How much can plug-in solar panels save you?
29 August 2026 · Savings
The headline numbers
According to GOV.UK, a typical household can save up to £110 a year with plug-in solar, covering around 20% of average household electricity use.
What affects your savings
- Sunlight hours - the south of England gets more sun than Scotland
- Panel size - a 600W-800W kit generates more than a smaller balcony panel
- When you use power - daytime use (working from home, laundry) benefits most
- Electricity price - higher tariffs mean bigger savings per kWh
Realistic expectations
A typical kit costs in the region of £400-£800. With savings of £70-£110 a year, payback typically lands between 4 and 8 years - shorter if you use most of the power yourself and electricity prices stay high.
Don't forget
- You don't need a battery to save money - daytime self-consumption works fine
- A battery adds cost but stores power for evening use
- Prices are still settling as the UK market opens, so compare kits before buying
Want a simpler way to think about it? If your household uses electricity during daylight hours, plug-in solar is very likely to pay for itself well within the life of the panels.