E.ON SEG Tariff: 6p, 13p or 17.5p? Know Which You’ll Get
E.ON’s export tariff is really three tariffs — and they rank very differently. A market-leading open rate, a beatable middle, and a 17.5p headline with a catch no other supplier has.
The short answer
“The E.ON SEG tariff” is really three tariffs, and which one you’d get changes the verdict completely. Next Flex Export (6p/kWh) is open to everyone — no supplier switch, no E.ON products — and is the joint-best no-strings rate in Britain. Next Export Exclusive (~13p) needs E.ON as your import supplier and is the weak middle: EDF, British Gas and Good Energy all pay ~15p for the same commitment. Next Export Premium v3 (17.5p) is for E.ON-installed systems only — competitive, but not the top install rate (Good Energy pays 25p).
Two catches you won’t find in E.ON’s marketing: the Premium rate has a no-renewal clause unique among major suppliers — year two drops to a lower rate regardless — and payments arrive annually by default unless you actively request quarterly. Our score: 3.5/5 — excellent at the open end, beatable in the middle, fine print at the top. Full tier-by-tier earnings below.
What this review covers
Export tariffs are where solar owners quietly leave money on the table — the spread between the worst and best SEG rates is several hundred pounds a year, and suppliers count on nobody checking. E.ON’s range is a perfect case study, because depending on your situation it’s simultaneously one of the best deals in Britain and one of the most beatable. Here’s the honest map of which is which.
The three tiers — and who qualifies for what
| Tariff | Rate | Requires | Honest ranking |
|---|---|---|---|
| Next Flex Export | 6p/kWh (variable) | Nothing — any supplier, any installer | Joint-best open rate in the UK |
| Customer fixed tier | ~8.5p (12m fixed) | E.ON Next customer | Decent, predictable |
| Next Export Exclusive | ~13p (fixed) | E.ON Next import supply | Beaten by EDF / BG / Good Energy (~15p) |
| Next Export Premium v3 | 17.5p (12m fixed) | E.ON-installed system + E.ON import | Competitive — but one term only |
The standout is genuinely the humblest number: 6p with no strings attached. E.ON doubled it from 3p in late 2025, making Flex Export (level with Scottish Power) the best rate you can take without switching anything — a fact that matters to the many households who like their current import deal. At the other end, 17.5p is only unlocked when E.ON installs your system, which turns the tariff into part of a package deal — and packages should be judged whole, which is where choosing your installer on merit rather than tariff bait matters. The standard plumbing applies throughout: MCS certificate, a smart meter reading half-hourly export, and your connection paperwork.
What each tier actually pays: a 4kW worked example
Take the typical UK setup — a 4kW system generating ~3,800–4,000kWh a year, self-consuming about half and exporting 1,900–2,400kWh (no battery). The annual export income by tier: 17.5p Premium: £333–£420 · 13p Exclusive: £247–£312 · ~8.5p customer tier: £162–£204 · 6p Flex: £114–£144 · and for anyone still on a legacy 3p rate: £57–£72 — the single easiest pay rise in solar is escaping that tier, even just to E.ON’s own 6p. Add a battery and the export cheque shrinks (you’re keeping more of your power) while total savings grow — and the divert-or-export question gets its own treatment in our immersion diverter guide, where these same rates decide whether free hot water is actually free.
The catches — the part E.ON’s pages soft-pedal
The no-renewal clause: unique in the market
Here’s the detail that earns this review its keep. Next Export Premium is a one-term tariff: when your 12-month fix at 17.5p ends, you cannot renew at that rate — you drop to a lower tier regardless of loyalty. No other major supplier currently applies a one-term-only restriction to its top export tariff. That doesn’t make 17.5p bad — it makes it a year-one rate, and your payback maths should treat it as one. The second catch is smaller but bites more often: payments default to annually. If you want quarterly income you must actively request it — a setting many customers discover only when month twelve arrives and nothing has. Add the standard tie (move your import away, lose the export tariff) and a processing queue with no committed timeframe, and the honest advice is simply: sign up with eyes open, set the payment frequency on day one, and diarise the term end.
How E.ON compares to the August 2026 market
Context makes the tiers make sense. Among install-locked rates, E.ON’s 17.5p sits mid-table: Good Energy pays 25p, So Energy and OVO 20p, EDF 18p — all on their own installs, mostly for 12 months. Among import-bundled rates, E.ON’s ~13p trails the ~15p cluster (EDF, British Gas, Good Energy). Among open-access rates, E.ON’s 6p is joint-best of the true no-strings tier, with Ecotricity’s open-market variable (~16p) the aggressive outlier worth watching. And post the March cut, the famous Octopus Outgoing sits at 12p — though Octopus’s real strength is now its time-of-use ecosystem, where battery households on smart tariffs out-earn any flat rate. One caution that applies to this whole paragraph: every one of these rates can change with ~30 days’ notice — treat all league tables, including ours, as a snapshot to verify on the day you sign.
Switch to it — or from it? The decision by situation
On E.ON’s legacy 3p rate: move today — doubling to Flex’s 6p takes one form. Happy with your current import supplier: E.ON Flex (6p) is a top-two home for your export; check Ecotricity’s open rate before deciding. Willing to switch import for a better rate: the ~15p trio (EDF, British Gas, Good Energy) beats E.ON’s 13p at the same price of admission. Being quoted an E.ON install: the 17.5p sweetener is real but one-year — compare the whole package against rivals (a Good Energy 25p deal on a dearer install can still lose), plan for the year-two drop, and request quarterly payments at signup. And whichever door you take: SEG tariffs are a yearly decision, not a lifetime one — batteries, rate cuts and new entrants keep reshuffling this table.
Our score: 3.5 / 5
E.ON Next export tariffs — brilliant floor, beatable middle, fine-print top
The bottom line: Judge E.ON’s export range by tier, not headline. The 6p open rate is genuinely market-leading for anyone staying put; the 13p middle is beaten by three rivals at the same commitment; and the 17.5p install rate is a good year-one number wrapped in a no-renewal clause nobody else imposes — with payments annual unless you ask. Know your tier, set quarterly payments, diarise the term end.
Get my free quotes →E.ON SEG tariffs: pros & cons
✓ Pros
- 6p Flex — joint-best no-strings rate in Britain
- No supplier switch needed for the open tier
- 17.5p is a solid year-one rate on E.ON installs
- Clear tier structure once you know it exists
- Doubled its open rate (3p→6p) unprompted in 2025
- Standard SEG protections: no exit fees, tax-free income
✗ Cons
- No-renewal clause on Premium — unique in the market
- Payments annual by default; quarterly must be requested
- 13p middle tier beaten by EDF, BG & Good Energy
- 17.5p trails rival install rates (up to 25p)
- Tied: leave E.ON import, lose the export tariff
- Legacy 3p rate still quietly holding old customers
Frequently asked questions
What is the E.ON SEG tariff rate?
Three tiers in 2026: 6p/kWh (Flex, open to all — no E.ON products needed), ~8.5p fixed for E.ON customers, ~13p (Exclusive, E.ON import required) and 17.5p (Premium, E.ON-installed systems only). Rates change with ~30 days’ notice — confirm the live figure before signing.
Is it any good?
By tier: the 6p open rate is joint-best in Britain — genuinely good. The 13p middle is beaten by EDF, British Gas and Good Energy (~15p) at the same commitment. The 17.5p install rate is competitive but not top (Good Energy 25p) and lasts one term only. Overall: 3.5/5.
How much would I earn?
A 4kW system exporting 1,900–2,400kWh/yr: £333–£420 at 17.5p, £247–£312 at 13p, £162–£204 at ~8.5p, £114–£144 at 6p — and just £57–£72 on the legacy 3p rate, which is the strongest argument for checking your current tier today.
What’s the catch with the 17.5p rate?
Two: a no-renewal clause (one 12-month term at 17.5p, then a lower rate regardless — no other major supplier does this) and annual-by-default payments you must actively switch to quarterly. Plus the standard tie: leave E.ON for import and the export tariff goes too.
Do I need to be an E.ON customer?
Not for the 6p Flex tier — any supplier, any installer, up to 15kWp, with an MCS certificate and a smart meter doing half-hourly export reads. The 8.5p/13p tiers need E.ON import; 17.5p additionally needs an E.ON install.
Should I switch to or from it?
Legacy 3p: switch now. Keeping your import supplier: E.ON’s 6p is a top-two pick (check Ecotricity’s open rate too). Willing to switch import: the ~15p trio beats E.ON’s 13p. Quoted an E.ON install: judge the whole package, plan for the year-two drop, request quarterly payments on day one.
The verdict
E.ON’s export range rewards exactly one thing: knowing which tier you’re actually in. For the household that won’t switch suppliers, the 6p Flex rate is quietly one of the best deals in British solar — free money on power you were giving away. For the switcher, the 13p middle is the tier to skip past, with three rivals paying more for the same commitment. And for anyone weighing an E.ON install, the 17.5p headline is real but deliberately temporary — a year-one rate with a market-unique no-renewal clause, best judged as part of the whole package price, not a reason on its own.
The wider lesson is the one we’d give about any supplier: export tariffs are a moving market, and loyalty is expensive. Check your rate yearly, escape any legacy 3p tier today, set quarterly payments at signup, and if you’re still choosing your system, compare install-plus-tariff packages side by side — a couple of free, no-obligation quotes from MCS-certified installers is the fastest way to see which combination genuinely pays most for your roof.
Important
Going Solar UK is an introduction service, not an installer, energy supplier or financial adviser. This review reflects publicly listed rates and terms as of August 2026: SEG tariff rates, tiers, eligibility and conditions change frequently (typically with around 30 days’ notice), so always confirm current rates and terms directly with E.ON Next or any supplier before applying or switching. Earnings figures are illustrative estimates, not guarantees, and depend on your generation, usage and live rates. Scores are our honest editorial opinion.
We may receive a commission when we introduce you to an installer, at no cost to you. Any contract for work is directly between you and the installer.