Best UK home solar panel and battery tariffs — July 2026 import & export
The Ofgem price cap rose to £1,862/yr on 1 July 2026 (+£221, +13.5%). A home battery on a smart import tariff, paired with a strong Smart Export Guarantee (SEG) rate, is the most effective way to turn that rise into a saving rather than a cost. This is the definitive UK guide to the best solar + battery import and export combinations — verified July 2026, with no invented rates.
- Eight SEG export tariffs ranked, from 4.1p to 32.17p/kWh
- How a battery plus a smart tariff beats the £1,862 cap
- Pairing rules — which import tariff unlocks each premium export rate
- Worked earnings for a typical 6 kWp PV + 10 kWh battery home
Quick answer: the best solar + battery tariff setup right now
For most UK homes with solar panels and a battery, the strongest July 2026 combination is a cheap smart import tariff (Octopus Cosy at 13p in three off-peak windows, or Intelligent Octopus Go at 7p overnight) paired with a premium SEG export tariff (Intelligent Octopus Flux up to 32.17p/kWh at peak, Good Energy Solar Savings Exclusive 25p flat, or EDF Export Exclusive 24p flat).
A battery lets you buy grid electricity cheaply off-peak, store your own solar, and export at the most valuable times — so while the price cap rose to £1,862/yr, a battery owner on a smart tariff can cut import costs and earn £550–£900/yr in export income, beating the cap rather than absorbing it. The catch: premium export rates usually require you to take the same supplier’s electricity, and every SEG tariff needs an MCS-certified install.
Both halves of the equation matter — import and export
Solar + battery economics in July 2026 rest on two tariff legs. Your import tariff sets the price you pay for grid electricity that tops up the battery overnight or backfills cloudy days. Your export SEG tariff sets what the supplier pays for surplus generation sent back to the grid. The best total outcome combines a cheap off-peak import (Octopus Cosy 13p three-window, or Intelligent Octopus Go 7p) with a premium export rate (Intelligent Octopus Flux up to 32.17p peak, Good Energy 25p flat, EDF 24p).
EnergyPlus checks both legs against your install spec and postcode. The pairing rules below explain why you usually need to be on a supplier’s electricity tariff to access their best SEG rate — something many homeowners discover only after installing.
Find the best solar + battery tariff pairing
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How a battery plus a smart tariff beats the £1,862 cap
Since 1 July 2026 the Ofgem cap is £1,862/yr for a typical dual-fuel direct-debit home — up +£221 (+13.5%) on the £1,641 cap that ran April–June. Gas unit rates climb about 24%, electricity about 5%. Only Standard Variable (price-capped) tariffs move; the roughly 40% of homes on fixed deals are protected until those deals end. A solar + battery home does not just shelter from the rise — with the right tariff pairing it can profit from it.
1. Buy electricity cheaply
A smart import tariff charges the battery when grid power is cheapest — Intelligent Octopus Go at 7p/kWh overnight, or Octopus Cosy at 13p across three daily windows. That insulates you from the capped Standard Variable unit rate of 26.11p/kWh.
2. Use your own solar
Every kWh you self-consume from the panels or battery is a kWh you do not buy at the new cap rate. Self-consumption is the single biggest saving lever, worth far more per kWh than the export payment.
3. Export at the best time
A battery lets you hold surplus and export into peak SEG windows. On Intelligent Octopus Flux that can mean up to 32.17p/kWh — turning the wider import–export gap the cap rise creates into extra income.
The arbitrage widens, not narrows. Because the cap lifts the value of avoided grid imports while SEG export rates are set by contract (not the cap), the gap a battery can exploit has widened since 1 July. The shareable tip for everyone, battery or not: if you took a meter reading on 30 June, your usage up to that date was billed at the cheaper old cap.
Export (SEG) tariffs ranked — UK July 2026
These are the headline Smart Export Guarantee rates verified across the market in July 2026. Premium rates carry pairing conditions (see below); only the open-market tariffs accept any-supplier customers.
| Export tariff | Export rate | Rate type | Pairing rule |
|---|---|---|---|
| Intelligent Octopus Flux | up to 32.17p/kWh peak | AI-managed battery dispatch | Octopus electricity + supported battery brand |
| Octopus Flux | 5–29.32p/kWh variable | Three-window TOU | Octopus electricity required |
| Good Energy Solar Savings Exclusive | 25p/kWh | Flat | Good Energy install + Good Energy electricity |
| EDF Export Exclusive 12m V2 | 24p/kWh | Flat | EDF (Contact Solar) install + EDF electricity |
| E.ON Next Export | 16.5p/kWh | Flat | E.ON Next electricity preferred |
| British Gas Export & Earn Plus | 15.1p/kWh | Flat | British Gas electricity required |
| Ecotricity Export | 8.9p/kWh | Flat (open market) | Any supplier accepted |
| Outgoing Octopus Lite | 4.1p/kWh | Flat (open-market floor) | Any supplier accepted |
All eight require MCS-certified installation evidence at sign-up under SEG legislation. Rates verified July 2026 — export rates are set per contract and are not affected by the 1 July 2026 cap rise.
Import tariffs that pair well with a solar battery (July 2026)
A battery is only as cheap to charge as the import tariff behind it. These two smart tariffs give the lowest off-peak unit rates in the current market — well below the new 26.11p/kWh capped electricity rate.
Octopus Cosy (13p three-window)
Three off-peak windows (04–07, 13–16 and 22–00) at 13p/kWh let you charge the battery from the grid when prices are low, then run the house off stored power through peak hours. Pairs with Octopus Flux or Intelligent Octopus Flux for the strongest July 2026 import–export combo.
Intelligent Octopus Go (7p off-peak)
A 7p/kWh six-hour overnight window (typically 23:30–05:30) is the cheapest import rate in the July 2026 market and ideal for overnight battery top-ups. It requires a supported smart charger or compatible battery paired in the IOG app.
Pairing rules — which import unlocks which export
Same-supplier rule
To access Octopus Flux, Intelligent Octopus Flux, Good Energy Solar Savings Exclusive, EDF Export Exclusive or British Gas Export & Earn Plus, you must be on the same supplier’s electricity import tariff. Switching to a cheaper third-party import voids access to the premium export rate.
Install-channel rule
Good Energy Solar Savings Exclusive requires a system installed via a Good Energy MCS-accredited installer. EDF Export Exclusive V2 requires Contact Solar, EDF’s install partner. Retrofits fitted by independent MCS firms drop to the supplier’s lower open-market export rate.
Open-market exception
Ecotricity Export (8.9p) and Outgoing Octopus Lite (4.1p) are the only July 2026 SEG tariffs open to any-supplier customers — useful if you want to keep a non-tied import deal and still earn for export.
Worked earnings — 6 kWp PV + 10 kWh battery (verified July 2026)
A 6 kWp south-facing array generates roughly 5,400 kWh/yr in southern England. After self-consumption a typical household exports 3,000–3,500 kWh; battery arbitrage adds another 700–1,000 kWh of dispatched export on time-of-use tariffs. The figures below are illustrative export income only (your self-consumption saving is separate and usually larger).
| Export tariff | Effective £/kWh | Exported kWh/yr | Annual SEG earnings |
|---|---|---|---|
| Intelligent Octopus Flux (battery dispatched) | ~22p blended | ~4,200 | £924 |
| Good Energy Solar Savings Exclusive | 25p flat | 3,200 | £800 |
| EDF Export Exclusive V2 | 24p flat | 3,200 | £768 |
| E.ON Next Export | 16.5p flat | 3,200 | £528 |
| British Gas Export & Earn Plus | 15.1p flat | 3,200 | £483 |
| Ecotricity Export | 8.9p flat | 3,200 | £285 |
Bottom line for a typical July 2026 install: £550–£900/yr in SEG export income with a 6 kWp + 10 kWh setup, with the top end requiring a battery-dispatched time-of-use product such as Intelligent Octopus Flux. Add the import savings a battery delivers against the £1,862 cap and the combined annual benefit is materially higher.
How to choose — and who benefits most
Who benefits most
Homes with a battery and a smart import tariff benefit most, because they can charge cheaply off-peak, ride out the capped peak rate on stored power, and export when SEG rates are highest. South-facing roofs in southern England, higher daytime occupancy and an EV (for off-peak charging) all push the numbers further. Even without a battery, a strong flat SEG rate like Good Energy 25p still rewards surplus generation.
A five-step checklist
1. Confirm your install is MCS-certified (required for any SEG tariff).
2. Decide whether you will tie your electricity to the export supplier for a premium rate, or keep an open-market import and accept Ecotricity/Outgoing Octopus.
3. Pick the import tariff — Cosy or Intelligent Octopus Go for battery charging.
4. Match the highest export rate your pairing allows.
5. Compare the total annual position (import saving + export income), not just the headline export number.
Policy backdrop — VAT, MCS and SEG (July 2026)
0% VAT on battery storage
Domestic battery storage — standalone or retrofit — attracts 0% VAT through 2026. HM Treasury’s May 2026 Budget extended the relief through 2027, locking in a meaningful capex saving for households adding or scaling battery capacity.
MCS certification mandatory
Every SEG tariff above requires MCS install certification. Self-build or non-MCS installs cannot register for SEG payments — but they can still self-consume and cut import bills via a battery on Octopus Cosy or Intelligent Octopus Go.
SEG floor unchanged
Ofgem’s SEG floor remains 1p/kWh in 2026 — the mandatory minimum any licensed supplier with over 150,000 customers must offer. Outgoing Octopus Lite (4.1p) sits just above this floor as the open-market default.
Frequently asked questions — solar + battery tariffs (July 2026)
What is the best solar export tariff in the UK in July 2026?
Intelligent Octopus Flux pays up to 32.17p/kWh during peak windows with AI-managed battery dispatch — the highest headline rate verified July 2026. For flat-rate simplicity, Good Energy Solar Savings Exclusive at 25p/kWh leads, but it requires a Good Energy install and import tariff. Use the comparison form on this page to confirm pairing eligibility for your home.
How does a battery and a smart tariff beat the £1,862 price cap?
The cap raises the cost of grid electricity to a capped 26.11p/kWh from 1 July 2026. A battery charged on a smart tariff (Intelligent Octopus Go at 7p, or Octopus Cosy at 13p) lets you avoid that capped peak rate, run the home off stored power, and export surplus into the highest SEG windows. So a battery owner cuts import costs and earns export income at the same time — turning the rise into a saving rather than a cost.
Will the 1 July 2026 cap rise affect my SEG export payments?
No. SEG export rates are set per tariff contract and are not linked to the default cap. The cap rise actually widens import–export arbitrage for battery owners on time-of-use products, making Intelligent Octopus Flux economics more favourable from July 2026 onwards.
Do I have to be on the same supplier’s electricity tariff to access their export rate?
For premium rates, yes. Octopus Flux, Intelligent Octopus Flux, Good Energy Solar Savings Exclusive, EDF Export Exclusive and British Gas Export & Earn Plus all require you to be on the same supplier’s import tariff. Only Ecotricity Export (8.9p) and Outgoing Octopus Lite (4.1p) accept any-supplier customers.
How much can a 6 kWp PV + 10 kWh battery setup earn in July 2026?
Typically £550–£900/yr in SEG export income. The lower end is achievable on a flat rate such as E.ON Next Export at 16.5p/kWh with no battery dispatch; the top end (£900+) requires Intelligent Octopus Flux’s AI-managed battery dispatch into peak windows. The import savings a battery delivers against the £1,862 cap are additional.
What import tariff should I pair with my solar battery?
For Octopus Flux or Intelligent Octopus Flux export, pair with Octopus Cosy (13p three-window) or Intelligent Octopus Go (7p off-peak) to enable battery arbitrage during low-price windows. For non-Octopus exports, pair with the supplier’s cheapest fix and self-consume from PV directly.
Do I need MCS certification to get a solar export tariff?
Yes. Every July 2026 SEG tariff requires MCS install certification at sign-up. Non-MCS installs cannot register for SEG payments under current legislation, though they can still self-consume and reduce import bills via a battery.
Is battery storage still 0% VAT in 2026?
Yes. Domestic battery storage — standalone or retrofit — remains at 0% VAT through 2026, with HM Treasury’s May 2026 Budget confirming extension through 2027. This applies to both AC- and DC-coupled batteries installed alongside or after a solar PV array.
Lock in the right import–export pairing now the July cap has risen
The cap rose £221 on 1 July 2026. The export best-buys above let solar + battery households turn that rise into a tailwind — widening the arbitrage on every dispatched kWh. Get matched to the best pairing for your install, or get a quote for adding panels and a battery.
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