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Our solar experts have rounded up the best solar panel installers in 2026. In our recently updated shortlist, we chose Solar4Good as the best for customer service, Project Solar as best for long warranties, and Effective Home as the most reliable provider.
Switching to solar energy is a big decision, and choosing a reliable provider is the first step in ensuring your installation is successful.
In this guide, we have rounded up the very best solar panel installers in the UK. Our solar experts have spent hundreds of hours researching customer reviews, industry accreditations and surveyed over 2,000 people* to provide an updated shortlist in September 2026.
Only companies who offer the best solar panels, hold industry accreditations and are backed by years of experience and plenty of satisfied customers are included in this guide, so you can feel confident choosing one of them with your solar panel installation.
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| Solar panel installer | FMB pick | Trustpilot rating | MCS certified | Maximum warranty | Founded |
|---|---|---|---|---|---|
| Solar4Good | Best customer service | 4.8 stars | Yes | 25 years | 2020 |
| Project Solar | Best for long warranties | 4.6 stars | Yes | Lifetime | 2011 |
| Glow Green | Best range of high-efficiency panels | 4.6 stars | Yes | 30 years | 2011 |
| So Energy | Best for speed of installation | 4.5 stars | Yes | 30 years | 2015 |
| UPS Solar | Best range of solar panels | 4.9 stars | Yes | 25 years | 2019 |
| Sunsave | Best solar subscription service | 4.7 stars | Yes | 25 years | 2022 |
A note on Effective Home: the installer was previously featured in our roundup of the best solar panel installers, but has since ceased trading at the end of June 2026.
Although Solar4Good was only founded in 2020, it has quickly built a reputation for efficient, reliable installations, completing around 1,500 projects annually.
Their installers are backed by a friendly customer service team which is often praised in Trustpilot reviews, earning Solar4Good an impressive 4.8 stars on the review site.
Solar4Good offers 3 customisable residential packages, with solar panel prices ranging from £5,500 for 10 panels to over £9,000 for 16 panels and 8.7kWh battery storage. It supplies solar products from JA Solar, Jinko, Trina Solar, Qcells, and Fox ESS.
What Solar4Good customers have to say
As of September 2026, Solar4Good has the second-highest Trustpilot rating of the providers in this guide, at 4.8 stars. The company boasts 92 per cent of 5-star reviews, though it only counts 800 reviews in total. Many positive reviews call out the high quality of after-sales care and customer service, as well as the pricing and speed of installation.
“Good informative phone chat followed by swift quote, so transparent. In all the dealings there was just a sense of exchanging information and being given the facts. All prompt, no sense of selling. I explored 2 other companies and ruled one out for poor communication and as well as ticking the boxes for reviews and quality products also came out slightly cheaper so the quick, no nonsense approach was justified.
The scaffolders came one day, electricians and installers the next, all good guys, no drama. Discreet cable run, good looking panels, intuitive app and a happy wife!
Overall, I would strongly recommend the company, a professional team.”
“Excellent company, excellent experience.
I had a solar panel installation on my dormer flat roof recently and Solar4Good could not have been more helpful or efficient.
From the initial contact, through sales, installation and then commissioning the team were brilliant, I cannot praise them highly enough. Very responsive when I had questions, very accommodating when plans had to change ( my side ) and finally a great product at end of the journey. Highly recommended !”
Project Solar is the largest solar panel installation company in the UK, having installed more than 50,000 solar panels since its inception in 2011, according to its website.
It is particularly well-known for its industry-leading lifetime warranties on its solar panels and installations. The company states that provided it is installed and maintained properly, a defective solar module will be either repaired, replaced or refunded at the company’s discretion during its lifetime. This warranty does not, however, cover the removal of defective panels or shipping of new ones, so make sure to carefully read the T&Cs before you commit.
The installer offers some of the best solar panels on the market, as determined by our experts. Project Solar customers can choose between the brand’s own Project Solar Evolution Max 500W and SunPower panels.
Project Solar comes thoroughly recommended from its existing customers. In our solar panel survey, 97 per cent of respondents with Project Solar panels said they would recommend the brand*. The same number said their panels had met or exceeded expectations when it came to energy production, and 95 per cent of respondents felt their solar panels had met or exceeded their expectations regarding ongoing cost savings.
What Project Solar customers have to say
Project Solar has a Trustpilot rating of 4.6 stars from over 7,300 reviews as of September 2026, with 80 per cent of 5-star ratings. The overwhelming majority of recent reviews are very positive, highlighting the efficiency of the process and the professionalism of its staff. The few negative reviews highlight pushy sales techniques and some issues getting in touch with customer service, but the company replies to them all to address the customers’ problems.
“Very good from start to finish , installation team were very efficient and explanatory about everything that was fitted and how it all worked including the mobile apps . Office team have been brilliant throughout ringing and emailing to make sure everything was running smoothly . Thoroughly recommend project solar to anyone thinking of diving into solar energy.”
“Good pitch from the guy that did the survey. Professionally installed by very efficient installation team as agreed, with scaffolding taken down in due time. Only thing we misunderstood is that I thought I was getting a 27-KWA of battery and agreed on what I would refer to as an expensive quote. Later found out it was a 15-KWA of battery space. Should have had a slightly cheaper wholesale price.”
Founded in 2011, Glow Green initially specialised in energy-efficient boilers before branching out to offer other green home products, including an all-in-one package that encompasses solar panels, battery storage, EV chargers, air conditioning and heat pumps.
The company covers its solar panels with warranties of up to 30 years and offers a 5-year workmanship warranty. Its product range includes solar panels and batteries from Perlight, JA Solar, Tesla Energy and more.
What Glow Green customers have to say
As of September 2026, Glow Green Solar is rated 4.6 stars on Trustpilot from over 1,200 reviews, with 82 per cent of 5-star reviews. Recent reviews are mostly positive, with the occasional negative review calling out last-minute installation delays, and delays getting the paperwork to sell energy back to the grid.
“The installation of my solar and my battery was great. Adam and his team were brilliant.
BUT.
What’s the point of having them if you can’t use them to there full capacity. To sell to the grid you need the completed forms, not a problem. So why do they take so long. According to customer service, they said with a snigger ( it’s very complicated). […].”
“It was generally a great service but their communication is sometimes a bit lacking. My install was held up because I hadn’t been asked a question and no one contacted me to let me know. A heads up about when the scaffolding was going up would have also eased things a bit. Fortunately I work from home so it wasn’t such an issue. Other than that the staff were really good on the phone and the people they used to do the job were really good. I would recommend them to other people looking for a good value installation.”
Founded in 2015, So Energy is an established, MCS-accredited solar panel installer which offers competitive pricing, good warranties and plenty of flexible payment options.
Customers can opt for long-term payment plans between 5 and 25 years which cover the panels and other hardware, installation costs, monitoring, maintenance and repairs from just £75 per month. So Energy also offers 0 per cent finance options over 1 or 2 years.
Where the brand really stands out, however, is in its commitment to speed of installation. From the moment you accept the quote to the solar panels being installed on your roof, So Energy promises a speedy four-week turnaround.
While they’re not industry-leading, So Energy’s warranties are more than enough to guarantee peace of mind. The company even offers a 10-year warranty on batteries and inverters, which is a nice bonus.
What So Energy customers have to say
As of September 2026, So Energy is rated 4.5 stars out of 5 on Trustpilot with 73 per cent of 5-star reviews, but it’s worth noting many of these reviews are about the company as an energy provider rather than as a solar panel installer. Many happy customers call out the high level of customer service from the company’s representatives. Most of the brand’s negative reviews are about its energy tariffs, bills and smart meters, and the company replies to all of them promptly. That said, some recent reviews call out installation delays.
“We opted for SO Energy because we’ve been with them for several years and got good rates!
From getting our quotation through to installation completion everything went to plan.
Jo who arranged our quotes, Sagar who handled our installation, Tomas the surveyor and battery installer and Kevin & Tony who installed our panels in very hot weather only ever treated us with courtesy and professionalism.”
“Well from the moment we applied for the solar and ev charger on the phone with Jordon , to be installed I can honestly say it was a 5 star performance from the electrical engineer Sagar and his wife to the 2 men that put the panels on the roof, they were all so helpful, they all cleaned up after.
Sagar even spent over an hour helping us to download all relevant apps, and showed us how to use them.
They were a credit to So Energy you are very lucky to have such dedicated staff. I have and will recommend So Energy to all friends and family. Thank you”
Founded in 2019, UPS Solar offers panels from a range of solar solar including AIKO, DMEGC, Q CELL, JA Solar, Jinko and Eurener, many of which featured on our best solar panels guide.
Where the installer really stands out is through its transparent pricing; unlike most of its competitors, it clearly lays out the costs of different system sizes and brands so you can get a good idea of the cost of solar panels before you even reach out to get a quote.
The company also provides a 10-year labour warranty and deposit-free installation, so customers only pay after installation. The installation process is supported by the Independent Warranty Association, and the company holds certifications from the Renewable Energy Consumer Code and MCS.
What UPS Solar customers have to say
As of September 2026, UPS Solar has the joint-highest Trustpilot rating at 4.9 stars out of 5, but it is worth noting this is from just under 500 reviews. The vast majority of recent reviews are positive, while rare negative reviews calling out incomplete installations and difficulty receiving after-sales care.
“A couple of glitches with surveyors & installation team being ill. These things happen. The quotation was clear & easy to understand, coms from the office were really good & answered all questions (this is a big investment ). The fitting team were professional, experienced & hard working. Even my neighbours have commented on how good they were. Sophie & Debbie from back office did exactly as they promised, were approachable, helpful & friendly. I would definitely recommend.”
“Good communication, clear , responsive, helpful. A very good experience.
Their electrical installation team, two men, were excellent, efficient, and very thorough, I would recommend them.”
Founded in 2022, Sunsave is the newest solar panel installer on this list, and it’s known for creating the UK’s first solar subscription service.
While other subscription services have appeared since, including from Otovo and Unbound Energy, Sunsave’s still stands out. With Sunsave Plus, you own your panels from the moment your system is installed, without the need to put down a deposit or pay an upfront fee. You then pay for your system monthly, starting at £69, for a maximum of 20 years. If you wish, you can pay off some or all of your system cost at any time, with no penalty.
Sunsave doesn’t just offer a subscription service. With Sunsave Standard, you can buy your panels upfront, with costs starting from £6,700 for a complete solar system with a battery.
Sunsave Plus and Standard both offer 25-year performance and product warranties on your panels, and 10-year warranties for batteries and inverters. And if you’re an existing Octopus Energy customer, installing your panels with Sunsave will give you faster access to the energy provider’s often market-leading Smart Export Guarantee (SEG) tariffs.
What Sunsave customers have to say
As of September 2026, Sunsave is rated 4.7 stars on Trustpilot from just over 400 reviews, with 90 per cent of customers giving the provider 5 stars. Most recent reviews are very positive, praising the installation process from the initial consultation to the final result. Negative reviews are few and far between and mostly mention difficulty getting in touch with the sales team.
“Where do I start. Recommended by a friend. Spoke to Joseph at Sunsave. Confirmed prices but more importantly the savings we could make! It was a no brainier and we signed up. The whole process from start to finish was fantastic. Just as we were promised. Joseph was so professional, knowledgeable and friendly, nothing was too much trouble. I cannot recommend Sunsave highly enough. We are now enjoying watching all our savings”
“Had a great explanation from Andre on how the system would work as well as the payments.
On e we agreed we were handed over to Seth who helped with all our install questions. You will love the app which is easy to use. Cannot wait to see how much energy we can generate in a whole year.”
Alongside the national installers above, you can find a number of regional solar panel installers in your local area. Below are just some highly-rated MCS-accredited regional solar panel installers:
| Region | Regional solar panel installer | Ratings and accreditations | Areas covered |
|---|---|---|---|
| North East | Sustainable Energy Engineering | 4.9-star Google rating | North of England |
| North West | Applegarth Electric | 4.6 stars on Trustpilot | Wirral, Liverpool, Manchester, Cheshire |
| Yorkshire and the Humber | Purelec Energy | 4.8-star Google rating | West Yorkshire, North of England |
| Midlands | Geo Green Power | 4.9 stars on Trustpilot | Based in Nottingham, operates nationwide |
| East of England | Cahill Renewables | 4.0 stars on Trustpilot | Based in Essex, operates nationwide |
| London and the South East | Everyone’s Energy UK | 4.9 stars on Trustpilot | London, Hertfordshire, South East of England |
| South West | Eco NRG | 4.2 stars on Trustpilot | Devon, Cornwall, Somerset |
| Scotland | Solar Specialists Scotland | 5-star Google rating | Based in Paisley, operates in Scotland |
| Wales | Celtic Green Energy | 3.7 stars on Trustpilot | Based in Camarthenshire, operates in Wales |
| Northern Ireland | Solar Power NI | 4.9 stars on Trustpilot | Based in Ballycastle, operates in Northern Ireland |
Whether you choose a national installer or a smaller regional one, the process from getting quotes to installing panels will be fairly similar. You can find a solar panel installer through FMB by:
Find solar panel installers in your area
Looking for solar panel quotes? Just answer a few quick questions to get matched with installers operating in your area.Both local and national solar panel installers come with advantages and drawbacks which you should consider before making your choice.
Once you have found a few different MCS-accredited installers, make a pros and cons list for each one. According to our survey of over 2,000 solar panel owners*, the most important factor to consider is cost, followed by the warranties offered and the installer’s reputation.
One of the primary considerations when comparing solar panel installers is their cost. The best way to know you’re getting a fair price is to collect as many quotes as possible. It may also help you to negotiate with your chosen installer, especially if you have cheaper quotes to back up your haggling.
Hopefully nothing will go wrong with your panels, but in the event that something were to go awry, you’ll want to know that you’re covered. You should compare the lengths of the labour warranty provided by the installer, as well as the product and performance warranties that come with your solar panels of choice.
Most of the best solar companies have been in business for many years; for example, both Evergen and Project Solar have more than 12 years of experience installing solar panels, so these installers might be at the top of your list if this matters to you. Trustpilot is also an invaluable resource to check how customers feel about their service, especially for newer solar panel installers.
Solar panel installers will often have a select number of solar panel brands they work with, so you should do your research at the outset and make sure you’re happy with the power and efficiency of the panels offered by the installer in question. The more powerful and efficient your panels are, the fewer you’ll need to meet your energy needs.
A practical consideration when comparing solar panel installers is how long it’ll be before they can get started on your household. While you might not want to wait months and months for an installation, an installer with a slightly longer wait time because they’re in high demand can be a sign of quality.
Knowing what to avoid is just as important as knowing what to look for when comparing solar panel installers:
According to the official website, the MCS “sets, defines and maintains the Standards for low-carbon energy technology products, contractors and their installations.” Choosing an MCS-certified solar panel installer guarantees a reliable and professional installation. Opting for an MCS-accredited installer is also a requirement if you plan to sell your unused solar energy back to the National Grid via a regulated SEG tariff.
A MCS accreditation isn’t the only certificate to watch out for, however. The following are all signs that your installer provides a high quality service – you should look for evidence of certification or participation on an installers’ website, typically in the form of a badge or logo:
More than half (52.38 per cent) of the people we surveyed said installing their solar system took 1 to 3 months from signing the contract to completion. This timeframe includes a thorough site survey, making up roof plans, the actual installation and the completion of necessary documentation. For larger systems, the process may take slightly longer.
Installing solar panels yourself might seem like a good way to reduce your upfront costs, but it is generally not recommended. Installing a solar system requires technical knowledge as there are many safety risks involved, and you may find that a DIY solar panel system may lack efficiency compared to a professionally-installed one. What’s more, to take advantage of the SEG scheme, your solar panel system must be installed by an MCS-certified installer.
Labour costs are typically included in your solar panel system quote. These costs generally range between £300 and £500 depending on the size and complexity of the installation, as well as the area you live in.
Companies like Project Solar and Glow Green have been top players in the solar industry for many years, meaning they can generally be depended on to provide a reliable service. That said, a smaller, local installer might be just as reliable and provide a more personalised service; however, make sure to check customer reviews on sites like Trustpilot before you commit.
Not every electrician can install solar panels as roof mounting and integrating a system with the National Grid involve specialised skills beyond standard electrical work.
In most cases, planning permission is not required to install solar panels. Certain properties such as listed buildings and those within Conservation Areas do require planning permission to install solar panels, though the Labour Energy Secretary Ed Miliband has proposed schemes to make it easier to install solar panels on such buildings. Always check with your local planning authority if you are unsure.
A product warranty covers the solar panels, including manufacturing defects, while a performance warranty relates to the panel’s efficiency, which naturally degrades over its lifespan. The performance warranty guarantees a certain level of panel efficiency after a specified period, and is often longer than the product warranty. The labour warranty, also known as an installation or workmanship warranty, covers the quality of your system’s installation.
*Survey conducted by the Federation of Master Builders, 2,004 respondents, June 2024.