EDF: tariffs, service and company profile

EDF Energy is the UK's fifth-largest energy supplier, French-owned and part of the big six alongside British Gas, E.ON Next, Octopus Energy, OVO Energy and ScottishPower¹. It began operating in the UK in 2002 and supplies over 3.7 million buildings, covering homes and businesses². The company is owned by Electricity of France, a French government-owned company headquartered in Paris, and trades in the UK under the licence held by EDF Energy Customers Ltd².

For a household, EDF is a conventional grid supplier: it buys and resells electricity and gas, bills for what is used, and offers fixed, variable, prepayment and specialist tariffs. It does not make a home self-sufficient. The dependence it creates is on the grid, on a gas supply where gas is used, and on the supplier's billing and support systems. What it does offer is a large supplier with a formal complaints route, a Priority Services Register, hardship support and a prepayment fixed tariff that few competitors match.

EDF at a glance: ownership, size and status

EDF Energy is a French-owned supplier that started operating in the UK in 2002, and it is the UK's fifth-largest energy supplier¹. Its scale is domestic as well as industrial: it powers over 3.7 million buildings across homes and businesses². The parent is Electricity of France, a French government-owned company headquartered in Paris, which means the ultimate owner is a foreign state rather than a private shareholder group².

That ownership structure matters for how the supplier behaves. A state-owned parent is not exposed to the same takeover or collapse dynamics as a privately held challenger, and EDF has not been through the supplier failures that removed dozens of smaller brands from the market. It is also a member of Energy UK, the industry trade body that represents firms including British Gas, Scottish Power and EDF Energy⁵. Alongside supply, EDF holds a Mandatory FIT Licensee role, which places it among the suppliers that administer Feed-in Tariff payments⁶.

The company's compliance record is not spotless. Ofgem's review of how suppliers support customers in vulnerable situations placed EDF in a first group of suppliers with minor weaknesses, alongside British Gas, Bulb, E.ON, Ovo, Scottish Power and Utility Warehouse⁷. Separately, in the Smart Export Guarantee annual report for Year 5, EDF and ScottishPower submitted their annual data after the 30 June deadline, recorded as incidents⁸. Both are administrative findings rather than supply failures, but they are part of the picture for a household weighing a large supplier against a smaller one. The wider market context is set out in UK energy suppliers.

Tariffs: fixed, variable, EV, heat pump and prepayment

EDF's tariff range follows the standard supplier menu. Tariffs offered by energy suppliers may include a standard variable tariff, a renewable energy tariff, an electric vehicle tariff, a fixed price and prepayment energy tariffs on a pay-as-you-go basis⁹. EDF's own range includes other tariffs for heat pumps and electric vehicles². Fixed deals typically run for 12 months and lock in the price of energy for the length of the contract¹⁰.

The distinction that matters most is between fixed and variable. A fixed tariff sets a unit rate and standing charge for its term; a standard variable tariff moves with the price cap and is the default a household lands on when a fixed deal ends. Most fixed tariffs include exit fees for each fuel, payable if a customer switches to a different deal before the end of the contract¹¹.

EDF has also been an active participant in collective switching. The USWCSS-JUL26-01 scheme ran from 13 to 20 July 2026 with winning tariffs from EDF Energy and Fuse Energy, and the USWCSS-JUL26-02 scheme ran from 24 to 29 July 2026 with two winning EDF Energy tariffs. In August 2026, the USWCSS-AUG26-01 scheme ran from 11 to 17 August with EDF Energy's EDF Collective Switch Aug28v3 as the winning tariff. A two-year fixed tariff from EDF carried 100 hours of free electricity when switching via Uswitch¹². Collective schemes of this kind are explained in collective energy switching.

Prepayment customers: the one supplier offering fixed tariffs

Prepayment is where EDF stands out. Most energy suppliers have at least one prepayment tariff, so the payment method itself is widely served¹¹. But on fixed deals for prepayment customers, EDF is the only supplier found offering fixed tariffs for pre-payment customers⁴. That is a meaningful difference for a household on a prepayment meter that wants price certainty rather than a rate that moves with the cap.

Moving between payment methods is possible but conditional. A switch from prepayment to credit requires the energy account to be debt-free, and some suppliers may run a credit check for a direct debit plan¹³. EDF's own position is that there is no credit check, but switching payment method is based on an assessment of each customer's circumstances⁴. The two statements are not contradictory so much as differently scoped: the general market rule allows a credit check, and EDF states it does not run one.

EDF's compliance on restricted meters has been examined by the regulator. Ofgem's decision on supplier compliance with price cap requirements for customers with restricted meters records three overcharged EDF Energy customers¹⁴. That is a small number in the context of 3.7 million buildings, but it is an official finding and belongs in the record. Prepayment debt and switching are covered further in supplier conduct on prepayment and debt and the debt assignment protocol.

Customer service: satisfaction scores and complaints ratings

The official satisfaction data is mixed. In Ofgem's supplier-level findings for July to August 2025, EDF Energy recorded 79% of respondents satisfied or very satisfied overall, with 9% dissatisfied or very dissatisfied, from a sample of 323 respondents³. On customer service specifically, 70% were satisfied or very satisfied, and a significantly lower proportion of EDF Energy, E.ON / E.ON Next, OVO Energy and Scottish Power customers reported they were satisfied with customer service than the average³.

The January 2026 findings show a similar pattern: 75% overall satisfaction, 7% dissatisfied or very dissatisfied, and 72% satisfied or very satisfied with customer service. In that round, a significantly lower proportion of EDF Energy, E.ON / E.ON Next and OVO Energy customers reported they were satisfied with customer service than the average¹⁵. The two rounds disagree slightly on which suppliers fall below average, but EDF appears in both.

Independent review scores tell a different story. EDF holds a 4.5-star rating with an 'Excellent' score from over 14,000 Trustpilot reviews, and a Trustpilot score of 4.6 out of 5². Which? scores EDF 3 out of 12 for contacting your supplier and 7 out of 15 for complaints, but 9 out of 10 for help for customers who need it¹⁶. The gap between official survey data and review-site scores is common: review platforms attract customers with a strong experience at either end, while the regulator's survey samples the customer base. Both are worth reading together, and the wider comparison is in energy supplier customer service ratings.

Contacting EDF: phone, WhatsApp, text and accessibility support

EDF runs several contact routes, and the hours differ by channel. The main telephone number is 03330 069 950⁶. The phone line is staffed Monday to Friday 8am to 6pm and Saturday 8am to 2pm⁵. For customers with hearing difficulties there is a text telephone on 0800 096 2929⁵. WhatsApp is available on 07480 802 942, staffed on weekdays from 7am to 11pm and at weekends from 8am to 8pm⁵. The company also advertises 24/7 support².

For refunds specifically, the number is 0333 200 5100, or 0800 096 2929 for the text telephone, with the same weekday and Saturday hours¹⁷. Refunds are one of the standard complaint categories: Ofgem lists late, incorrect or missing bills, back billing, being overcharged, a faulty meter, poor customer service and refusing to refund credit from an account among the problems a customer contacts a supplier about¹⁸. Where a refund is not resolved, the supplier's complaints process comes first, and the route beyond it is set out in complaining about an energy supplier.

EDF's account features include online billing, direct debit, smart meters, a mobile app, flexible payment options and monthly billing². Contact hours and channels across the market are compared in supplier call waiting times.

Priority Services Register and support for vulnerable customers

The Priority Services Register is a free service provided by water and power suppliers, giving extra help to households that need it¹⁹. Signing up brings priority calls, engineer passwords and help with moving a prepayment meter²⁰. Registration is made directly with each utility supplier, so a household contacts all its utility suppliers directly rather than applying through a single central body²¹. Once registered, the gas network operator and the energy supplier should contact the customer to confirm they have been added to their register²². Where the electricity network is known, a form on the network operator's website is another application route²².

EDF's wider support goes beyond the register. EDF works with various third-party organisations to support customers with managing their money, increasing income through financial benefits and helping with energy debts via a Customer Support Fund²³. That sits alongside the Priority Services Register itself. All of the UK's major energy providers offer some kind of hardship fund, including EDF Energy²⁴. Which? scores EDF 9 out of 10 for help for customers who need it¹⁶.

The register is a system designed and overseen by Ofgem to ensure that individuals with special requirements can access additional support¹. Each energy supplier and network operator maintains its own register, and energy suppliers and distribution network companies are responsible for protecting customers in vulnerable situations³. The register informs energy suppliers and distribution network operators about people who might need additional support, so that tailored support can be provided⁵. The scheme's supplier-by-supplier detail is in the Warm Home Discount and suppliers, and support routes generally in supplier support for vulnerable customers.

Beyond supply: heat pumps, solar, batteries and boiler cover

EDF's non-supply activity is mostly at grid scale rather than in the home. In August 2026 the company signed battery optimisation agreements with Trinasolar ISBU, covering new grid-scale battery storage projects in England and Scotland. In September 2026 it launched Flextras, a loyalty scheme rewarding customers for flexible electricity use. Both point to a supplier positioning itself around flexibility and storage rather than only around meter points.

For households, the relevant routes are tariffs rather than hardware. EDF offers other tariffs for heat pumps and electric vehicles², which is the main way a domestic customer interacts with the company's low-carbon offer. On solar, the Smart Export Guarantee requires licensed suppliers above a size threshold to offer export payments, and EDF appears in the Year 5 export data with Export 12m, Export Exclusive 12m V3, Export Variable Value and Export Variable products⁸. The scheme's rules are set out in the Smart Export Guarantee.

Group buying schemes extend the same logic. Such schemes have covered upgrades from solar panels and battery storage to heat pumps and EV chargers²⁶. That is a route to hardware rather than a supply contract, and it does not change the underlying dependence: a heat pump still runs on electricity from the grid, and a solar array without a battery still exports when it generates and imports when it does not. The household-level picture is in energy suppliers and household energy independence.

Switching, renewal and exit fees: what happens when your tariff ends

A fixed tariff ends on a set date, typically 12 months after it starts¹⁰. If no new deal is chosen, the account moves to the standard variable tariff, which is not fixed and follows the price cap. That is the default outcome of doing nothing, and it is the reason renewal decisions matter more than the initial switch.

Exit fees apply to leaving a fixed tariff early. A customer may have to pay the previous supplier an exit fee if they were on a fixed rate tariff and chose to leave before it ended²⁷. Most fixed tariffs include exit fees for each fuel, payable on switching before the end of the contract¹¹. The waiver is time-limited: the fee does not apply once the customer has entered the final 49 days of the tariff¹⁰. That window is the point at which a switch can be arranged without penalty, and it is worth diarising rather than relying on a reminder.

Switching itself is a regulated process. Ofgem sets out the steps for changing home energy supplier, and the practical sequence is covered in how to switch energy supplier and exit fees when switching. EDF has also run referral promotions: from 14 September 2026, successful referrals earned £100 for the referrer and £75 for the friend, with the offer running to 6 October 2026. Referral and loyalty schemes across the market are compared in energy supplier rewards and referral schemes.