Solar panels with Octopus

Reviewed May 2026 against Octopus Outgoing and SEG guidance, Energy Saving Trust solar guidance and current Flux availability. Export rates and tariff eligibility can change, so use the linked Octopus tariff pages before making a decision.

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 or smart meter.

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 Q2 2026 electricity unit-rate benchmark is 24.7p/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.

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 should now be treated as legacy context for most new switchers. Octopus’s Flux page currently says the tariff is temporarily unavailable, so do not plan a new solar purchase around joining standard Flux unless Octopus reopens it. Intelligent Octopus Flux is a separate automated battery option with 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 export 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. The DNO stage can take longer than the Octopus account stage, so it is sensible to start the export application before assuming a particular payment date.

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.

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. 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. If you use Matt’s referral code when switching, both you and Matt should receive the Octopus referral credit once Octopus confirms the terms have been met.