Can You Export Electricity From a Home Battery Without Solar? UK

Yes, sometimes. You can physically push power from a grid-charged home battery back to the grid with no solar panels at all, and a supplier like Octopus will pay you for it on its own export tariff. The catch is that the statutory Smart Export Guarantee will not pay for electricity you imported from the grid, you still need your network operator to approve the battery, and after round-trip losses the money is thin. This page separates what is technically possible, what a supplier will actually pay for, and when the maths is worth the effort.

Can you export from a home battery without solar in the UK?

Technically yes: if your battery inverter is allowed to export, it does not care whether the stored energy came from the sun or from a cheap overnight grid tariff. Getting paid is the harder part. The statutory Smart Export Guarantee will not pay for grid-charged electricity, so you need a supplier that runs its own commercial export tariff, plus network approval before you connect.

That is the whole confusion in one sentence. People read “export tariff” and assume any battery that pushes power to the grid gets paid. In practice, payment depends on which scheme you are on. One scheme is designed only for renewable generation. The other is a supplier choosing, commercially, to buy your exported units whatever their origin. A grid-charged battery lives or dies on the second one.

Why the SEG will not pay, but a supplier tariff might

The Smart Export Guarantee is a statutory scheme that runs in Great Britain, with Northern Ireland handled separately. Ofgem lists its eligible technologies as solar PV, wind, hydro, micro-CHP and anaerobic digestion, up to 5MW (50kW for micro-CHP). A home battery is not on that list. On its own it generates nothing; it only stores and returns electricity.

Battery storage can sit inside an SEG arrangement, but only when it is charged by eligible generation. The Energy Saving Trust is explicit that suppliers do not have to pay for non-renewable electricity, though some choose to, and that a supplier may pay the SEG only for the electricity your low-carbon system actually generated, asking you to show how you separate it from grid-charged units. A battery-only home has no eligible generator at all, so it is not an eligible SEG installation in the first place. A battery filled from the grid returns electricity that was generated elsewhere and already sold to you once, which is not what the SEG exists to reward.

A supplier’s own export tariff is a different animal. It is a commercial product, not the statutory scheme, so the supplier sets the rules. That is the gap a grid-charged battery has to fit through, and today it is a narrow one.

Which suppliers pay for battery-only export?

The practical answer in mid-2026 is Octopus, through its Outgoing product rather than an SEG tariff. Octopus states plainly that you do not have to be generating energy to benefit, and that you can store cheap grid electricity and export it later at peak prices. It even lists charging a home battery when energy is cheapest, and a vehicle-to-grid EV, as valid ways to feed the grid. That is a supplier openly accepting grid-charged export.

Two details make it usable for a battery-only home:

• No MCS certificate required. Octopus runs a non-MCS export route, so a home without an MCS or equivalent certificate can still apply. I went through that same non-MCS route to export from my own DIY solar system; on paper the paperwork does not turn on whether solar or a grid-charged battery sits behind the meter, though my own experience is with solar, not a battery-only home.
• The flat Outgoing rate is a single unit price, not a fixed-term lock. As of July 2026 it pays 12p per kWh, cut from 15p on 1 March 2026, and Octopus can change it. Two variable alternatives suit a battery you can schedule: Prime Outgoing pays a higher 16p per kWh in the 4pm to 7pm peak and 9p the rest of the day, while Agile Outgoing tracks half-hourly wholesale, so its evening peaks can beat the flat rate but sometimes fall near zero. If you can automate discharge into the peak window, a time-of-use rate usually beats the flat one.

Treat other mainstream suppliers as a no by default. Their export tariffs are built around an MCS or equivalent (Flexi-Orb) certificate, so a DIY grid-charged setup with no certificate usually falls outside them, even where the supplier will take a certified battery install. Octopus is the exception that proves the rule, not evidence that the market has opened up. Octopus also does not spell out in black and white that it will enrol a home with no generation asset at all, and rates and acceptance rules change, so confirm battery-only eligibility with Octopus in writing before you pay the £250 non-MCS fee or start DNO paperwork.

You still need DNO approval and an export MPAN

A battery that can push power onto the network is treated as generation for connection purposes, even with no panels. That means your Distribution Network Operator has to know about it before it exports, under the same engineering rules that cover solar.

• G98, fit and notify. For a single-phase inverter up to 16A per phase (about 3.68kW of export), you can commission first and notify the DNO afterwards.
• G99, apply first. Above that export rating you need a full application and DNO approval before you energise. Assessment can take several weeks.
• Assessed on export power, not battery size. A 10kWh battery on a 3.6kW inverter is judged on the 3.6kW it can push, not the stored kWh. If you already have solar or another inverter, the DNO looks at the combined export capability at your connection, not one device on its own.

The DNO can also grant the connection with an export limit, capping how many kW you may push to the grid even if the inverter could do more. That directly caps how much a battery can sell in any half hour.

One more document trips people up. Your DNO approval letter is not an export MPAN. The MPAN is a separate metering identifier for energy leaving the property, and your supplier requests it from the DNO after you apply. Without an MPAN, a meter can watch power flow out and still credit you nothing. You also need a smart meter that can send half-hourly export readings, which covers almost all SMETS2 meters and most SMETS1 meters. Requesting the export MPAN is usually the slowest part of the whole process, because the DNO creates it and that stage can take one to four weeks.

How do you actually set up battery-only export?

The path follows the same non-MCS Octopus route I used to get my own DIY solar system exporting. On paper that route does not distinguish a solar array from a grid-charged battery behind the meter, but I have not taken a battery-only home through it myself, so the steps below follow that paperwork against Octopus’s published rules. It runs in this order.

1. Get the DNO sign-off first. Notify under G98, or apply and wait for approval under G99, set by your inverter’s export rating.
2. Gather the paperwork. Octopus asks for your DNO acceptance letter, the electrical installation certificate for the battery and inverter, and a Building Regulations compliance certificate (not needed in Scotland).
3. Apply through the non-MCS export form. You must already buy your import electricity from Octopus, and the non-MCS route carries a £250 fee.
4. Wait for the export MPAN and first reading. Octopus requests the MPAN from your DNO, enrols it, then asks you for an opening meter reading. Budget two to three weeks once your documents are in, plus the DNO’s own MPAN turnaround.

There is no approved-device list to satisfy. Octopus checks the paperwork above, so any grid-connected inverter type-tested to G98 or G99 and signed off on your electrical certificate qualifies. An off-grid inverter that cannot legally push to the grid does not.

Does charging from the grid to export actually pay?

This is where most battery-only export plans quietly fall apart. Buying a unit, storing it and selling it back is only profitable if the export price, after losses, beats what you paid to import it. Two things eat the margin: the gap between cheap import and the export rate is small, and a battery gives back less than you put in.

A home battery does not return every unit it stores. Round-trip efficiency is commonly quoted around 85 to 90 percent, so treat a stored kWh as roughly 0.85kWh coming back out. Here is the arithmetic with illustrative July 2026 rates. Use your own tariff numbers, not these.

Now put a number on that wear. As an illustrative model, a DIY LiFePO4 pack at around £170 per usable kWh, rated for roughly 6,000 cycles, works out near 3p for every kWh you push through it. That is an estimate, and an installed premium battery at two to three times the price per kWh costs proportionally more per cycle. Subtract even the DIY figure and the export column lands near zero, while the same stored unit used at home still clears well over 10p, because avoiding a 28p peak import is worth far more than earning 12p selling it.

So the honest verdict on pure grid-charge-and-export arbitrage is that it rarely clears a useful profit. The stored energy is almost always worth more used in your own home than sold back. Export from a battery makes sense for genuine surplus, not as a business model of buying low and selling high.

So should you set it up?

Setting up battery-only export is worth the paperwork in a narrow set of cases, and a waste of it in most.

• Worth doing if you already export through a supplier that pays regardless of source, and you occasionally have real surplus in the battery you cannot use at home. Selling it at 12p beats leaking it to the grid for nothing.
• Worth doing if you are on a time-of-use export tariff where the peak window pays enough to beat your cheap import plus losses, and you can automate the discharge into that window.
• Not worth doing as a money-making scheme built on cheap import and flat export. The margin is a few pence a cycle before wear, and self-consumption beats it comfortably.
• Not worth doing if you would skip DNO approval or export past an agreed limit to make the numbers work. That is not a maybe; connecting or exporting outside the DNO’s rules is non-compliant connection practice with real safety and network consequences.

For most homes without solar, the battery earns its keep by shifting cheap overnight power into expensive daytime hours inside the house. Export is a small bonus on top, not the reason to buy.

Frequently asked questions

Is it legal to export grid-charged battery power?

There is no law against selling grid-charged units back, and Octopus openly permits it under its Outgoing terms. What you cannot do is bypass the network rules. Connecting or exporting outside G98 or G99, or pushing past the export limit the DNO sets, is non-compliant connection practice with real safety and network consequences, not a grey area you can quietly ignore. Register the battery correctly and stay within your agreed limit, and selling grid-charged units back is a normal commercial arrangement.

Do you need solar panels to get an export tariff?

Not for Octopus Outgoing, which accepts homes that are not generating and runs a non-MCS route. You do need panels for most other suppliers, because their export deals are built around an MCS certificate for a solar install. A battery-only home has no such certificate, so those doors stay shut.

Why will the SEG not pay for battery export?

The Smart Export Guarantee pays for electricity from eligible low-carbon generation: solar PV, wind, hydro, micro-CHP and anaerobic digestion. A battery generates nothing. When it is charged from the grid, the units it exports were generated elsewhere and already sold to you, so there is nothing for the SEG to reward. It only works when the battery is filled by eligible generation you own.

Does a home battery need DNO approval even without solar?

Yes, if it can export. The DNO treats an exporting battery as generation and assesses it on the inverter’s export power. Up to 16A per phase you can use the G98 fit-and-notify route; above that you need G99 approval before energising. The battery’s kWh capacity does not change which route applies, only the export kW does.

Is battery export income taxable?

Do not assume it is automatically tax-free. Genuine domestic microgeneration export can fall under specific tax exemptions, but buying grid electricity to store and sell back is a different activity, closer to trading, and HMRC judges income by what it is rather than what you call it. The sums here are usually tiny, so tax rarely bites, but if export income ever becomes material, check current HMRC guidance rather than assuming nothing is due.

Sources

• Ofgem, Smart Export Guarantee (SEG): eligible technologies and 5MW capacity limit.
• Energy Saving Trust, Smart Export Guarantee explained: suppliers do not have to pay for non-renewable electricity, and a supplier may pay the SEG only for what your low-carbon system actually generated.
• Octopus Energy, FAQs about Outgoing Octopus: you do not have to be generating to benefit, home batteries and V2G EVs can export, and a non-MCS route exists.
• Octopus Energy, Outgoing export price change, 1 March 2026: flat Outgoing rate context.
• Energy Networks Association guidance on G98 and G99 connections: storage and generation are assessed on inverter export power, with G98 fit-and-notify up to 16A per phase and G99 above that.

Nikola Nedoklanov

UK-based solar DIY enthusiast with 5+ years hands-on experience.

About the author

Published: July 16, 2026

Last updated: July 17, 2026