Solar panels with Octopus

If you have solar panels, Octopus is worth comparing because the import tariff, export tariff and any battery or EV plan can all affect the result. The useful question is not simply whether Octopus pays a good export rate. It is whether the whole setup helps you use more of your own generation, sell surplus at a fair rate and avoid choosing a tariff that clashes with your battery, EV charger, battery controls or smart meter.

The practical points are:

• Octopus now groups the main export choices on its export hub: Outgoing and Agile Outgoing for many Octopus import customers, SEG for export-only customers, standard Flux and Intelligent Octopus Flux for solar-plus-battery homes, and separate business export routes. Start from the live hub rather than an old bookmarked tariff page.
• Ofgem’s SEG page says suppliers set their own SEG rates, contract length and commercial terms, and payments use export meter readings. Compare the actual export tariff and payment route, not just the headline p/kWh figure.
• Outgoing is still the simple fixed export route and Agile Outgoing is still the variable half-hourly export route. Treat any quoted export rate as a checked-date figure and verify the live Octopus page before modelling payback.
• Standard Flux is the manual solar-and-battery import/export route to check on Octopus’s live pages. Intelligent Octopus Flux is separate, automated, currently availability-limited and depends on supported battery brands, solar panels and smart-meter setup.
• Octopus smart-tariff terms still make compatible smart meters and half-hourly readings central. Solar, inverter, battery and charger app data can explain what happened, but it is not the final billing or export-payment record.

Start with the electricity flows

Solar panels create value in two different ways. If the terms still feel slippery, start with our guide to solar import, export and generation, then come back here for the Octopus tariff side.

Self-consumption is usually the highest-value part. Every unit your home uses directly from the panels is a unit you do not buy from the grid. On a standard variable tariff, the Q3 2026 electricity unit-rate benchmark is 26.1p/kWh, although your actual rate depends on region, payment method and tariff.

Export is the second stream. When your panels generate more than the home can use or store, the surplus goes back to the grid and your export tariff pays you for it. That payment matters, but it is usually lower than the avoided import cost, so the balance between using, storing and exporting is the core solar decision.

The export choices Octopus offers

Octopus has two different roles here. It offers a basic Smart Export Guarantee tariff for people who want export payments while keeping their import electricity with another supplier, and it offers Outgoing Octopus options for Octopus import customers. Its current export hub also points solar-plus-battery homes toward Flux or Intelligent Octopus Flux, so check the import and export pairing before treating one export rate as portable across every Octopus tariff.

Smart Export Guarantee is the fallback export-only option. At the time of writing, Octopus says its SEG tariff pays 4.1p/kWh. The advantage is that you do not have to move your import supply to Octopus. The trade-off is that Octopus says its stronger export rates are on the Outgoing tariffs for Octopus customers. Check the current SEG terms on the Octopus SEG page.

Outgoing Octopus is the simple fixed export option for Octopus import customers. At the time of writing, Octopus lists it at 12p/kWh after the 1 March 2026 change from 15p. It is still a straightforward choice for many solar households because the payment is predictable, but it should not be treated as an evergreen rate. Check the latest terms on the Outgoing Octopus page and Octopus’s March 2026 export-rate explanation.

Agile Outgoing tracks half-hourly wholesale prices. It can suit homes with a battery or flexible export behaviour because you may be able to export when prices are higher. It can also disappoint if most of your surplus leaves the house during sunny, low-demand periods. Choose it because you understand the variability, not because one good historical slot looked attractive.

Standard Flux is now the manual solar-and-battery route to check on Octopus’s live pages. Do not plan a new solar purchase from old unavailable/legacy notes; check the current Flux page, export setup and smart-meter requirements. Intelligent Octopus Flux is a separate automated battery option that can be paused during volatile periods and has its own live eligibility checks for supported battery brands, solar panels and smart-meter setup. The Flux reference guide is the better next step if you are comparing those battery routes.

What Octopus needs before it can pay export

Export payments are not just a tariff choice. The paperwork and metering need to be in place.

Octopus says the Outgoing setup normally involves applying to the Distribution Network Operator for an export MPAN, enrolling that MPAN and connecting to a smart meter capable of export readings. Its public process currently frames the Octopus application stage as roughly two days, the DNO export-MPAN stage as one to four weeks and enrolment as around five days after the MPAN exists. Treat those as planning ranges, not promises, because the DNO stage is outside Octopus’s control.

You should also check the installation documents. Octopus’s SEG guidance says the renewable system normally needs appropriate certification, such as MCS or an equivalent accepted route, plus a meter capable of half-hourly export readings. If your installer, DNO paperwork or export MPAN is missing, the tariff decision may be ready before the account can actually pay export.

How much solar a typical home might generate

Energy Saving Trust says solar panels work best on an unshaded, south-facing roof, but east- and west-facing roofs can still be viable. It describes a typical domestic system as around 3.5kWp, with output depending on roof direction, shading, location and household usage.

For planning purposes, a 3.5 to 4kWp UK system is often discussed in the broad range of roughly 3,000 to 3,500kWh a year, but that is not a promise. A shaded west-facing roof in northern Scotland and an unshaded south-facing roof in southern England are not the same asset. Use installer estimates, Energy Saving Trust tools and your own annual usage rather than a single national average.

The seasonal swing is also large. Summer may produce more electricity than the home can use during the day, while winter may leave you importing most of what you need. This is why export rates, batteries and EV charging patterns matter so much.

Batteries and EVs change the answer

Without a battery, many homes export a large share of their daytime generation. With a battery, more of that generation can be stored for the evening, which may cut import more than a slightly better export rate would. The battery still has its own cost, capacity limit and degradation, so it should be sized around real usage rather than a headline promise.

EVs add another layer. If you can charge at home during sunny periods, solar can directly reduce grid import. If most charging happens overnight on Intelligent Octopus Go or Octopus Go, the solar panels and EV tariff may be solving different problems: solar covers daytime household use and export, while the EV tariff covers cheap overnight charging.

Hybrid homes need to check compatibility rather than assuming every smart product fits together. For example, an EV tariff may restrict which export tariff can be paired with it, and a battery strategy may work better on Agile than on a simple fixed import tariff. Our battery storage strategies, export rates guide and tariff comparison tool are better next steps than guessing from one rate.

Set one main control route before you rely on the saving. If the inverter, battery app, EV charger, car app and Octopus app all try to schedule the same electricity, the home can export when you meant to store, charge the EV when you meant to fill the battery, or leave a cheap period unused. Choose which system is allowed to optimise the battery or charger, then use the other apps as evidence and monitoring rather than competing schedules.

For billing and export disputes, keep the order of evidence clear. Inverter, solar, battery and charger screenshots can help explain what happened, but Octopus billing and export payments depend on smart-meter import and export data, half-hourly readings where the tariff requires them and the tariff terms you accepted.

A simple decision path

1. Estimate annual generation from your roof, not from a national average.
2. Work out when you use electricity and whether a battery or EV can soak up daytime solar.
3. Check whether you want Octopus for import, because that affects which export tariffs are available.
4. Confirm the export MPAN, smart meter and certification paperwork before relying on export income.
5. Decide which app or tariff is allowed to control the battery or charger.
6. Compare Outgoing, Agile Outgoing and any compatible import tariff together.

If Octopus looks like a good fit after those checks, you can switch first, then apply for the relevant export tariff once your account and export setup are ready. The referral page explains how to use the Octopus referral after you have checked the tariff fit and export route.