Why Octopus export rates changed, and what solar homes should check now

The current solar conversation can be frustrating because two things can be true at once. Import-side headlines can get noisier again, while export payments stay lower or flatter than people expect.

That feels unfair at first glance, especially if you remember the previous Outgoing Octopus flat export level. It is also why plenty of households start comparing the wrong numbers. Export is not a reverse version of your import tariff. It is a separate product with different costs, different constraints and a different job.

Octopus's own March 2026 explanation makes that clear. The supplier says the flat Outgoing rate fell to the March 2026 export-rate cut from 1 March 2026, its first export-rate change since 2022. It also says export prices are lower than import because import tariffs carry levies and other charges that do not come back when you export, while export tariffs also have their own admin costs and no standing charge to spread those costs across.

1. What actually changed

The simple factual change is this: Outgoing Octopus moved to a lower flat export rate in March 2026 instead of the previous level. The tariff still does the same basic job. It pays a flat rate for every metered unit you send back to the grid, and it is still the simpler choice for people who do not want half-hourly export prices bouncing around.

What changed is the margin for error. At the previous higher rate, it was easier to treat export as a decent headline in its own right. After the March 2026 cut, the value of keeping a unit at home instead of exporting it looks starker for most households.

2. Why export does not rise and fall with import

This is the bit that tends to get muddled. Your import tariff pays for a full retail energy product. That includes wholesale electricity, network charges, policy costs and supplier overhead. Export does not work like that.

• Import rates include extra charges that suppliers do not pay back to you when you export.
• Export tariffs have no standing charge, so their own admin and metering costs have to come out of the unit rate.
• Most flat-rate export happens when supply is plentiful, especially around sunny daytime periods when lots of homes are generating at once.
• The SEG rules are loose on pricing. Ofgem requires suppliers to pay above zero, but it does not set a generous minimum rate for everyone.

That is why a household can look at its import price, see something around 24.7p/kWh on a standard tariff, then feel short-changed by a lower export payment. They are not mirror images of the same market price.

3. The more useful comparison for most homes

The better question is usually not "why did the flat export rate fall?" It is "what is each spare unit worth in the best realistic place?"

If you export 10 kWh on Outgoing Octopus, your income depends on today's flat export rate. If you can keep that same 10 kWh in the house instead, through daytime usage or battery shifting, you may avoid buying the same units back at your standard import rate.

The exact figure varies by your import tariff, of course. The pattern is the important part. Self-consumption usually does more of the heavy lifting than export payments. The March cut did not create that truth, but it made it harder to ignore.

4. What solar homes should check now

Check your real self-consumption first

Before changing tariffs, work out how much of your solar you actually keep. Homes with strong daytime use, immersion timers or a battery can still do well because fewer units reach the lower export rate in the first place.

Check whether fixed export still fits your setup

Outgoing Octopus is still the easy option if you want predictability. If you have a battery and you are willing to think about timing, Agile Outgoing may now deserve a harder look because the upside from timed export matters more once the flat fallback is lower.

Check your import tariff separately

Do not let export disappointment push you into a muddled import decision. The best import tariff depends on how the home uses electricity overall. A solar household with an EV and battery is solving a different problem from a solar-only household with daytime occupancy and no storage.

Check whether you are comparing against a weak SEG deal elsewhere

The lower March 2026 rate is worse than the previous flat export level, but it can still be far ahead of many bare-minimum SEG-style offers. If you are comparing Outgoing with a very low export deal from somewhere else, the flat Octopus rate can still be the sensible choice even after the cut.

Check legacy assumptions before rebuilding your solar maths

A lot of older advice still quietly assumes Flux is the modern default, or that export payments will do most of the financial work. Neither assumption is a safe starting point now. Flux is legacy for existing customers, and newer households usually need to think in terms of self-consumption first, export second.

5. When the lower flat export rate is still perfectly reasonable

The lower rate is not automatically a reason to rethink everything. Fixed Outgoing still makes sense if most of these points apply:

• you want a simple export setup with no half-hourly micromanagement
• you do not have a battery, or do not want to optimise one actively
• your alternative SEG options are much weaker
• your main gains already come from using your own solar at home

In that situation, the cut is annoying rather than fatal. It trims the export side of the return, but it does not suddenly make a sensible solar setup irrational.

6. When it is worth revisiting the setup

It is worth doing a fresh comparison if you have a battery, if your exports are regularly high in summer, or if your import-side habits have changed. A household that now charges a battery overnight, runs an EV, or exports large afternoon surpluses may need a more deliberate import-and-export pairing than it needed a year ago.

That does not always mean leaving fixed Outgoing. It just means the old assumption of exporting at the previous flat rate and forgetting it needs another look.

Bottom line

The fairest way to read the March 2026 change is that it exposes which solar arguments were always a bit too simple. Export payments matter, but they are not the whole model. The households that still come out strongest are the ones treating solar, storage and tariffs as a joined-up system.

Do not obsess over matching your export rate to your import rate, because that is not how the market works. Check how much solar you keep, whether a fixed export tariff still suits your habits and whether your import tariff still matches the rest of the home. Those three checks are more useful than focusing only on the gap versus the old rate.