How Octopus Energy Tariffs Work with Solar Panels: What You Should Know

If you already have solar panels, or you are weighing them up, the Octopus solar panels tariff you settle on changes what your system is actually worth to your household. We have lost count of the number of surveys where a homeowner has done real homework on panels and batteries but has not yet worked out which Octopus tariff their system should be built around. It is the part of the decision that gets the least attention and moves the most money.

We are an Octopus Energy Trusted Partner, so we design systems that work with live Octopus tariffs every week, not from a page we read once. This guide covers how Octopus Energy’s solar panels tariffs work in practice, what has genuinely changed with Octopus Flux and Intelligent Octopus Flux, how the Smart Export Guarantee sits underneath all of them, and what we check before we recommend a specific Octopus tariff and battery combination for your solar panels.

Why your tariff choice matters as much as your solar panels

Two identical solar and battery systems on different Octopus tariffs can produce meaningfully different value over a year. Your panels generate the same electricity either way. What changes is how much that electricity is worth: what you pay to import power your panels do not cover, and what you are paid for anything you send back to the grid.

We treat Octopus tariff integration as part of the system design, not an afterthought you sort out once the panels are up. A system specified without considering your likely Octopus tariff can leave real money on the table, particularly where a battery is involved, because a battery’s usefulness depends entirely on which import and export windows it can actually exploit. That is a decision we make with you at the point your solar panels are specified, not something either of us works out after installation.

Octopus Energy’s solar panels tariffs for import

Octopus Energy runs several import tariffs that suit different solar panels and battery setups, and we size the battery and inverter differently depending on which one you are likely to end up on. Agile Octopus prices change every half hour in line with wholesale electricity prices. It suits you if you are flexible about when you use electricity, or if your battery can be scheduled or automated to charge when prices are lowest. The trade-off is that Agile asks for either active engagement from you or a battery system set up to respond to it automatically, and we are honest with customers about which type they actually are before we recommend it.

Octopus Go and Intelligent Octopus Go take a simpler approach: a fixed, cheap overnight window for charging a battery or an EV, without the day-to-day price tracking that Agile asks for. We tend to recommend this route if you want predictability over active management, and it pairs well with a battery that just needs topping up once a day rather than managed continuously.

Cosy Octopus is built around three daily off-peak windows, but it requires an eligible electric heating system, such as an air source or ground source heat pump, an electric boiler, or electric radiators, to sign up. It is not an option for a solar-and-battery household on its own without one of those installed, whatever the daily rhythm looks like.

Rates on all of these tariffs move with wholesale prices and Ofgem’s price cap, so treat any specific pence-per-kWh figure you read here, or anywhere else, as a snapshot rather than a fixed number. We will check the current Octopus energy solar panels rate for your postcode before we recommend anything, rather than quote you a figure from memory.

Octopus Energy’s export tariffs: getting paid for what you send back

Export tariffs pay you for electricity your panels generate that your household does not use and does not store. Outgoing Octopus is the option we suggest most often for solar panels without a battery: a flat rate for every unit exported, currently 12p per kWh according to Octopus Energy’s own Outgoing Octopus tariff page, having been reduced from 15p per kWh on 1 March 2026. It suits you if you are solar-only, or if you would rather have a predictable export figure than track peak windows.

Prime Outgoing Octopus splits the day into two bands instead of one flat rate: a higher rate during the 4pm to 7pm peak window and a lower rate the rest of the day. This suits you if you can shift more of your solar panels export into the evening, typically because your battery is holding daytime generation back until the peak window opens.

Agile Outgoing tracks wholesale export prices on a half-hourly basis, which can pay considerably more than a flat rate during genuine peak demand, but it asks for either active monitoring from you or a battery system set up to export automatically when prices are highest. We recommend it to engaged households with a battery far more often than to anyone running a simple solar-only system.

Advanced Octopus battery tariff options: Flux and Intelligent Octopus Flux

Octopus Flux is the tariff we design most of our battery installs around. It is a three-rate tariff built specifically for solar panels paired with battery storage, combining import and export pricing across the same day: a cheap off-peak import window from 02:00 to 05:00, a standard rate for the rest of the day, and a peak window from 16:00 to 19:00 where both import and export rates rise. The idea is to charge the battery overnight when import is cheap, then use or export that stored energy during the peak window when it is worth more. Octopus Energy’s own Octopus Flux tariff page confirms this structure and, as of mid-2026, the tariff remains open to new customers.

Intelligent Octopus Flux is the automated version of the same Octopus battery tariff idea: instead of you scheduling the battery, Octopus manages charging and discharging based on your battery’s state and the day’s pricing. This is the one we tell customers to check carefully right now. Octopus’s own Intelligent Octopus Flux page currently states that the tariff is temporarily unavailable to new customers because of energy price volatility, while pointing new applicants toward standard Octopus Flux in the meantime. If you already have Intelligent Flux, you keep it. This status can change, and we would rather check it with you directly than assume either way.

Battery brand compatibility is the other detail we check rather than assume. Octopus’s own Intelligent Octopus Flux FAQ currently confirms integrations with Enphase, SolarEdge and Tesla Powerwall batteries. Octopus’s separate eligibility-checking tool lists a wider set of brands for registering interest, which does not necessarily mean full current integration. We are honest with you about this: we check the live position for your specific battery and Octopus solar panel tariff at survey stage rather than working from a remembered brand list, because Octopus’s own pages do not always agree with each other on this point.

You will also need a solar battery storage system in place before either Flux tariff becomes relevant. Neither version is available to you if you are solar-only without a battery.

The Smart Export Guarantee: the regulatory floor under every export tariff

The Smart Export Guarantee, or SEG, is the government scheme that sits underneath every export tariff on the market, including Octopus Energy’s solar panels tariffs. It requires licensed electricity suppliers with more than 150,000 customers to offer at least one export tariff paying above zero for every kWh you export. Octopus’s own tariffs, including Outgoing Octopus and Flux, sit well above that regulatory floor. It is one reason we default to Octopus for most of our Surrey and Hampshire customers.

Take-up has grown sharply. Ofgem’s SEG Year 5 Annual Report recorded 270,395 installations registered to a SEG tariff by the end of March 2025, a 63 per cent increase on the 166,022 registered a year earlier. The South East, the Ofgem region that covers Surrey and Hampshire, had the highest number of registered installations of any region in Great Britain, at 48,584, or 18.0 per cent of the national total. That regional weighting matches what we see on the ground week to week.

MCS certification is the gateway to this whole system, and we would push back on anyone who tells you it is the differentiator. Suppliers generally require an MCS certificate, or equivalent, before registering a solar PV installation for a SEG tariff, but MCS on its own is table stakes for solar installation now, not a mark of quality. What actually varies between installers is whether your Octopus tariff and battery setup is designed to make proper use of it once you are registered.

DIY solar panels and Octopus’s Outgoing Octopus route

Octopus is one of the suppliers that lets you register for an export tariff even if your solar panels were not put in by an MCS-certified installer, through a separate certification process run directly with Octopus rather than through a standard installer’s MCS paperwork. That is a genuinely useful route for some people, and we will not pretend otherwise, but it adds an extra administrative step and a separate fee compared with an MCS-certified installation, where we build SEG eligibility into the install itself rather than leaving it as an afterthought.

If you are weighing a DIY solar panels install against an MCS-certified one specifically to save money at this stage, add the cost and time of Octopus’s own certification route into that comparison. It is not a free alternative to using an MCS-certified installer from the outset, and we would rather you went in with that clear than find out later.

How Viable Power sets your system up for the right Octopus tariff

As an Octopus Energy Trusted Partner, we design your solar panels and battery system around the tariff you are on, or the one you are moving to, rather than treating tariff choice as something to sort out after we have left. In practice, that means we confirm your likely Octopus solar panels tariff before we finalise battery size and inverter choice, because those decisions change depending on which tariff and windows the system needs to work with. Getting this order wrong is exactly the kind of mismatch we see when a household has bought a system from someone who never asked the tariff question at all.

Every tariff covered in this article needs half-hourly meter readings, so we confirm your smart meter is actually providing them, not just sitting there installed. We also handle MCS certification and the DNO export MPAN notification as part of the installation itself, rather than leaving them as a separate step for you to chase up afterwards. You can read more about our Octopus Energy Trusted Partner status and our other accreditations, including MCS and NICEIC.

Frequently Asked Questions

Is Octopus Flux still available in 2026?

Standard Octopus Flux is currently open to new customers. Intelligent Octopus Flux, the automated version, is currently paused for new sign-ups because of energy price volatility, though existing Intelligent Flux customers keep the tariff. This status can change, so it is worth checking directly with Octopus or with us before assuming either way.

What is the current Outgoing Octopus export rate for solar panels?

Outgoing Octopus currently pays a flat 12p per kWh for exported electricity, cut from 15p per kWh on 1 March 2026. Export rates move with wholesale prices and Ofgem’s price cap, so treat any figure, including this one, as a snapshot and check the current rate on your account before switching.

Which batteries work with Intelligent Octopus Flux?

Octopus’s own current confirmed integrations are Enphase, SolarEdge and Tesla Powerwall batteries. Octopus’s separate eligibility tool lists a wider set of brands for registering interest, which is not the same as full current integration. We confirm your specific battery’s current eligibility at survey stage rather than relying on a remembered list.

Do I need a smart meter for Octopus’s solar panels tariffs?

Yes. Every Octopus tariff covered in this article, from Agile to Flux, needs half-hourly meter readings to work. Having a smart meter installed is not enough on its own. It also needs to be actively providing half-hourly data to Octopus, which is something we check rather than assume during setup.

Do I need an MCS-certified installation to get Octopus’s export tariffs?

MCS certification is the standard route into Smart Export Guarantee-based export tariffs, and suppliers generally require an MCS certificate to register a solar PV system. Octopus separately runs a certification process for systems that were not installed by an MCS-certified installer, but this adds an admin step and a separate fee compared with an MCS-certified install, where SEG eligibility is built into the install process.

Is being an Octopus Trusted Partner the same as being MCS-certified?

No, they are different things. MCS certification is a national technical standard required for Smart Export Guarantee eligibility. Octopus Trusted Partner status is Octopus’s own separate vetting of an installer’s customer service, technical accreditation and consumer-code membership for solar panels and related work. Viable Power holds both, alongside NICEIC approval for electrical work.