Can You Get Paid for Plug-in Solar Exports? SEG Tariffs Explained

One of the most common misconceptions about plug-in solar: you'll get paid for electricity you export to the grid. The reality is more nuanced — and for most plug-in solar owners, the answer is currently no.

What Is the Smart Export Guarantee?

The Smart Export Guarantee (SEG) is a UK government scheme requiring large energy suppliers to offer a tariff for electricity you export to the grid from renewable generation. If you have solar panels generating more than you use, the surplus goes to the grid and your supplier pays you for it.

Current SEG rates range from 3p to 25p per kWh depending on your supplier and tariff. The average is around 13p/kWh. At the top end, Good Energy's Solar Savings Exclusive tariff pays 25p/kWh for exports.

Sounds great. But here's the catch.

Why Most Plug-in Solar Owners Can't Access SEG

To register for SEG, you need an MCS (Microgeneration Certification Scheme) certificate. MCS certification requires your system to be installed by an MCS-accredited installer — a qualified professional, not a DIY installation.

Plug-in solar is designed for self-installation. That's the whole point. But self-installation means no MCS certificate, which means no SEG access.

This isn't a bug — it's how the current regulatory framework works. SEG was designed for professionally installed rooftop systems, not plug-and-play kits. The government may update this, but as of April 2026, it hasn't.

The Octopus Exception

Octopus Energy is the notable exception. They accept some non-MCS systems for their export tariffs, including Octopus Outgoing (their SEG equivalent). If you're an Octopus customer, it's worth checking whether your plug-in system qualifies.

However, this is one supplier's policy, not a market-wide guarantee. It could change, and it doesn't apply to the 80%+ of UK households on other suppliers.

What This Means for Your Savings

Without export payments, any electricity your plug-in solar generates that you don't use at that moment is essentially given away for free. It goes to the grid, your neighbours benefit, and you get nothing for it.

This doesn't mean plug-in solar isn't worth it — it absolutely is. But it means your savings come entirely from self-consumption: using the solar electricity yourself instead of buying from the grid.

The maths:

Every kWh you generate and use yourself saves you ~27p (the current grid import rate). Every kWh you export and don't get paid for saves you nothing.

So the key to maximising plug-in solar value isn't generating more — it's using more of what you generate.

How to Maximise Self-Consumption

Run appliances during the day. Dishwashers, washing machines, and tumble dryers are high-draw, flexible loads. Run them when the sun is out and your solar is generating.

Use a smart plug to monitor generation. A TP-Link Tapo P110 between your inverter and wall socket shows real-time output. When you see 400W+ being generated, that's the signal to run a load.

Consider a battery. A portable power station like the EcoFlow DELTA 2 stores surplus daytime generation for evening use. Instead of exporting for free, you bank it and use it when the sun goes down. This is the single most effective way to increase self-consumption from ~30-40% to ~70-80%.

Use a whole-home energy monitor. The Emporia Vue 3 shows your total home consumption alongside solar generation. When generation exceeds consumption, you know you're exporting — time to turn something on or charge the battery.

Will This Change?

Probably, eventually. The government's March 2026 announcement focused on making plug-in solar legal and accessible. Export payments for self-installed systems weren't addressed, but there's political pressure to extend SEG access.

In Germany, plug-in solar owners can register for feed-in tariffs (their equivalent of SEG). The UK may follow the same path — especially as installed volumes grow and the regulatory framework matures.

For now, plan your finances around self-consumption only. If SEG access comes later, treat it as a bonus.

Which Tariffs Work Best With Plug-in Solar?

Even without SEG, your energy tariff matters. Time-of-use tariffs can amplify plug-in solar savings:

Octopus Agile offers half-hourly variable pricing. Solar generation during high-price daytime periods displaces expensive grid electricity. If you also have a battery, you can charge overnight at low rates (7-12p/kWh) and use stored energy during peak periods (24-34p/kWh).

Octopus Go gives you a guaranteed 7p/kWh overnight rate for 6 hours. Pair this with solar during the day and a battery, and you're buying grid electricity at less than a third of the standard rate.

Economy 7 still exists and offers cheap overnight rates. The spread between off-peak and peak rates makes battery arbitrage viable alongside solar.

For a deeper dive into battery + tariff strategies, see our Octopus Agile guide.

The Bottom Line

Plug-in solar saves you money through self-consumption — using the electricity yourself instead of buying it from the grid. Export payments via SEG are currently not accessible for most self-installed systems.

Don't let this put you off. A well-optimised 800W system with decent self-consumption still saves £120–180/year without any export income. Adding a battery pushes self-consumption higher and saves even more.

The economics work. They just work differently from what some marketing suggests.

For realistic savings calculations based on your postcode, use our savings calculator. For the complete setup guide, see our starter kit checklist.