How the Smart Export Guarantee (SEG) Works in 2025/26

How the Smart Export Guarantee (SEG) Works in 2025/26

If you’re researching solar panels, you’ve probably come across the term Smart Export Guarantee — usually shortened to SEG — often with very little explanation attached.

It’s normally mentioned in passing, alongside big claims about savings, and left at that.

But if you’re considering solar panels for your home, understanding how the Smart Export Guarantee works is important. Not because it will suddenly make solar wildly profitable on its own — but because it plays a key role in how your overall system performs and how much value you get from it over time.

So in this guide, we’ll break down:

• What the Smart Export Guarantee actually is

• How solar export works in practice

• How much SEG payments are in 2025/26

• How batteries affect exporting

• And how SEG fits into the bigger picture of solar savings

Read on for clear, practical information, without the usual jargon solar panel installers use.

What Is the Smart Export Guarantee (SEG)?

The Smart Export Guarantee is a UK government-backed scheme that pays homeowners for excess electricity they export back to the grid from renewable systems like solar panels.

It replaced the old Feed-in Tariff (FIT) scheme, which closed to new applicants in 2019.

Unlike FIT, SEG does not pay you simply for generating electricity. Instead, you’re paid only for what you actually export — meaning the electricity your home doesn’t use and sends back to the grid.

The scheme requires licensed energy suppliers to offer an export tariff to eligible customers, but the rates themselves are set by the suppliers, not the government. That’s why SEG payments can vary so much from one tariff to another. Learn more about electricity tariffs for solar homes here. 

In short:

• You generate solar electricity

• You use what you need first

• Anything left over can be exported

• You get paid per kilowatt-hour (kWh) exported

How Does Solar Export Work in Practice?

Here’s what happens day to day in a typical solar home:

Your solar panels generate electricity whenever there’s daylight. That electricity flows into your home first and powers whatever is running at the time — lights, appliances, heating controls, and so on.

If your panels are producing more electricity than your home is using, the excess energy automatically flows back to the grid. You don’t need to flick a switch or manage anything manually.

A smart meter measures how much electricity is exported. That export data is then used by your energy supplier to calculate your SEG payments.

At the end of your billing period, you’re paid for every unit of electricity you’ve sent back to the grid.

It all happens quietly in the background — but the way your system is designed determines how much energy actually ends up being exported.

How Much Do SEG Payments Pay in 2025/26?

This is where expectations need to be realistic.

In 2025/26, most Smart Export Guarantee rates sit somewhere between 3p per kWh and 18p per kWh, depending on the supplier and tariff.

Some tariffs offer:

• A flat export rate

• Higher export rates at certain times of day

• Variable rates linked to wholesale energy prices

As a rough example: If you exported 1,500 kWh of electricity over a year and your SEG rate was 10p per kWh, you’d earn around £150 per year from export payments.

That’s a useful bonus — but it’s important to understand that export payments are lower than the cost of buying electricity from the grid. This is why self-consumption (using your own solar) delivers far bigger savings than exporting everything.

What Do You Need to Get Paid Through SEG?

To qualify for the Smart Export Guarantee, you’ll need:

• A solar panel system installed by an MCS-certified installer

• A smart meter capable of measuring exported electricity

• An export tariff with a licensed UK energy supplier

• Registration completed with your chosen supplier

SEG isn’t automatic — it’s something that needs to be set up properly. Many homeowners assume export payments will just “start happening,” but without the right meter and tariff in place, they won’t.

This is one of those areas where having a knowledgeable installer makes a real difference, as it’s far easier to get everything aligned from day one than to fix it later.

How Batteries Change the Way SEG Works

Battery storage changes how exporting works — sometimes quite dramatically.

Without a battery, any excess electricity your home doesn’t use is exported immediately. With a battery, you have another option: store that energy and use it later instead.

This matters because electricity you use yourself is worth far more than electricity you export. Using stored solar in the evening avoids buying power at peak grid rates.

However, some systems allow you to export electricity from the battery itself, not just from live solar generation. If your setup allows it, this means export can become a strategic decision rather than something that happens automatically.

For example:

• Store excess solar during the day

• Use some in the evening

• Export surplus at times when export rates are highest

Whether this is possible depends on your inverter, battery, and tariff combination — not all systems offer the same level of control.

Is the Smart Export Guarantee Actually Worth It?

On its own? No — SEG is not the main reason to go solar.

But as part of a well-designed system? Absolutely.

The biggest savings from solar come from:

• Using your own electricity instead of buying from the grid

• Reducing your exposure to rising energy prices

• Pairing solar with battery storage and smart tariffs

SEG payments then act as a top-up — especially in the summer months when generation is higher and your home may already be running mostly on solar.

Export income helps shorten the payback period of a system, but it shouldn’t be relied on as the core return.

Common Misconceptions About SEG

There are a few misunderstandings that crop up regularly:

Some people assume SEG will pay for their system — it won’t. Others think exporting electricity is always a bad thing — it isn’t. Export still has value, particularly when your battery is already full or during long summer days.

Another common belief is that you need a massive solar system to benefit. In reality, even modest systems can generate export income over the course of a year.

And finally, many people think export can’t be controlled at all. In some systems that’s true — in others, there’s more flexibility than you might expect.

How JD Allen Helps Homeowners Maximise SEG Value

Rather than designing systems purely around export figures, we focus on how energy is actually used in the home.

That means:

• Prioritising self-consumption first

• Designing systems that work well with batteries and smart tariffs

• Ensuring installations are SEG-ready from day one

• Giving honest advice on when exporting makes sense — and when it doesn’t

Every home is different, and export should complement your system, not dictate it.

For homeowners across South London — including Bromley, Beckenham and the surrounding areas — this tailored approach ensures solar works in the real world, not just on paper.

If you’d like tailored advice for your property, get in touch with our expert team here. We’ll provide you with  the support you need, plus a free in-person or remote survey of your property.

Final Thoughts: How SEG Fits Into the Bigger Picture

The Smart Export Guarantee is just one piece of the solar puzzle.

It won’t transform your finances overnight — but when combined with the right system size, battery setup, and energy habits, it adds meaningful value over time.

Solar works best when generation, storage, usage and export are all considered together. That’s where real savings come from.

If you’re still researching solar panels and want to understand how everything fits together, we’ve put together plenty of practical guides to help you learn more.

Explore our solar guides and resources below