum | Microbusinesses wanting digital-first sign-up |
The figures in the "typical minimum" column reflect supplier sales practice as observed in May 2026 quote responses, not formally published thresholds. Suppliers vary their effective threshold based on capacity, region, and quote volume; a microbusiness in one DNO region may be quoted readily while one in another is declined for the same consumption profile.
The regional supplier-availability picture
UK supplier coverage is not uniform across the 14 DNO regions. A microbusiness in the Northern Scotland DNO area has materially fewer suppliers actively quoting than one in London. The reason is partly cost-to-serve (a remote rural site costs more per pound of revenue) and partly meter operator coverage (some suppliers do not have a metering contract that covers the SSEN North network).
Octopus, British Gas Lite, EDF, and Yu Energy have the broadest GB coverage in May 2026 across all 14 DNO regions. Smaller challenger suppliers sometimes operate within a narrower geographic footprint or skew their pricing materially across regions, with the rural Scottish and Welsh regions priced highest.
A bakery in Stornoway received three quotes in April 2026 for a 14,000 kWh annual electricity supply: 38p per kWh from Octopus for Business, 41p per kWh from a national broker quoting an unnamed panel supplier, and no response from two of the larger named suppliers. The same business profile in the Eastern (EPN) DNO region would expect to receive 5-7 viable quotes.
Microbusiness gas: a thinner market than electricity
The UK non-domestic gas supplier market is materially thinner than the electricity market, particularly at the microbusiness end. Crown Gas and Power, Corona Energy, CNG Energy, and the larger dual-fuel suppliers (British Gas Lite, EDF, ScottishPower, SSE) cover most of the microbusiness gas demand.
Here is where it breaks for some SMEs. A dual-fuel microbusiness can find that the cheapest electricity supplier does not offer competitive gas (or any gas) at its consumption level. The procurement effort then splits: one process for electricity, a separate one for gas. The administrative cost of splitting fuels is real, and it is one reason many microbusinesses default to dual-fuel even when the unit-rate maths argues against it.
How to identify which suppliers will quote your specific business
The working method to test supplier interest before investing time in a full quote process: pull the MPAN and MPRN from the most recent bill, identify the DNO region from the first two digits of the MPAN (the profile and meter time switch code), record the annual kWh from the bottom of the bill, and submit the same set of details through each candidate supplier's microbusiness portal in parallel. Suppliers that respond within five working days are in the running. Suppliers that route the enquiry to a broker, ask for more information than was submitted, or do not respond within 10 working days are not realistically in scope for that profile.
The published-rate suppliers (Octopus for Business, British Gas Lite, So Energy Business) typically respond instantly because no salesperson is involved. The bespoke-quote suppliers take 24-72 hours. The ones that take longer than five working days are signalling, in practice if not in writing, that the profile is outside their preferred customer band. A microbusiness procurement exercise that runs through this filter in a single morning produces a viable shortlist of three to five suppliers, which is a more useful position than waiting four weeks for one broker to come back with a panel quote. The filter works because it separates suppliers actively chasing microbusiness volume from those tolerating it. The two groups behave differently across the contract life: the active suppliers tend to renew on competitive terms; the tolerating ones tend to send a renewal quote 20-30% above the open market and rely on the customer's inertia. The supplier-side data on renewal-vs-switch behaviour is published in summary form by Ofgem in its quarterly retail market indicators, which sit alongside the data portal series.
Editorial disclaimer. KaelTripton is an independent UK publisher. This article is editorial, not personal financial or energy procurement advice. Rates, caps, grant levels and supplier offers move; verify any figure with the named primary source before acting on it. KaelTripton does not earn commission from suppliers or brokers mentioned.
Frequently asked questions
Which UK suppliers actively quote microbusiness electricity in 2026?
Octopus for Business, British Gas Lite, So Energy Business, EDF Energy Business, E.ON Next Business, Yu Energy, and ScottishPower Business all accept microbusiness electricity quotes directly as of May 2026. Several others quote through broker panels.
What is the Ofgem microbusiness definition?
Ofgem defines a microbusiness as one meeting any of: fewer than 10 employees and annual turnover under 2 million euros; annual electricity use under 100,000 kWh; or annual gas use under 293,000 kWh. Microbusiness status triggers specific Ofgem contract and renewal protections.
Do all suppliers publish their microbusiness rates?
No. Octopus for Business, British Gas Lite, and So Energy Business publish microbusiness rates online in a self-serve format. Most other non-domestic suppliers route quotes through a bespoke desk or broker panel.
What happens if no supplier responds to a microbusiness quote request?
The site continues on its current contract until renewal, at which point the customer can either accept the renewal rate offered by the existing supplier or seek alternative quotes again. The Citizens Advice consumer energy pages cover the procedural options.
Are challenger suppliers always cheaper than incumbents?
No. Challenger suppliers can be cheaper on specific profiles, but pricing varies by region, consumption, and contract length. The honest comparison is between actual quotes for the specific site, not by supplier reputation.
Does the supplier landscape differ in Northern Ireland?
Yes. The Northern Ireland energy market is regulated by the Utility Regulator NI and has a different supplier landscape (Power NI, Electric Ireland NI, Click Energy, SSE Airtricity, Budget Energy, and others). The suppliers listed in this article are GB-market suppliers.
Sources
- Ofgem - Energy advice for businesses, microbusiness definition and protections
- Ofgem - Energy data portal, non-domestic supplier list and market share Q1 2026
- Citizens Advice - Energy supply guidance for small business customers
- Ofgem - Non-domestic market review, TPI rule changes implementation
- DESNZ - Quarterly Energy Prices, non-domestic series May 2026
- Ombudsman Services - Energy, microbusiness dispute resolution scope
