How much do solar panels cost in the UK?
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Answering ‘How much do solar panels cost in the UK?’ is a tricky one. It’s one of the first questions homeowners have when researching solar, and sometimes it can be what stops someone from going solar at all.
The cost of a system depends on a huge number of factors, which make it different for everyone. You’ve got to look at your roof size, your electricity usage, the solar you choose and even the type of panels you use.
There’s a lot to think about.
The good news is that prices have dropped significantly in the past decade, and modern systems are far more efficient than they used to be. In this article, we’ll break down the realistic costs of going solar in the UK, what affects those prices, and how to avoid any hidden surprises along the way.
Quick price snapshot
Let’s start with a rough overview of what you might expect to pay for a solar installation in the UK today.
| System Type | Size (kW) | Panel Count (approx.) | Typical Cost Range (£) |
| Small system | 2–3 kW | 6–8 panels | £4,000–£7,000 |
| Average family home | 3.5–4.5 kW | 10–12 panels | £8,000–£12,000 |
| Large system | 6 kW+ | 15+ panels | £13,000–£18,000+ |
| Typical 10-panel system | ~4 kW | 10 panels | Around £10,000 |
| Battery storage add-on | – | – | £3,000–£12,000+ |
| Scaffolding (if required) | – | – | £800–£1,500 |
These are broad averages, but they give you a starting point. The exact cost will depend on your roof size, location, and whether you include extras like a battery or EV charger
What actually makes up the cost of solar panels?
Solar panels themselves aren’t crazily expensive – but the full installation involves far more than just the panels. Here’s what goes into the total price.
Solar panels (per-panel cost)
Most modern panels cost between £60 and £220 each, depending on their size and brand. For example, a 350W panel sits at the lower end of the range, while a 650W panel – or a sleek integrated design like Viridian or Solfit – costs more.
Higher wattage panels mean you need fewer panels to achieve the same total output. So while they may cost more individually, they can sometimes make your overall system more space-efficient and visually neat.
Inverters & electronics
The inverter converts the DC power from your panels into usable AC electricity for your home. It’s one of the most important (and expensive) pieces of kit in any solar setup.
A standard string inverter is typically included in most quotes, but more advanced systems use microinverters or hybrid inverters to improve efficiency and handle batteries.
Expect this part of the system to make up around 10–15% of the total cost.
Labour & installation
Installing solar panels safely and correctly takes skill. You’re not just placing panels – you’re designing a system that integrates with your home’s electrics and withstands decades of weather.
Labour typically represents a significant portion of the total price, especially if your roof is complex or access is tricky. A professional, accredited team (like ours at JD Allen Solar) ensures your system meets all MCS and DNO standards.
Scaffolding & access
Scaffolding is often essential to ensure safe working conditions. Depending on the roof height and shape, this can add £800–£1,500 to the project.
If you’re planning roof repairs, cleaning, or other maintenance, it’s worth combining the work to save on repeat scaffolding costs later.
Electrical upgrades & cable runs
Not every home’s electrics are ready for solar straight away.
If your consumer unit (fuse box) is outdated or doesn’t have spare capacity, it may need upgrading. In some cases, this involves fitting RCBOs (Residual Current Breakers with Overcurrent) – smart devices that combine residual current and circuit protection into one compact unit.
RCBOs improve safety and free up space for new circuits – a handy way to future-proof your electrics so you’re not forced to replace your consumer unit later when adding a battery or EV charger.
Batteries, EV chargers & extras
Adding a battery can transform your system – storing excess solar power for use at night or during peak tariff hours.
Battery prices vary widely from £3,000 to £12,000+, depending on capacity and brand (Tesla, GivEnergy, Alpha ESS, etc). Optional extras like EV chargers, bird-proofing, or smart monitoring apps add more cost, but they also increase convenience and savings.
Hidden or commonly missed costs
It’s easy to focus on the big ticket items like panels and batteries, and forget about smaller details that can bump up the total. Here are a few worth budgeting for:
- Scaffolding on multiple roof sections
- Roof tile replacements or minor repairs discovered during installation
- Long cable runs between inverter and consumer unit
- Upgrading the consumer unit (if outdated or full)
- Permit or DNO costs for larger systems
JD Allen tip: combine electrical or roof work wherever possible to save money long-term — and ask your installer to design with future expansion in mind.
Is solar worth it?
While costs vary, the savings potential is still significant.
A typical 10-panel system (~4kW) might cost around £10,000 and could save £900–£1,200 per year on electricity bills, depending on usage and export tariff.
That means most systems pay for themselves within 8–12 years – often sooner if you add battery storage or use smart time-of-use tariffs to charge overnight and discharge during peak rates.
Solar panels last 25 years or more, inverters around 10–15 years, and batteries typically carry 5–10 year warranties. So once paid off, the long-term value and independence from rising energy costs make solar a strong investment for many households.
Ways to reduce the cost
There are a few smart ways to keep your installation costs in check:
Combine roof or electrical work while scaffolding is up
Choose higher-efficiency panels to reduce panel count
Start with panels only, and add a battery later when budget allows
Ask for detailed quotes that break down materials, labour, and extras
Explore financing or energy company tariff schemes that reduce upfront cost
How JD Allen prices a job
Every home is different – which is why we don’t do “one-size-fits-all” quotes.
We start with a free on-site survey, assessing your roof space, direction, shading, and electrics. Then we design a system that balances cost, performance, and future-proofing – giving you a line-by-line breakdown so you know exactly what you’re paying for.
Looking for a clear, no-obligation quote? Get in touch with our team right here.
Final thoughts
The cost of solar panels in the UK varies – but knowing what drives those prices helps you make smarter decisions.
Panels themselves might cost as little as £60 each, but installation, electrics, and access are what make up the true figure.
At JD Allen, our advice is simple: plan ahead, get transparent quotes, and think long-term. A well-designed system will pay for itself many times over through energy savings and peace of mind.
If you’re thinking about going solar but want to learn more first, check out our other articles below for more helpful guides and real examples from our customers.
JD Allen Solar
Deren Tumkaya founded JD Allen Solar in 2019. Frustrated by the impersonal, sales-driven tactics of large firms, he set out to build a company with a strong ethical foundation that puts personal service and local expertise first.
