Can you sell plug-in solar electricity back to the grid?
Not in any way that pays. A plug-in kit has no export meter and, according to industry coverage, is not eligible for the Smart Export Guarantee, so any surplus goes to the grid for nothing. Here is what that means for how you use it.
Rules and product details last checked on .
Key takeaways
- You cannot get paid for plug-in solar surplus. A basic kit has no battery, so power your home is not using at that moment flows out to the grid unmetered and unpaid.
- The Smart Export Guarantee does not apply, per UKEM Group’s summary of the rules. We have not read the scheme rules ourselves, so treat that as secondary.
- That makes timing the whole game. The value of a kit is the electricity you use while it is producing, not what it exports.
- The surplus is small. With a fridge, router and standby load running, an 800 W kit at noon is often absorbed. A house empty all day wastes more.
- A battery recovers some of it, at a cost we work through separately.
“Selling back to the grid” is the question people bring from rooftop solar, where export payments are normal. Plug-in solar works differently, and the difference is what this page explains.
Why there is nothing to sell
A rooftop system has an export meter and a supplier contract that pays per kilowatt hour sent out. A plug-in kit has neither. It feeds your home’s wiring through a socket, as we describe in how the kit works, and whatever you are not using at that instant goes out through your meter without being measured as export.
UKEM Group’s April 2026 summary of the new rules states that plug-in solar “cannot access the Smart Export Guarantee”. That matches what the industry guidance implies, but it is a trade summary, not the scheme document, and we have not verified it against the scheme rules.
What that changes
If surplus earns nothing, the sensible use is to take as much as possible yourself while the sun is up. The practical version:
- Run flexible loads at midday: dishwasher, washing machine, charging.
- Match placement to your hours. A panel that peaks in the afternoon is wasted on a home empty until evening; our placement guide shows the difference in kilowatt hours.
- Do not oversize. More panels than you can use just export more for free.
How much you actually waste
We cannot give you one number, and would distrust a page that did. It depends on your base load, your hours at home, and the season. What we can say from our modelling is the size of the prize: 500 to 830 kWh a year from an 800 W kit, city by city. Every kilowatt hour you use directly is one you did not buy.
What we have verified, and what we have not
Verified. That a kit has no export metering or payment mechanism is consistent with the statutory definition and specification we quote in our legality guide; the output figures come from our own published model.
Secondary, not verified. The statement that the Smart Export Guarantee is unavailable, taken from UKEM Group’s summary.
Not verified. How much of your output would be exported in your home.
Our editorial policy explains how we handle claims we cannot check.
If you have read the Smart Export Guarantee scheme rules and they say something different, tell us and we will update this page.