Cost guide
How much do solar panels cost in the UK?
A plain-English guide to what UK homeowners typically pay for solar panels — and how to spot a quote that genuinely reflects your home.
Typical solar panel costs
A typical UK domestic solar system costs around £6,000–£10,000 installed. This usually covers panels, an inverter, mounting, electrical work, paperwork, and a basic monitoring setup.
Smaller systems for flats or bungalows can come in cheaper; larger systems with premium panels, micro-inverters, or batteries can be significantly more. These figures are illustrative — your written quote is what counts.
£6–10k
Typical installed system
5–7 yrs
Common payback range
25+ yrs
Panel performance warranty
0% VAT
On most domestic installs
What affects the price
Six common factors that move the headline cost up or down.
System size
A 4 kWp system is cheaper than a 10 kWp system, but bigger systems are often better value per kilowatt installed.
Panel and inverter brand
Premium panels and micro-inverters add cost — sometimes meaningfully more output, sometimes just a longer warranty.
Roof type and access
Slate, multi-pitched, or hard-to-access roofs need more labour. Scaffolding is usually included.
Electrical work
Fuse-board upgrades, cable runs, or G99 applications add cost in some homes.
Battery storage
Adding a battery typically adds £3,000–£8,000 depending on size and brand. See our battery cost guide.
Region and supply
Local installer availability, demand, and travel can move prices a few hundred pounds in either direction.
Solar only vs solar + battery
Adding a battery costs more upfront but can shorten payback if your usage suits it.
| Option | Typical installed cost | Best for |
|---|---|---|
| Solar only | £6–10k | Lower upfront cost; daytime usage homes |
| Solar + small battery | £9–14k | Most UK homes — balances upfront cost and self-consumption |
| Solar + larger battery | £12–18k | High evening usage, EV owners, or backup-focused households |
Payback period
Most UK domestic solar systems pay back in 5–10 years. Well-sized systems on homes with daytime usage typically land at the lower end of that range.
Adding a battery usually extends payback slightly in pure financial terms but improves the long-term return because you keep more of what your panels generate.
- Use the daytime — faster payback
- South, east, or west-facing roof
- Limited shading throughout the day
- Smart tariff that rewards self-consumption
- Plans to stay in the home long term
How to compare quotes
A clear quote should let you compare like-for-like across installers. Look for these line items.
Equipment, named
Exact panel make/model, inverter, battery (if any), and mounting kit — not "premium panels".
All labour and access
Scaffolding, electrical work, fuse-board upgrades, and commissioning included in the headline price.
Warranty terms in writing
Length and scope of product, performance, and workmanship cover — including any insurance-backed guarantee.
MCS & certifications
If MCS applies, the installing company is listed with their MCS number and the relevant consumer code.
Expected generation
A realistic kWh-per-year figure for your roof, not just system size in kWp.
Payment schedule
When deposits are due, what milestones trigger further payments, and what happens if you cancel.
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