EDF Energy Business Dual Fuel

Affiliate disclosure: we may earn a commission if you take out a product through links on this page. It costs you nothing extra and does not influence how providers are listed.

EDF publishes what it charges a business that has no contract, re-dates the figures every month, and from 1 October 2026 those prices are 46.192p per kWh for electricity and 15.293p per kWh for gas. Both are deemed rates, the ones that apply when nobody has signed anything, and EDF puts them on its own website as dated rate cards alongside the standing charges that go with them. Very few suppliers publish this much, and none of it is behind a quote form.

The contracts are written by EDF Energy Customers Limited, company 02228297, incorporated on 8 March 1988 as LEB (Contractors) Limited and registered at Nova North, 11 Bressenden Place, London SW1E 5BY. Its business supply arm is the larger half of the company: 556,200 electricity meter points and 34.5 TWh sold to non-domestic customers in the year to 31 December 2024, on revenue of £8,674.9m, against 3,113,300 household electricity accounts and £3,037.1m. EDF describes itself on its small business pages as “Britain’s biggest generator of zero carbon electricity”, and its fixed business contracts run one, two, three or four years.

One thing to settle before any comparison. EDF sells very little gas to business: the same statement records 52,600 non-domestic gas meter points against those 556,200 electricity ones, which is roughly one gas account for every eleven. There is no both-fuels plan on the small business site, no dual-fuel discount mentioned anywhere on it, and the quote journey asks for a meter type rather than a pair of them. A firm buying gas and electricity here signs twice and carries a daily charge on each supply, and on the out-of-contract rates those two daily charges come to £10,389.21 a year in London before a single unit is burned.

Three published prices, and which one you land on is about how you got there

Business energy is normally quoted rather than listed, so the striking thing about EDF is how much of it sits in the open. Its document library carries a dated rate card for every no-contract price it charges, replaced month by month, and on 27 October 2026 the current set all ran from 1 October.

There are three of them and they are not alternatives a buyer chooses between. Deemed prices apply when a business takes over premises and never signs anything: 46.192p per kWh of electricity and 15.293p of gas. Extended Supply prices apply when a fixed contract has ended and nothing has replaced it, which the small business terms define as “the price that you will pay for your Fixed Rate Supply if your Tariff comes to an end for any reason”, adding that they “may be higher than your existing prices”: 55.470p and 19.526p. And a third card, headed Former Tariff, prices electricity at 34.641p per kWh with a flat 491.21p a day for customers who have never changed supplier since 2001 and never signed a fixed deal.

Read in order that is an odd ladder. The cheapest published unit rate on EDF’s business electricity list, 34.641p, belongs to the group that has done nothing for twenty-five years; the dearest, 55.470p, belongs to the group whose contract lapsed. Between them sits the deemed rate at 46.192p, 33.4% above the legacy price. None of this is hidden and none of it is explained on the pages a buyer reads — the rate cards live in a document library on the large business side of the site, not on the small business pages where a shop or a café would look.

On electricity the lapsed-contract price is dearer by the unit and cheaper by the day

Put the two no-contract electricity cards side by side and they do not simply rank. Extended Supply charges 55.470p a kWh against the deemed 46.192p, which is 20.1% more. But its daily charge is lower everywhere: 341.34p against 404.10p in London on the lowest band, 995.30p against 1,178.32p on the Manweb network at the top band. The reduction is the same proportion in every one of the seventy cells on the two tables, 15.5%, which looks like a deliberate rebalancing rather than two prices set independently.

That has a consequence EDF does not spell out. For a small enough user the dearer-sounding price is the cheaper one. A London site on the No Residual band saves 62.76p a day by sitting on Extended Supply and pays an extra 9.278p on every unit, so the two cross at 2,469 kWh a year. Below that the lapsed-contract price costs less; above it the deemed price does. On Manweb at Band 4 the crossover is 7,200 kWh, because the daily saving there is nearly three times as large. Both of those sums are ours, from EDF’s own published cards.

Gas does not behave that way at all. The out-of-contract gas card is higher on both halves — 2,505.02p a day against 1,128.04p, which is 2.22 times, and 19.526p a unit against 15.293p, which is 27.7% more. So a two-fuel business whose contract lapses sees its electricity bill tilt and its gas bill simply rise. There is no crossover on gas and no usage at which the lapse is anything but expensive.

One gas price for the whole country, seventy for electricity

The gas card is four numbers wide. Meter type Standard, standing charge 1,128.04p a day, unit rate 15.293p, and a note that the charge is applied per meter. A corner shop in Truro and a unit in Inverness pay the same.

Electricity takes two pages. The unit rate is national, but the daily charge is set by a grid of fourteen distribution zones — Eastern, East Midlands, London, Manweb, Midlands, Northern, Norweb, Scottish Hydro, Scottish Power, Seeboard, Southern, Swalec, South Western and Yorkshire — crossed with five rows labelled No Residual and Bands 1 to 4. That is seventy published daily charges for one tariff, running from 404.10p in London on No Residual to 1,178.32p on Manweb at Band 4. The spread is 2.92 times, and nothing about it is within the customer’s gift: the bands come from the Targeted Charging Review, they are assigned from network data, and EDF’s own footnote says that “If a site’s banding can not be determined, an equivalent banding will be used”.

For a business taking both fuels that is the whole shape of the bill. At EDF’s deemed prices a London site pays £1,474.96 a year of electricity standing charge and £4,117.35 of gas standing charge: £5,592.31 before any energy. On the out-of-contract card the same pair is £1,245.89 and £9,143.32, or £10,389.21. Work out where the gas standing charge stops being the larger part of the gas bill and the answer is 26,923 kWh a year on the deemed card and 46,826 kWh on the out-of-contract one. A café with a small boiler will not reach either. Those three sums are ours, worked from EDF’s published rates over a 365-day year.

What nine months did to a price nobody is given notice of

Because the cards are dated and archived, the movement is provable rather than asserted, and it is the best reason to read them. The deemed gas card effective 1 January 2026 priced gas at 7.031p a kWh with an 893.86p daily charge. The card effective 1 October 2026 prices the same supply at 15.293p and 1,128.04p. The unit rate has more than doubled, up 117.5%, and the standing charge is up 26.2%, in nine months.

Electricity moved too, if less violently: the deemed unit rate went from 36.839p on 1 January to 46.192p on 1 October, up 25.4%, while the January daily charge for London on No Residual was 355.58p against today’s 404.10p. On the out-of-contract gas card the March 2026 figures were 2,092.10p a day and 13.007p a unit, so by October the unit rate had risen 50.1% and the daily charge 19.7% inside seven months.

What a business is told about any of this is the part worth knowing. The small business terms say a variable price “can increase (or decrease) at any time during the contract” and that “Any changes will apply from the date we publish them on our website or notify you”. Publication is enough. There is no stated number of days, and the practical effect is that the archive of rate cards is the notice: a firm that does not read a document library it has never been pointed at finds out when the bill arrives. Credit where it is due — the cards exist, they are dated, and the old ones are kept, which is more than most suppliers manage. The gap is in who is told they are there.

A tariff with no daily charge at all, described by two different numbers

EDF is one of the few business suppliers to publish a Zero Standing Charge tariff, and on a two-fuel supply, where the daily charge lands twice, it is the most interesting product on the site. The pitch is plain: “You only pay for energy when you’re active”, aimed at firms that trade seasonally or shut for part of the week. Given the arithmetic above — a gas standing charge that outweighs the gas itself below 26,923 kWh — a village hall or a holiday let is exactly the customer it should suit.

Two things stop the page doing its job. The first is that it contradicts itself on who qualifies: the body text reads “If your annual consumption is over 3,900 kWh for electricity and over 5,000Wh for gas, then you’ll be eligible for this tariff”, while the page’s own meta description — the line a searcher reads before clicking — gives 3,500 kWh for electricity. The gas figure, 5,000Wh, is five kilowatt hours written as five thousand watt hours, which no premises on earth would fail to exceed and is plainly meant to be 5,000 kWh. Three published figures, two of which cannot both be right.

The second is that no unit rate is published for it anywhere, so the trade-off that decides whether it is worth having cannot be examined without taking a quote. EDF’s own standing-charge explainer concedes the shape of it — “Small business customers are seeing some tariffs that offer zero standing charges but higher unit rates” — and that article carries the date “Posted June 26, 2024”. A business can work out its own break-even in a minute if it has the two numbers. It has one.

Leaving early costs twice as much if a broker signed you up

The early termination fee in the small business terms has two halves. The energy component is the difference between the original and the current market rate multiplied by unused volume, and the terms say that where that comes out negative or zero “there shall be no Energy Component” — so a customer leaving into a dearer market is not charged for the energy at all, which is fair and is not universal.

The fixed-cost component is the one to read. It multiplies unused volume and unused days by the contract’s rates and then by a contract percentage, and that percentage is “5% if you agreed your contract directly with EDF or 10% if you came indirectly via a Third Party Intermediary (TPI)”. The same customer, the same meter, the same remaining term: the exit fee doubles because a broker introduced the deal. EDF describes the total as “a genuine pre estimate of the losses”, and clause 6.4.4 adds that once the contract ends “you will be moved on to our Extended Supply Prices until you change supplier or agree a new contract with us” — the 55.470p and 19.526p rates above.

That clause sits in a market the regulator has only just begun to reach. Ofgem published a Third-Party Intermediaries Market Review call for input on 4 June 2026, with responses due by 16 July 2026, estimating that “there could be over 2,000 operating in the whole sector” and citing a departmental estimate that “approximately 50% of SMEs and 80% of industrial and commercial consumers use TPIs”. Half of small businesses, in other words, buy through the route that doubles this fee. Ofgem’s stated aim is powers to “set rules, monitor the market and take action where harm occurs, across both homes and businesses”. Until that lands, the 5% and the 10% are both lawful and both published, and the choice of door is the customer’s to make with the numbers in front of them.

The segmental statement says who this supplier is really built for

Standard Licence Condition 19A makes EDF publish a Consolidated Segmental Statement splitting its supply business four ways, and nobody quotes it. The 2024 edition, reconciled to EDF Energy Customers Limited’s accounts under FRS 101, is the clearest picture of the business available anywhere.

Non-domestic supply turned over £8,801.5m in the year to 31 December 2024 against £4,730.2m from households. Non-domestic electricity alone was £8,674.9m on 34.5 TWh across 556,200 meter points; non-domestic gas was £126.6m on 61.6 million therms across 52,600 meter points. Earnings before interest and tax came to £150.1m on business electricity and £6.4m on business gas, against £164.2m on household electricity and a loss of £92.0m on household gas. Divide revenue by meter points and the average business electricity account billed about £15,597 that year against roughly £976 for a household one, and the average business gas account about £2,407. Those three divisions are ours.

Two further numbers from the same statement put the margin in proportion. Business electricity revenue works out at about 25.1p per kWh across the year, direct fuel cost at 13.2p and total operating costs at 24.6p, leaving a little over 0.4p of EBIT on each unit — a 1.73% margin on the fuel that makes nearly two thirds of the company’s supply revenue. The statement also sets out how shared costs are split, “allocated using appropriate activity drivers, such as customer contact volumes and account volumes”, which is worth knowing before reading too much into either figure. What the document settles is simpler: this is a business-energy company with a household arm attached, and the gas side of the business book, at 52,600 meters, is the smallest thing in it.

The green claim, and the line underneath it in EDF’s own table

Business electricity is where EDF has something a competitor cannot copy, and it is worth stating plainly. Its disclosed fuel mix for April 2025 to March 2026 is 41.1% nuclear against a UK average of 13.7%, which is why its 173g of CO2 per kWh sits where it does even with 23.0% renewable against the national 48.0%. Its Fixed Renewable business tariff is matched unit for unit and backed by Renewable Energy Guarantees of Origin, with assurance from the Carbon Trust for the year ended 31 March 2025 under the Greenhouse Gas Protocol Scope 2 guidance.

The table also carries a product row headed Zero carbon, which is 100% nuclear, 0g of CO2 — and 0.0060g of radioactive waste per kWh, against 0.0025g for EDF’s supply as a whole and 0.0000g on the renewable product. That is not an accusation; it is a consequence of taking a zero-carbon product from a nuclear fleet, it is published by EDF itself, and a business choosing between the renewable tariff and the zero carbon one should see both columns rather than the carbon one alone.

One housekeeping failure sits on top of it. EDF’s central fuel mix page carries the April 2025 to March 2026 figures above. Its small business renewable tariff page still carries the previous year — 54.8% nuclear, 18.2% renewable, 135g of CO2 — and on that page EDF states that “Our fuel mix for the period April 2025 to March 2026 will be published on 1 October 2026”. It was. The business page has not caught up, and on 27 October 2026 a small business reading it was being shown a superseded mix with a nuclear share 13.7 points too high and a carbon figure 38g too low.

Where the paperwork gives out

EDF publishes a complaints performance page and the figures on it are specific: 46,534 complaints in April, May and June 2026, 965 per 100,000 accounts, 62% resolved by the end of the next working day and 86% inside eight weeks, with customer service the largest category at 33%. Every one of those figures is labelled domestic. There is no business or SME line anywhere on the page, so a firm comparing suppliers on service has household numbers or nothing, and no ratings agency fills the gap either: Defaqto and Fairer Finance do not reach business energy supply, and the Citizens Advice star rating covers domestic supply only.

The route out is better than it was. The Energy Ombudsman has handled microbusiness disputes for years and extended its remit to small businesses in December 2024; the maximum award for a non-domestic energy supply dispute rose from £10,000 to £20,000 on 19 December 2024, while the separate brokers scheme stayed at £10,000. In the first year of the wider remit the service reported “more than 13,000 microbusinesses” raising disputes and “just over 400 small businesses”, with Chief Ombudsman Ed Dodman saying it was “really encouraging to have seen over 400 small businesses use our service in its first year”. Four hundred, out of a population of millions, is the number that tells you how little known the route is.

Three smaller things did not stand up to a read. The document EDF’s own library lists as “Tariff Business NHH Electricity prices from 1 October 2026” is headed, inside, “Former Tariff Business Electricity Prices Effective from 1 April 2026” and says “The prices stated here apply from 1 April 2026” — six months between the label and the document. The small business terms promise a Statement of Renewal Terms “at least 60 days” before a fixed period ends while the small business FAQ says the renewal letter arrives “90 days” before the contract end date. And the business site gives three different sets of opening hours for the same customers across three pages, one of them twice on a single page: 9am to 5pm, 9am to 6pm and 8am to 6pm Monday to Thursday.

Figures were taken from each provider's own published terms on 27 October 2026. Variable rates can change at any time — confirm the current rate with the provider before applying.