If you’re considering solar panels for your home, one of the first questions you’re likely to ask is: are solar panels actually worth it in the UK?
The answer depends on your home, your electricity use, the size and position of your roof, the cost of installation and how much of the electricity you can use yourself.
However, solar has become a much more established option for UK homeowners. There are now nearly 1.7 million solar installations on homes across the UK, while 2025 was the strongest year on record for UK solar deployment, with 269,000 new installations completed during the year.
So, while solar panels aren’t automatically the right choice for every property, they can make financial and practical sense for many UK households.
How much do solar panels cost in the UK?
The cost of a solar installation depends on the size of the system, your roof, the equipment you choose and the complexity of the installation.
According to the Energy Saving Trust, a typical domestic solar panel system of around 4.5 kWp costs approximately £7,600 to install.
kWp stands for kilowatt peak. It describes the maximum power a solar panel system is designed to produce under standard test conditions.
You don’t need to understand the technical details to compare systems. In simple terms, a higher kWp system generally means more potential electricity generation, assuming the roof and conditions are suitable.
The final installation price can be affected by:
- The number of panels required
- The size of the system
- The type and condition of your roof
- Roof access
- Scaffolding requirements
- The type of inverter
- Battery storage
- The complexity of the electrical installation
- The installer you choose
The Energy Saving Trust recommends getting multiple quotes and using an appropriately certified installer when considering a rooftop system.
How much can solar panels save you?
Solar panels generate electricity from sunlight, allowing you to use some of that electricity in your home rather than buying it from your energy supplier.
The amount you can save depends heavily on how you use electricity.
For example, a household that uses a lot of electricity during daylight hours may be able to use a greater proportion of its solar generation directly.
You can also receive payment for electricity you export to the grid through the Smart Export Guarantee (SEG), where eligible suppliers offer export tariffs.
The Energy Saving Trust currently estimates that a typical solar installation can have a payback period of roughly 9–12 years, depending on location and household circumstances.
Payback period simply means the amount of time it takes for the financial savings and export income from the system to broadly recover the original installation cost.
For example, if a system costs £7,600 and the combined annual financial benefit averages £760, the simple payback would be around 10 years.
Actual results can be significantly different because electricity consumption, export payments, sunlight and energy prices vary from household to household.
Do solar panels work in the UK when it is cloudy?
Yes.
One of the common misconceptions about solar panels is that they only work when the sun is shining brightly.
Solar panels generate electricity from daylight, so they can still produce electricity on cloudy days. They will generally generate more electricity in direct sunlight, but the UK’s relatively cloudy climate does not prevent solar panels from working.
This is one reason solar has become increasingly viable across the UK.
The amount of electricity generated will depend on factors such as:
- Roof orientation
- Roof angle
- Shading from trees or buildings
- Location
- Weather
- Time of year
- Panel efficiency
- System size
Is solar power growing in the UK?
Yes, and the growth has been substantial.
Government figures show that 269,000 solar installations were completed across the UK during 2025, the highest annual total recorded. The government also reported that the UK passed 2 million total solar installations in March 2026, counting both rooftop and other installations.
The UK’s total solar capacity is measured in gigawatts (GW).
This can sound complicated, but the basic idea is straightforward.
- 1 kilowatt (kW) = 1,000 watts
- 1 megawatt (MW) = 1 million watts
- 1 gigawatt (GW) = 1 billion watts
So when you hear that the UK has tens of gigawatts of solar capacity, it means the country has a very large amount of solar-generating equipment installed across millions of panels and larger solar sites.
It does not mean the panels produce that amount of electricity every hour. Solar output changes depending on sunlight and weather.
How much electricity does UK solar actually produce?
This is another useful distinction.
Solar capacity tells us how much electricity the installed equipment can potentially produce at a given point.
Solar generation tells us how much electricity it actually produces over a period.
According to the UK Government’s Energy Trends statistics, solar generation reached a record 20 terawatt-hours (TWh) in 2025, representing 6.9% of UK electricity generation.
A TWh, or terawatt-hour, is simply a very large unit used to measure electricity generated or consumed over time.
For a homeowner, you don’t need to worry about the difference between GW and TWh when deciding whether solar is suitable. The important point is that solar is now producing a significant amount of the UK’s electricity and has become a mainstream domestic technology.
What are the main benefits of solar panels?
There are several potential benefits to installing solar panels.
1. Lower electricity bills
Generating your own electricity means you can buy less electricity from the grid.
The more of your solar electricity you use directly, the greater the potential benefit.
2. Income from excess electricity
If your panels produce more electricity than your household needs, you may be able to export the surplus to the grid and receive payments through the Smart Export Guarantee.
3. Reduced carbon emissions
Solar electricity is renewable and does not require fossil fuels to generate electricity at the point of use.
The Energy Saving Trust estimates that a typical UK home solar system could save around one tonne of carbon emissions per year, depending on circumstances.
4. Greater use of your own energy
Solar can become particularly useful when combined with technologies such as battery storage, an electric vehicle or a heat pump.
A battery can store some of the electricity generated during the day and make it available later, when your solar panels aren’t producing as much.
However, a battery adds to the initial cost, so homeowners should consider whether the additional investment makes financial sense for their particular circumstances.
What are the disadvantages of solar panels?
Solar isn’t perfect for every property.
The main considerations are the upfront cost and the fact that electricity generation varies throughout the year.
You may also have a less suitable roof because of:
- Heavy shading
- Poor orientation
- Limited roof space
- Structural issues
- Difficult access
- Roofs that need replacing soon
Solar panels also require a long-term view.
If you’re expecting the entire installation to pay for itself within just a few years, you may be disappointed. Current Energy Saving Trust estimates suggest that payback can take around 9–12 years, depending on location and circumstances.
For many homeowners, the more relevant question is whether the system can generate useful savings over its expected working life.
Are solar panels worth it if you live in the UK?
For many homes, solar panels can be a worthwhile long-term investment, but there is no universal answer.
The economics are generally more attractive when:
- Your roof receives plenty of daylight
- There is limited shading
- You use a reasonable amount of electricity
- You can use a significant proportion of your solar generation
- You can access a suitable export tariff
- You expect to remain in the property for several years
- The installation is competitively priced
The Energy Saving Trust’s solar calculator can provide an estimate based on your property, location and energy use.
This is more useful than relying on a generic statement such as “solar panels will save you £X per year”, because every property is different.
What about the new plug-in solar panels?
There is now another option for some UK households.
Since 27 August 2026, compliant plug-in solar panels have been available in Great Britain. These systems can produce up to 800 watts (W) and connect to a domestic electrical socket.
For context, 800 watts is 0.8 kilowatts, making these systems considerably smaller than a typical rooftop solar installation.
The Energy Saving Trust estimates that plug-in solar could save around £70–£100 per year, depending on how much electricity the household can use while the panels are generating.
They can therefore be an option for people who cannot install conventional rooftop solar or who want a lower-cost way of generating some of their own electricity.
However, they produce considerably less electricity than a full rooftop solar system.
Once you install solar panels, you need to look after them
The decision to install solar panels shouldn’t end once the panels are on your roof.
A solar installation is a long-term investment, so protecting and maintaining it matters.
This includes keeping an eye on the condition of the panels, the roof area around them and the equipment associated with the system.
One issue that homeowners don’t always consider before installation is birds nesting underneath solar panels.
Why do birds nest under solar panels?
Solar panels are normally installed slightly above the roof, leaving a gap underneath them.
Unfortunately, this sheltered space can be attractive to pigeons and other birds looking for somewhere to nest.
The space underneath solar panels can provide protection from weather and predators while remaining difficult for homeowners to access.
Once birds establish a nesting site, they can repeatedly return to it.
This can result in:
- Bird droppings around the panels
- Nesting material underneath the panels
- Feathers and debris
- Persistent bird noise
- Birds repeatedly entering the same area
- Potential damage to or interference with cables
- Debris entering gutters
- Additional maintenance problems
Not every solar installation will experience these issues, but homeowners with accessible gaps underneath their panels should be aware of the possibility.
Does bird proofing solar panels make sense?
If you’re spending thousands of pounds installing solar panels, protecting the installation from avoidable problems is worth considering.
Solar panel bird proofing involves installing a physical barrier around the edges of the panels to prevent birds from getting underneath them.
A professional system typically uses specially designed mesh secured around the perimeter of the solar installation.
The aim is straightforward:
Allow your solar panels to continue generating electricity while preventing birds from turning the space underneath them into a nesting site.
For a new solar installation, bird proofing can be considered from the beginning.
For an existing installation, bird proofing can usually be added retrospectively, subject to an assessment of the panels, roof and existing bird activity.
What if birds are already nesting under my solar panels?
If you already have pigeons nesting underneath your panels, don’t simply block the access points yourself.
There may be active nests or dependent birds underneath the panels, and the appropriate approach depends on the circumstances.
A professional inspection can establish:
- Where birds are entering
- Whether there is an active nest
- The extent of the problem
- Whether any cables or components have been affected
- How the access points can be protected
- What type of bird-proofing system is appropriate
Once the situation has been dealt with appropriately, a properly installed barrier can help prevent birds from returning.
So, are solar panels worth it in the UK?
For many UK homeowners, solar panels can provide a useful combination of lower electricity bills, renewable energy generation and greater control over household electricity use.
But whether they are worth it financially depends on the individual property.
The strongest approach is to look at the numbers for your own home rather than relying on a national average.
Consider the installation cost, expected electricity generation, your household consumption, export payments and how long you expect to remain in the property.
And if you decide to install solar, remember that the investment doesn’t stop when the panels are fitted.
Protecting the panels from problems such as bird nesting can be part of looking after the installation for the long term.
Already have pigeons under your solar panels?
If you’ve noticed pigeons, nesting material, feathers or bird droppings around your solar panels, Solar Panels Bird Proofing can help.
We provide professional solar panel bird proofing across England and Wales, helping homeowners prevent birds from accessing the sheltered space underneath their panels.
Find out more about solar panel bird proofing →
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