EDF Energy

EDF Energy is a wholly owned subsidiary of the French state-owned EDF Group (Electricité de France), one of Europe’s largest energy companies. 

It says it is 'a sustainable and responsible energy business'.

It is Britain's biggest producer of zero carbon energy. Around 55% of the electricity it supplies comes from nuclear power, and a further 18.2% from wind and solar.

EDF Energy took on customers of Green Network Energy, Zog, iSupply Energy and Utility Point when these smaller firms stopped trading. 

Compare energy prices using our free tool.

EDF score

We combine the results of our customer survey with an in-depth assessment of companies' behind-the-scenes practices and policies to give you an overall view.

Take a look at our table below to see our score breakdown for EDF:

Here's how EDF's customer and policy assessments break down:

Find out how EDF compares with other energy companies – click to see our full results of the best and worst energy companies.

Which? verdict on EDF

• Pros: One of the best for supporting vulnerable customers
• Cons: Customers don’t consider it good value; the worst for customer contact

EDF customer review

EDF Energy is ranked joint 14th out of 17 energy companies rated by 11,945 members of the public in the annual Which? customer survey. Its score of 65% puts it only a handful of percentage points above the bottom-placed companies (Scottish Power and Ovo Energy, which scored 62% and 61%, respectively).

Its customers rated it a poor two stars across all measures. One customer said: 'I feel we don’t get value for money, but don’t know if other suppliers are better.'

Another customer said about getting in touch with EDF: 'It's trying to get hold of someone that is difficult. Once you do, it's fine.'

EDF customer service  

Customers felt fairly negative about EDF's customer service; it received a two-star rating for overall customer service. 

EDF was the worst scorer in our supplier assessment of its customer service when you contact it, with three points out of 12. This was partly down to having less extensive opening/monitoring hours for its channels than other suppliers. It doesn't offer any non-emergency support (phone and email) at the weekend. 

EDF common complaints

In our customer survey, 6% of respondents who said they had contacted EDF in the past year did so to make a complaint. 

The most common problem experienced by all EDF customers was their direct debit payments being set too high or low, with 8% experiencing this in the past 12 months.

Our EDF supplier assessment

In September-November 2025 we looked at five aspects of suppliers' business practices and procedures. Examples of some criteria within each category include:

• Complaints – how many complaints suppliers get and how quickly they resolve them
  
• Contacting your supplier – including how and when you can get in touch, call waiting times, and the quality of self-service help online
• Help for customers who need it – including those in vulnerable situations, those who use prepayment meters, those who need materials in languages besides English, and web accessibility 
• Smart meters – including performance against 2024 smart meter targets and the proportion of customers' smart meters actually operating in smart mode
• Switching – how well suppliers handle switching.

We did this using a combination of the responses to a survey we sent to suppliers and our own assessments.

EDF performed well below average in our supplier assessment, coming joint 15th, with a score of 50%. It was, however, one of the top-rated suppliers for its support of vulnerable customers, with 9 points out of 10, alongside Ecotricity, E.ON Next and Ovo Energy. However, Octopus Energy, Co-op Energy, Utilita, Sainsbury's Energy and Utility Warehouse performed even better, with 10 out of 10.

EDF didn't do well on complaints performance – it scored just seven points out of a possible 15. 

Can you join EDF with a prepayment meter?

Yes, EDF Energy accepts customers with both standard and smart pay-as-you-go meters.

• You can top-up standard prepayment meters at post offices, and PayPoint and Payzone outlets. 
• If you're a smart meter customer, you can top up remotely online or via EDF's app, as well as see how much you're spending and get alerts when credit is running low.
• All prepayment customers can get £10 of emergency credit when their electricity balance falls to 50p or less or their gas meter drops to £0. It will then be taken off your credit the next time you top up.

Not sure if you should prepay? Find out: is prepayment energy right for you.

How sustainable is EDF Energy?

Sustainability credentials are important when choosing an energy supplier for two thirds of those responsible for choosing their provider. That’s according to our online survey of 3,000 UK adults in August 2024.

So we factor in a range of sustainability criteria in our Which? Eco Provider assessment. We are next running this research in 2026.

Here’s how EDF Energy fared:

• Proportion of renewable electricity sold to customers: 20.1%
• Generates renewable electricity using onshore and offshore wind. 
• Buys fossil fuel power from a combined gas cycle turbine and gas-fuelled plants which provides power on-demand to maintain grid stability.
• Offers time-of-use tariffs including discounted overnight EV rates, and tariffs with cheaper hours designed for heat pumps.
• Offers installation of solar PV, battery storage, heat pumps, insulation and EV chargers.

Find out more about the differences between energy companies renewable electricity, and find out how we assessed energy suppliers for sustainability.

Based on information supplied by companies in August 2024 and their most recent published fuel mixes, where available.

Making your home more energy efficient will save money on your bills in the long term and lower your carbon footprint. Get started with our guides to home energy efficiency.