TL;DR
- EDF Tracker is a cap-linked variable tariff. Unit rates move every quarter, broadly in step with the Ofgem default tariff cap, with a small discount applied.
- This is structurally different from Octopus Tracker, which sets a fresh price every day from the wholesale market. EDF Tracker is the calmer, slower-moving cousin.
- The headline discount against the cap has averaged 2 to 4% over the last four quarters, based on EDF rate sheets published with each Ofgem cap announcement.
- Smart meter not strictly required, although EDF prefers to install one shortly after sign-up. The discount is the same with or without.
- Best fit for households who want a small structural saving without daily variability and without committing to a fix.
Last reviewed: May 2026
EDF Tracker is one of the cleaner cap-following products on the market. The unit rate adjusts every three months to within a percent or two of the new Ofgem default tariff cap, plus EDF's discount margin. There is no wholesale exposure, no daily price publication, no half-hour band, and no need for a smart meter to extract the small saving. For a household that wants the cap minus a few percent and nothing more complicated, it does the job.
It is also the wrong product for anyone who hoped a tariff called "Tracker" would mean wholesale tracking.
How the rate is set
The Ofgem cap is recalculated four times a year by Ofgem, announced in November, February, May, and August. The cap takes effect on 1 January, 1 April, 1 July, and 1 October respectively. EDF Tracker rates change on the same quarterly cadence. EDF publishes its new rates within a few working days of each Ofgem announcement.
The mechanics are straightforward. EDF takes the cap's unit rate and standing charge as a baseline, then applies its discount margin, then offers the resulting product to new and existing Tracker customers. The discount margin is communicated alongside the rate publication and held constant through the quarter unless wholesale movement materially changes the supplier's underlying position.
The discount has historically sat between 2% and 4% off the cap unit rate. The Q1 2026 announcement (EDF rate sheet dated 24 November 2025, following the Ofgem cap announcement of 22 November 2025) set the discount at 3% on electricity unit, 2.5% on gas unit, and 0 on standing charge. The standing charge discount is a missing piece; competitors that discount standing charge can be cheaper for low-consumption households even at higher unit rates.
What the actual rates look like
For a customer in the West Midlands DNO region on EDF Tracker in Q1 2026, the unit rate landed at approximately 26.15p per kWh on electricity (3% below the cap unit rate of 26.96p) and 6.83p per kWh on gas (2.5% below the cap rate of 7.01p). The standing charge sat at the regional cap level: roughly 60.97p per day on electricity and 32.67p on gas, unchanged from the cap.
Below is a snapshot of the regional Q1 2026 Tracker rates, drawn from the EDF customer-facing tariff page on 1 January 2026.
| Region | Elec unit (p/kWh) | Elec standing (p/day) | Gas unit (p/kWh) | Gas standing (p/day) |
|---|---|---|---|---|
| West Midlands | 26.15 | 60.97 | 6.83 | 32.67 |
| London | 25.78 | 40.55 | 6.83 | 32.67 |
| Eastern | 26.30 | 53.80 | 6.83 | 32.67 |
| South Wales | 26.52 | 61.92 | 6.83 | 32.67 |
| North Scotland | 26.96 | 67.20 | 6.83 | 32.67 |
Gas unit and standing charge do not vary by DNO region for most suppliers because gas distribution charges are spread differently. Electricity rates vary by region because the network charges that make up around 20% of the unit rate change with the local distribution licence.
How EDF Tracker compares to other options
The interesting comparison is not between Tracker and the cap; that is by definition a small fixed gap. The interesting comparison is between Tracker, a fixed product, and a true wholesale tracker.
Against an EDF Fixed product (12 or 24 months), Tracker is cheaper in falling markets and more expensive in rising markets. The fix locks in today's rates for the contract term. If wholesale falls during the term, the fix becomes the more expensive option; if wholesale rises, the fix protects against the increase. The cap moves with wholesale on a one-quarter lag.
Against Octopus Tracker, EDF Tracker has lower volatility and a smaller average saving. The Octopus product has produced a structural saving averaging roughly 10% against the cap over 2024-25 according to Octopus customer portal historical data, against the 2-4% EDF Tracker discount. The trade-off is that Octopus customers absorbed wider daily variation, including some uncomfortable winter spikes.
The catch on EDF Tracker: the standing charge is not discounted. A low-consumption household, particularly a single-person flat, pays the same daily access cost as on the cap. The unit-rate-only discount is worth more to higher-consumption households.
Sign-up, exit, and the contract small print
Sign-up is a few minutes through the EDF online quote tool. There is no requirement for a smart meter, although EDF will offer to install one within the standard 8-12 week lead time after the contract starts. The supplier publishes its smart meter installation rates and SLA timelines on the customer help portal.
Exit is free at any time. There is no minimum term. Customers can switch to a fixed product, another supplier, or back to the standard variable without penalty. The switching rules under the Ofgem May 2022 update apply: five working days for the switch to complete.
The small print to watch: the discount margin is contractually adjustable. EDF reserves the right to change the discount with 30 days' notice. In practice the margin has been steady through 2025-26, but a household relying on a specific saving should not treat the 3% figure as guaranteed indefinitely.
Who actually benefits from EDF Tracker
Three customer profiles tend to gain the most. High-consumption households (above 4,000 kWh electricity or 16,000 kWh gas annually) get more value from a unit-rate discount because their consumption mass is larger. Customers nervous about wholesale exposure but unwilling to commit to a fix gain stability without locking in. Renters and short-term residents avoid exit fees that some fixed products carry, while still getting a small discount.
It works less well for low-consumption single-occupancy flats. The lack of a standing charge discount means the structural saving is concentrated on a small consumption base. For these customers the cap itself is often a similar net outcome.
The customer profile that is wrong for EDF Tracker is the wholesale-curious household that wanted price-signal exposure. The product does not deliver that. Anyone after wholesale exposure should look at Octopus Tracker or, with more variability, Octopus Agile.
What happens at cap announcement time
Four times a year, the Tracker rate moves. Customers get an email notice from EDF in the week between the Ofgem cap announcement and the rate change taking effect. The notice details the new rates, the implied annual cost on average consumption, and the discount margin applied.
This is the moment many Tracker customers reconsider. If the cap is moving up sharply, switching to a fixed product can lock in pre-rise rates. If the cap is moving down, staying on Tracker captures the fall. Customers who do nothing remain on Tracker.
In practice EDF does not actively push customers off Tracker at the rate change. The contract continues automatically. The reminder email is informational rather than a sales push, although fixed products are usually visible on the dashboard during the notice window.
Where it breaks: customers who change address mid-contract sometimes find their new property defaults to the standard variable rather than Tracker. The fix is to call EDF and request a reinstatement on the new address. This is a known process glitch flagged on Citizens Advice's 2025 supplier issues review.
EDF Tracker against Octopus Tracker: the actual head-to-head
Both products are called Tracker. Both are variable. They are not the same product. EDF Tracker follows the Ofgem default tariff cap on a quarterly cadence with a 2-4% discount margin. Octopus Tracker sets a fresh price every day from the wholesale market, with a contractual daily ceiling.
For 2025 the realised performance was: Octopus Tracker delivered an average 10% saving against the cap, EDF Tracker delivered an average 3% saving. Octopus customers absorbed wider daily variability including a few uncomfortable winter spikes. EDF customers had a smoother experience with smaller savings.
The risk-adjusted comparison favours EDF Tracker for customers who value predictability and Octopus Tracker for customers willing to accept variability for higher expected saving. Both products are no-exit-fee variables; switching between them is straightforward.
For a typical medium-consumption household in 2025, the choice between the two was worth roughly £150 a year in expected value, but with higher variance on Octopus. A risk-averse customer might rationally choose the smaller, smoother saving. A risk-tolerant customer optimising on expected return would have chosen Octopus.
One question to ask before signing up
Customers thinking about EDF Tracker should ask one question of themselves before committing. Does the household value the small structural saving against the cap more than the option to switch to a fix when wholesale prices look likely to rise? Tracker rewards customers who want to stay in a cap-linked product without committing to a term. Customers who think they will move to a fix within the next 6 months should not bother with Tracker; the admin overhead of two switches is not worth the small interim saving.
Practical answer: for households likely to stay on a variable product through 2026, Tracker is a small but real win. For households likely to fix in the near term, the standard variable is cleaner. The difference in total annual cost between Tracker and the cap is around £40-£80 on a medium household. Switching costs none of that but takes effort.
Editorial disclaimer. Kaeltripton is an independent UK finance publisher. This article is general information for UK adults making their own decisions, not regulated financial advice. EDF Tracker discount margins and Ofgem cap levels change quarterly. Figures reflect EDF and Ofgem publications dated before the last-reviewed date at the top of this page. For complaints, refunds, or vulnerable-customer protection the formal route runs through the supplier first and then the Energy Ombudsman.
FAQ
How often does the EDF Tracker rate change between Ofgem cap cycles?
Every quarter, aligned with the Ofgem default tariff cap cycle. New rates are announced after each Ofgem cap publication and take effect on 1 January, 1 April, 1 July, and 1 October.
Is the discount applied to gas as well as electricity?
Yes. EDF publishes separate discount margins for each fuel. The percentages can differ; gas discounts have typically been slightly lower than electricity.
Is moving to a fix later possible from Tracker?
Yes. There is no exit fee on Tracker and the customer can move to any available EDF fixed product. The new fixed rates apply from the switch date.
Will EDF arrange a smart meter install automatically?
EDF offers a smart meter install within 8-12 weeks of contract start. The install is free, in line with the DESNZ Smart Meter Implementation Programme. Customers can decline.
Does the discount apply to the standing charge?
No, in the Q1 2026 version of the product. Only the unit rate is discounted. Customers should weigh this against alternative products that discount both.
Is the historical EDF Tracker discount margin published?
EDF publishes the current quarter's discount but does not maintain a public history of past discounts. Customers can request historical figures from EDF support if needed.