Best Price Business Electricity Suppliers UK 2026

Last updated: 29 October 2026

Which business electricity supplier has the best price? There is no single cheapest supplier: as of 29 October 2026, on Bionic’s published October panel averages, EDF Energy gives the lowest yearly cost for a small business using 9,234kWh, about £2,835 at 28.3p per kWh and 60.8p a day, while SSE’s 23.6p unit rate makes it the lowest-cost option for a site using 80,000kWh, despite a 310.7p daily standing charge. The best price depends on your usage, your meter and your contract length, and a low unit rate can be wiped out by a high standing charge. This SwitchSquid guide ranks ten suppliers by yearly cost at three usage levels, with worked examples for HMO landlords and care homes, so you know what a good quote looks like before you ask for one. If you request quotes through this page, we may be paid by the supplier you choose; it does not change the price you are quoted.

Sources: Bionic business electricity rates, October 2026, Ofgem, get a business energy contract and WeSave latest business electricity rates, checked on 28 and 29 October 2026.

Why the cheapest unit rate is not always the best price

Every business electricity contract has two prices: a unit rate for each kWh you use, and a daily standing charge you pay whatever you use. Suppliers balance them differently. Some offer a very low unit rate with a high standing charge; others do the reverse. Which one costs you less depends entirely on how much electricity your premises uses.

The formula is simple: yearly cost = (yearly kWh × unit rate) + (365 × daily standing charge). A low-use site, such as the communal supply in a house in multiple occupation (HMO), pays mostly standing charges, so it should look for a low daily charge. A high-use site, such as a care home running laundries, kitchens and heating around the clock, pays mostly for units, so the unit rate matters most.

That is why headline lists of “cheapest suppliers” can mislead. Our business electricity standing charge guide explains the daily charge in more detail.

Business electricity suppliers ranked by yearly cost: October 2026

Bionic publishes the average unit rate and standing charge it secured from each supplier on its panel. Its October figures cover 1 to 12 October 2026, include its maximum commission and exclude VAT, and are based on an average electricity use of 9,234kWh a year. We have applied those averages to three usage levels to show how the ranking changes. Figures were checked on 29 October 2026.

The table is sorted by yearly cost at 9,234kWh, Bionic’s average. Yearly costs are our calculation from Bionic’s published averages, excluding VAT and the Climate Change Levy, and rounded to the nearest pound. They are a guide to how each supplier tends to price, not a quote: a large site’s real quotes will differ from averages built around smaller customers.

What the ranking tells you

• Low use, around 3,500kWh: EDF Energy at about £1,212 a year and British Gas at about £1,239 come out cheapest because their standing charges are low. SSE, with the lowest unit rate, is the most expensive at about £1,960.

• Average use, around 9,234kWh: EDF Energy still leads at about £2,835, with Valda Energy at about £2,886 and Yu Energy at about £2,925. The gap between first and last is about £478 a year.

• High use, around 80,000kWh: the order flips. SSE becomes the lowest-cost at about £20,014, followed by Yu Energy at about £20,900. E.ON Next is about £4,992 more than SSE at this level.

Bionic also publishes averages by business size for the same period: 28.4p per kWh and 58.0p a day for micro businesses using 5,000 to 15,000kWh, 27.2p and 118.9p for small businesses using 15,000 to 25,000kWh, 27.7p and 90.1p for medium users, and 26.1p and 173.0p for sites using more than 55,000kWh. WeSave’s October list showed cheaper indicative one-year fixed unit rates, of 25.60p per kWh for businesses using under 5,000kWh and 24.551p for 5,000 to 49,999kWh. The spread between the average and the cheapest shows why comparing several quotes pays off. Our business electricity prices per kWh and micro business electricity prices guides go deeper.

Best price for HMO landlords

HMO landlords often have two kinds of supply: a landlord supply for communal areas such as hallways, stair lighting, fire alarms and shared kitchens, and supplies that serve tenants’ rooms when bills are included. Communal supplies are often low-use, which makes the standing charge the bigger part of the bill.

Worked example: a landlord supply using 3,500kWh a year. On Bionic’s averages, EDF Energy would cost about £1,212 a year and British Gas about £1,239, while SSE would cost about £1,960. Picking on unit rate alone would cost this landlord around £748 a year more than picking on total cost.

VAT matters too. Electricity supplied to a landlord for tenants’ domestic use is charged at 0% VAT from 1 October 2026 to 31 March 2027, but only if your supplier knows the supply is for domestic use, usually through a VAT declaration. Without one, business supplies are often billed at 20%. Our HMO electricity VAT guide explains the paperwork, and HMO energy costs per room and business energy for HMO landlords cover the rest.

Best price for care homes

Care homes are among the highest-use small business premises: lighting, laundry, kitchens, lifts, medical equipment and often electric heating run every day of the year. At high usage the unit rate dominates the bill, and the ranking above changes completely.

Worked example: a home using 80,000kWh a year. On Bionic’s published averages, SSE would cost about £20,014 a year, Yu Energy about £20,900 and Smartest Energy about £21,668, compared with about £22,862 for EDF Energy and £25,006 for E.ON Next. A difference of 1p per kWh on 80,000kWh is worth £800 a year, so even small differences in unit rate are worth negotiating.

Care homes may also pay less VAT and Climate Change Levy on supplies used for residents. HMRC treats homes providing care for the elderly or disabled as qualifying residential accommodation, and electricity for qualifying residential use carries 0% VAT from 1 October 2026 to 31 March 2027, with no Climate Change Levy, but only if your supplier has your declaration. See our care home electricity VAT guide, care home energy costs per bed and business energy for care homes for more.

What about Octopus Energy for Business?

Many business owners ask about Octopus Energy’s business tariffs. Octopus is not on the supplier list Bionic publishes, so we have no like-for-like average to add to the table, and we will not guess one. If you are weighing Octopus, ask for its quote on your real yearly kWh and compare the total cost in the same way. Our Octopus business energy guide covers how its business tariffs work, and small business electricity suppliers profiles the wider market.

How to get the best price from any supplier

1. Find your real usage. Your bill shows your yearly kWh, or estimated annual consumption, and your MPAN, the 21-digit number that identifies your meter.

2. Know your end date. Bionic notes that switching windows usually open up to six months before your contract ends, and a business switch can take around six weeks. Starting early gives you more quotes to choose from.

3. Compare total yearly cost. Use the formula above, not the unit rate alone.

4. Check contract length. One-, two- and three-year fixes are priced differently. A longer fix gives certainty but less flexibility.

5. Avoid default rates. Ofgem says deemed and out-of-contract rates are usually higher than negotiated contracts. See our guides to deemed rates and business electricity tariffs explained.

Ofgem defines a microbusiness as one with fewer than 10 employees and turnover or a balance sheet of no more than £2 million, or one using up to 100,000kWh of electricity a year. Many HMO landlords and smaller care homes qualify, which brings extra protections on contract information and notice periods.

Fit summary

• Low-use sites and HMO communal supplies: favour low standing charges; on October averages, EDF Energy and British Gas led.

• Average small businesses around 9,000 to 10,000kWh: EDF Energy, Valda Energy and Yu Energy were closest on total cost.

• High-use sites such as care homes: favour low unit rates; SSE and Yu Energy led at 80,000kWh.

• Consider alternatives if: your contract has more than six months to run, in which case note the date and come back closer to the switching window.

Important conditions

• Supplier figures are Bionic’s panel averages for 1 to 12 October 2026, including its maximum commission and excluding VAT. Your quotes will depend on your location, meter, usage, contract length and the supplier’s own checks.

• Yearly costs in this guide are our calculations from those averages and exclude VAT and the Climate Change Levy.

• WeSave figures are its cheapest indicative one-year rates published for October 2026, checked on 28 October.

• Our quote service is for business premises and non-domestic meters only.

FAQ

Who is the cheapest business electricity supplier?

It depends on how much you use. On Bionic’s October 2026 averages, EDF Energy had the lowest yearly cost at 9,234kWh, about £2,835, while SSE was cheapest at 80,000kWh because of its 23.6p unit rate. Get quotes based on your own yearly kWh.

What is a good business electricity rate per kWh in October 2026?

Bionic’s average for micro businesses was 28.4p per kWh with a 58.0p daily standing charge. WeSave’s cheapest indicative one-year rate was 24.551p for businesses using 5,000 to 49,999kWh. A quote near or below those levels, with a reasonable standing charge, is competitive.

Is a low standing charge or a low unit rate better?

A low standing charge suits low-use sites, because the daily charge makes up most of the bill. A low unit rate suits high-use sites, such as care homes. Work out the total yearly cost to compare fairly.

Which supplier is cheapest for an HMO landlord supply?

For a low-use landlord supply of around 3,500kWh, EDF Energy and British Gas had the lowest yearly costs on Bionic’s October averages, at about £1,212 and £1,239. Make sure your supplier also has a VAT declaration for any tenants’ domestic use.

Which supplier is cheapest for a care home?

For a high-use site of around 80,000kWh, SSE and Yu Energy had the lowest yearly costs on Bionic’s averages, at about £20,014 and £20,900. Real quotes for large sites vary, so compare several. Check that qualifying residential supplies are set up for the lower VAT rate.

When should I start comparing business electricity prices?

Up to six months before your contract ends, when switching windows usually open. A business switch can take around six weeks. Starting early helps you avoid out-of-contract rates.

Final decision card

The best price business electricity supplier is the one with the lowest total yearly cost for your usage, not the lowest unit rate. On October 2026 averages, EDF Energy and British Gas suited low-use HMO supplies, EDF Energy led for average small businesses, and SSE and Yu Energy suited high-use care homes. Get quotes on your real yearly kWh, compare the totals, and fix before your contract ends. Prefer a guided route? Use Squid AI to get started.