Is EDF Flextras worth joining? A member from launch week

Affiliate disclosure: this post contains an EDF referral link. During the boost window described below EDF pays me £100 and you £75, the first time on this site a scheme has paid both halves in cash and paid me the larger one. I have said so in the section that covers it rather than in a footnote, and the boost is not why EDF is on this site: the tariff arithmetic that put it here is on the EDF referral page and predates Flextras by five weeks.

EDF launched Flextras, its first loyalty scheme, on 7 September 2026. I joined on the 10th and activated the free tastecard the same day, on the electricity supply I moved to EDF in July 2026.

The timing is the useful part. I am the person who lost Octoplus. My electricity was with Octopus until July, Octoplus needs an Octopus electricity supply on a half-hourly smart meter, and the day my electricity left, the rewards left with it. Seven weeks later my new supplier launched its own version. This post is what the replacement actually contains, priced against my own usage rather than against the headline.

The verdict, once: join Flextras, because it costs nothing and the tastecard is worth about £48. Ignore the free electricity, which is worth about £19 a year at my usage in the best case and needs a real behaviour change to earn at all. The reason to join this month is the thing membership gates: a referral boost running to 6 October that pays more than three years of the free electricity in one switch.

What Flextras is, and what it asks of you

Free, and app-only. EDF's terms ask that you are 18 or over, live in England, Scotland or Wales, are a current domestic gas or electricity customer, have an email address registered to your EDF account, and have downloaded the EDF app. Business customers are out.

Joining took me about a minute inside the app: accept the terms and it is done. There is no web route, which matters more than it sounds, because it means every benefit below is redeemed on a phone.

What arrives with membership:

• A 12-month tastecard, applied on sign-up
• Four free electricity hours as a welcome gift, which expire 12 months after they land
• Access to Weekend Saver, which is a separate opt-in, or Power Perks if you are on a smart time-of-use tariff
• The refer-a-friend scheme, which EDF has folded into Flextras

The four welcome hours arrived on my account but are not usable until 1 October, and Weekend Saver, which I opted into separately, starts for me on 5 October. So the free-electricity half of this review is arithmetic on published rates rather than a measured saving. I have said which is which throughout, and I will come back with the measured figure once I have burned the four hours.

The tastecard is the benefit that survives contact with the small print

Two things usually make a "free 12-month membership" worthless: it takes your card details, and it auto-renews into a paid subscription you forget about. Neither is true here. EDF's tastecard signup asked for my name and my email address, took no payment method, and does not auto-renew at the end of the 12 months. It is the same tastecard product a paying member gets, not a cut-down version.

What that is worth depends on which price you compare it to. tastecard's own cheapest advertised membership is £3.99 a month, so 12 months of it is £47.88. That is the honest number for a benefit EDF attaches no value to at all.

tastecard's own pitch is a lot bigger, and it is worth reading the way you would read any savings claim. The site advertises "over £600 a year", built from five figures: £222 at restaurants, £246 on coffee, £64 on days out, £62 on pizza delivery and £54 at the cinema. Those are the savings, not the spending. At the rates published beside them, 25% off restaurants, coffee and cinema and 50% off pizza delivery, realising £584 of that £600 means spending roughly £2,200 a year in four categories. Most households do not, which is why a £47.88 membership is the number I would plan around and £600 is the number I would ignore.

The offer itself is 2 for 1 or 25% off at "thousands of restaurants", 25% off at 350 or more cinemas, 25% off barista-made drinks, and 2 for 1 or 50% off delivery at Domino's, Papa Johns and Pizza Hut. I have activated mine and not yet used it, so I cannot tell you how the bookings behave in my area. What I can tell you is that nothing is riding on it: there is no card on file to cancel.

What a free electricity hour is actually worth

This is where the headline and the arithmetic separate, and it is why the rating drops to 4.3 the day the referral boost closes.

My electricity is 2,095 kWh a year in Region H (Southern) at 26.42p per kWh, the Ofgem cap rate my Simply Tracker tariff is priced in line with. Spread evenly, that is 0.239 kWh an hour, so an average hour of my electricity costs 6.3p.

Run that through what Flextras gives you:

And £18.96 is a ceiling, not an estimate, for two reasons. It assumes you qualify every single month. It also assumes your free hours are average hours, and they cannot be: Weekend Saver hours are redeemed in slots between 12am and 3pm at weekends, which for most homes is the cheapest stretch of the week. The scheme pays you in the hours you use least.

There is a way to beat that figure, and it is the only reason to take the free hours seriously. The value of a free hour is not what you would have used anyway, it is what you deliberately move into it. Put a wash, a dry and a dishwasher cycle inside a free Saturday morning hour and it is worth several times an average hour. That works. It is also a chore rota, not a reward, and it is worth saying plainly that the ceiling on the whole exercise is still under £20 a year at my usage.

Weekend Saver's qualifying bar is set below flat consumption

The 25 hours are conditional, and the condition is the most interesting number EDF has published. From EDF's own page: "Get 25 hours of free electricity a month when you use less than 9% of your weekday electricity between 4 to 7pm."

Check that against a clock. The 4 to 7pm window is three hours out of every 24, and across Monday to Friday that is 15 hours out of 120. A household that used electricity perfectly evenly, hour by hour, would put 12.5% of its weekday usage in that window and would fail the test. To pass you have to sit more than a quarter below flat, in the three hours of the day when most homes are cooking, drying and putting the lights on.

That is not a trick, and EDF is not hiding it: the whole point of the scheme is to shift demand off the national evening peak, which is exactly what Octopus Saving Sessions target too. But it does mean the honest description of Weekend Saver is a demand-shifting programme with a reward attached, not a loyalty perk you receive for being a customer. If your evenings are already quiet, you qualify without noticing. If they are not, £18.96 a year is the prize for rearranging them.

Weekend Saver also needs a compatible smart meter sending half-hourly readings, an eligible tariff (time-of-use tariffs are excluded, which is what Power Perks exists for instead), and the app. My meter came across from Octopus in the July switch with nothing to fix, and it reads half-hourly, so I cleared those without doing anything.

The referral boost is the money, and it is gated behind membership

Between 14 September and 6 October 2026, EDF is paying £100 to the referrer and £75 to the friend, against a standard scheme that pays £50 to each side. It is open to Flextras members only, which is the real answer to why anyone should join this month, and the friend has to start their switch inside the window for the boost to apply.

Two things about that offer are worth being careful with. The first is sourcing: as of 10 September 2026, EDF's public refer-a-friend page (opens in new tab) still advertises £50 to each side and says nothing about a boost. My figures come from the email EDF sent me on 10 September and from EDF's own announcement on X (opens in new tab). Check the live page before you rely on the number.

The second is that the boost is not symmetrical, and I am on the better side of it. £100 to me and £75 to you is the first offer on this site where both halves pay cash and the referrer's is the larger. Incard pays me a bigger number, £250, but pays you in boosted cashback rather than money, so nothing there was comparable side by side. That does not change what I think of EDF's tariff, which I wrote up in August and which is unflattering in places: Simply Tracker costs me £70.13 a year more than the Octopus fix it replaced. It does mean you should weigh this page knowing the asymmetry exists.

Set against everything above, the scale is what stands out. £75 is roughly four years of Weekend Saver at my usage, in a single switch. The free electricity is the part of Flextras that gets the marketing; the referral is the part with the money in it.

Flextras against the Octoplus it replaced for me

I have run both, seven weeks apart, on the same house and the same meter. What I can compare honestly is what each one asks of you, because the pounds do not compare cleanly: my Octoplus earnings were small and I never recorded them properly, so any figure I gave you would be a guess dressed as a measurement.

The structural difference that matters: Octoplus paid in several small streams, one of which (the daily Octopoints spin) required nothing of you, and Flextras pays in one large conditional stream plus one unconditional non-energy perk. If you want a loyalty scheme that pays you for existing, the tastecard is Flextras's only such benefit and it lands once. Everything else is earned.

Should you join?

Yes, if you are already an EDF customer, because it is free, the tastecard is worth £47.88 against nothing, and membership is what makes the boosted referral available to you. That is the whole case and it is a good one.

No, if you are choosing a supplier and Flextras is on the scales. At my usage the free electricity tops out under £20 a year, and a £20 difference in unit rates or standing charge will swamp it. Pick the tariff on the tariff. The EDF referral page has the arithmetic that decides that, including the case against Simply Tracker, and the energy refer-a-friend league table has what every other UK supplier pays.

I will update this post with a measured figure once the four welcome hours are spent after 1 October, and again once Weekend Saver has run a full month from 5 October. Both are arithmetic today, and both should be measurements.

Frequently asked questions

How much is a Flextras free electricity hour actually worth?

At my usage, 6.3p. My electricity is 2,095 kWh a year at 26.42p per kWh, which is 0.239 kWh in an average hour. Weekend Saver's maximum of 25 hours a month is therefore £1.58 a month, or £18.96 a year, and that figure is a ceiling: it assumes you qualify every month, and it assumes an average hour, when the redeemable slots run between 12am and 3pm at weekends. Run the same sum on your own annual kWh: divide by 8,760, multiply by your unit rate. The hours are worth more than that only if you deliberately move a wash or a dishwasher cycle into them.

Does the free EDF tastecard need card details or auto-renew?

No to both. Signing up asked for my name and my email address only, took no payment method, and the 12 months do not roll into a paid subscription. That is unusual enough to be the main reason the tastecard is the strongest thing in Flextras: there is nothing to cancel and nothing to forget. It is the full tastecard product rather than a cut-down version, and tastecard's own cheapest advertised membership is £3.99 a month, so 12 months is £47.88.

Is EDF Flextras better than Octopus Octoplus?

They are built differently, and I have run both on the same house seven weeks apart. Flextras gives one unconditional non-energy benefit, the tastecard, plus a large conditional stream of free electricity you have to earn by shifting demand off the 4 to 7pm weekday peak. Octoplus paid in several smaller streams, one of which asked nothing of you at all. I cannot give you a fair pounds comparison because I never recorded my Octoplus earnings properly, and a number I reconstructed now would be a guess. What is comparable is the entry bar: Octoplus needed Octopus electricity on a half-hourly smart meter paid by direct debit, and Flextras needs EDF gas or electricity plus the app.

Can I get Flextras without a smart meter?

Yes for the membership, the tastecard and the four welcome hours. No for Weekend Saver, which needs a compatible smart meter sending half-hourly readings and a tariff that is not time-of-use. Mine came across from Octopus in the July 2026 switch with nothing to fix and reads half-hourly, so I cleared that without doing anything.