Best Solar Panel Installers UK 2026: Top 10 MCS Certified Companies

Choosing high-quality solar panels is crucial if you’re considering a photovoltaic (PV) system for your home. However, hiring a qualified installation company is equally important. Even the best solar panels can give you trouble if they’re not installed properly, and manufacturers will typically void their warranties if there’s evidence of an incorrect installation.

You should look for a solar installation company that is MCS certified (Microgeneration Certification Scheme) – this is the industry standard for renewable energy installations in the UK and is required to access the Smart Export Guarantee.

• Many companies offer additional products such as battery storage systems and EV chargers, or services such as solar panel cleaning and remote monitoring.
• Having access to finance options is also valuable: you can go solar with manageable monthly payments, and your electricity bill savings can offset the cost over time.
• Look for installers who are familiar with the Smart Export Guarantee (SEG) and can help you register for the best export tariffs available.

In this guide, we review 10 of the best solar panel installers operating in the UK, based on customer reviews, industry reputation, warranty terms, and service quality. All companies listed are MCS certified and have strong track records with verified customer feedback on platforms like Trustpilot, Which? Trusted Traders, and Google Reviews.

Choosing a Solar Installer: Key Recommendations

Your home solar system should have a fair price. According to the Energy Saving Trust and industry data from GreenMatch, you can expect to pay between £1,400 and £1,800 per kW when installing solar panels on a UK home. Higher and lower prices can be expected depending on your location and system specifications, but beware of offers that seem excessively expensive or suspiciously cheap:

• London and the South East typically have higher installation costs due to increased labour rates.
• Scotland, Wales, and Northern England often see slightly lower prices, though this varies by installer.

Any solar quotes that fall significantly outside the expected price range should be questioned. If you receive a very low price such as £3,000 for a 4kW system (£750/kW), ask the provider what’s included – they may be using inferior equipment or excluding essential items like scaffolding. Conversely, if you get a quote of £12,000 for a 4kW system (£3,000/kW), clarify whether this includes premium additions such as battery storage or a hybrid inverter.

The following are some warning signs to watch for when comparing solar companies:

• High-pressure sales tactics: Be wary of companies pushing you to sign immediately without giving you time to compare other quotes. Reputable installers understand this is a significant investment and will give you space to decide.
• No site survey offered: A home solar system can only be designed properly with an assessment of your roof, shading, orientation, and energy usage. If a company provides a quote without surveying your property, the system may be incorrectly sized or poorly designed.
• “Free solar panels” claims: These schemes were more common during the Feed-in Tariff era. Today, they typically mean rent-a-roof arrangements where the company keeps the SEG payments. Owning your own system delivers far better long-term returns.
• Vague equipment specifications: There are many solar panel and inverter manufacturers, and quality varies significantly. If a company won’t specify which brands they’re installing, they may be using budget equipment with shorter lifespans and weaker warranties.
• No MCS certification: Always verify that your chosen installer is MCS certified. Without this, you won’t be eligible for SEG payments, and the installation may not meet required safety standards.

In the following sections, we compare 10 of the best solar panel installers operating across the UK. We discuss their products and services, coverage areas, and the pros and cons from an objective standpoint.

1) Octopus Energy Services

Octopus Energy has rapidly become one of the UK’s most trusted energy companies, and their installation arm – Octopus Energy Services – brings that reputation to solar. A major advantage is seamless integration with Octopus’s innovative energy tariffs, including time-of-use rates that can maximise the value of your solar and battery system.

Octopus installs high-quality panels from leading manufacturers and offers battery storage options including the Tesla Powerwall. Their pricing is competitive and transparent, with no hidden costs. The company has invested heavily in customer service, reflected in their exceptional Trustpilot ratings.

One standout feature is their Intelligent Octopus tariff, which works with compatible batteries to automatically charge during cheap overnight periods and discharge during peak times – maximising savings beyond just solar generation.

2) Egg (formerly Evergreen Energy)

Egg (formerly Evergreen Energy) has built an outstanding reputation over 15+ years in the renewable energy sector. They consistently rank among the highest-rated solar installers on Trustpilot, with customers praising their professionalism, communication, and installation quality.

The company offers a comprehensive range of renewable energy solutions, making them ideal for homeowners planning a broader decarbonisation journey. Their 0% finance options make solar accessible without large upfront costs, and they work with premium equipment brands including SunPower, LG, and GivEnergy batteries.

Egg’s nationwide coverage and strong aftercare support make them a reliable choice regardless of where you’re located in Great Britain.

3) GreenMatch Network Installers

GreenMatch operates differently from traditional installers – they’re a comparison platform that connects homeowners with vetted, MCS-certified solar installers in their area. This approach lets you receive multiple quotes quickly, making it easier to compare prices and find the best deal.

All installers in the GreenMatch network are pre-screened for quality and certification. The platform is free for homeowners to use, with installers paying for leads. This competitive environment often results in keen pricing.

The main advantage is convenience – submit one enquiry and receive up to three quotes from local installers. The downside is that quality can vary between network members, so it’s still important to research individual companies before committing.

4) Spirit Energy

Spirit Energy has earned one of the highest Trustpilot ratings in the UK solar industry, with customers consistently praising their attention to detail and customer care. Based in the Midlands, they’ve expanded coverage across much of England.

The company offers a thoughtful approach to system design, taking time to understand each customer’s energy usage patterns and future plans (such as EV purchases or heat pump installations). This ensures systems are appropriately sized rather than over-sold.

Spirit Energy works with quality equipment brands and provides comprehensive aftercare. Their regional focus allows them to maintain high service standards, though it does mean limited availability for homeowners in Scotland, Wales, or Northern England.

5) Effective Home

Effective Home stands out for their impressive 15-year workmanship warranty – longer than most competitors offer. This demonstrates confidence in their installation quality and provides extended peace of mind for homeowners.

The company takes a whole-house approach to energy efficiency, offering heat pumps, EV chargers, and solar thermal alongside photovoltaic systems. This makes them particularly suitable for homeowners planning comprehensive energy upgrades.

Their flexible finance options, including 0% deals on selected packages, help make solar accessible. Customer reviews highlight their helpful sales team (without being pushy) and professional installation crews.

6) Project Solar UK

Project Solar UK has grown rapidly by focusing on competitive pricing without compromising on quality. They’re particularly known for their GivEnergy battery installations, often offering attractive package deals combining solar panels with battery storage.

The company provides transparent, fixed-price quotes with no hidden extras. Their online quote tool gives instant estimates, though a site survey is still conducted before final pricing is confirmed.

Project Solar’s nationwide coverage and efficient operations make them a strong choice for homeowners seeking value. Customer reviews frequently mention smooth installations and helpful communication throughout the process.

7) Sunstore Solar

Sunstore is one of the UK’s longest-established solar companies, with over 25 years of experience in the industry. Originally focused on the South West, they’ve expanded their reach whilst maintaining the expertise that comes with decades of installations.

Uniquely, Sunstore offers both full installation services and DIY solar panel kits for those confident in self-installation. They also have significant experience with off-grid systems, making them a go-to choice for remote properties or those seeking complete energy independence.

Their commercial solar division means they understand large-scale projects, and this expertise feeds into their residential installations. The company’s longevity provides reassurance that they’ll be around to honour warranties.

8) Deege Solar

Deege Solar has earned exceptional customer ratings by focusing on quality over quantity. Based in the South East, they’ve built a reputation for meticulous installations and outstanding customer service.

The company offers solar carport installations alongside traditional roof-mounted systems – an attractive option for properties with limited suitable roof space or those wanting covered parking with integrated charging.

Deege uses premium equipment brands and takes a consultative approach to system design. Their regional focus in the South East and London means they understand local planning requirements and DNO processes thoroughly. The trade-off is limited availability for homeowners elsewhere in the UK.

9) E.ON Solar

E.ON brings the resources and stability of a major energy company to residential solar installation. For homeowners who value working with an established, well-capitalised provider, E.ON offers reassurance that they’ll be around for the long term.

The company offers end-to-end energy solutions, from solar panels and batteries to heat pumps and EV charging. This integrated approach can be advantageous for those planning multiple upgrades, with potential for package deals and simplified billing.

E.ON’s pricing tends to be mid-range to premium, reflecting their overhead as a large organisation. Customer experiences can vary given their scale, but their nationwide coverage and financial stability are genuine advantages.

10) Eco2Solar

Eco2Solar has established a strong presence across the Midlands and Northern England over 15+ years in the industry. They handle both residential and commercial installations, bringing professional-grade expertise to home solar projects.

The company emphasises quality equipment and proper system design. They work with leading panel brands and offer battery storage from manufacturers including GivEnergy and Tesla.

Eco2Solar’s regional focus allows them to provide responsive local service. Customer reviews highlight their knowledgeable surveyors and tidy installation teams. They’re a particularly good choice for homeowners in the Midlands and North seeking a well-established local installer.

How to Choose the Best Solar Panel Installer for Your Home

With numerous installers to choose from, here’s a checklist to help you make the right decision:

1. Verify MCS certification: Check the installer is listed on the MCS database. This is non-negotiable for SEG eligibility and quality assurance.
2. Get at least three quotes: Prices vary significantly between installers. Comparing quotes helps you understand fair market pricing and identify outliers.
3. Check reviews on multiple platforms: Look at Trustpilot, Google Reviews, Which? Trusted Traders, and the company’s own testimonials. Patterns across platforms are more reliable than any single source.
4. Ask about equipment brands: Understand exactly which panels, inverters, and batteries are included. Research these brands independently to verify quality.
5. Understand warranty terms: Clarify what’s covered under workmanship warranty versus manufacturer warranty. Know who to contact for different types of issues.
6. Confirm what’s included: Ensure quotes include scaffolding, DNO notification, all electrical work, and system commissioning. Hidden extras can significantly inflate costs.
7. Assess communication quality: How responsive is the company during the sales process? This often indicates the level of aftercare you’ll receive.
8. Consider company longevity: Longer-established companies provide more confidence that they’ll be around to honour warranties. However, newer companies can also be excellent – just research them thoroughly.

Best Solar Panel Installers: Comparing Their Strongest Points

The solar installation companies reviewed in this guide each have distinct strengths. The following table summarises what makes each one stand out:

What to Expect From Your Solar Installation

Once you’ve chosen your installer, here’s the typical process you can expect:

1. Site survey: A surveyor visits your property to assess roof suitability, shading, orientation, and structural condition. This typically takes 1-2 hours.
2. System design and quote: Based on the survey, you’ll receive a detailed proposal including system size, expected generation, equipment specifications, and final pricing.
3. DNO notification: Your installer notifies your Distribution Network Operator about the planned installation. For systems under 3.68kW (single phase), this is usually a simple notification.
4. Installation day(s): Most residential installations take 1-3 days. Scaffolding is usually erected the day before or morning of installation.
5. Commissioning and handover: The system is tested, and you’re shown how to monitor its performance. You’ll receive MCS certification documents.
6. SEG registration: Your installer should help you register for the Smart Export Guarantee with your chosen supplier.

The entire process from initial enquiry to energised system typically takes 4-8 weeks, depending on installer availability and DNO response times.

Frequently Asked Questions

How do I find MCS-certified solar installers near me?

Use the official MCS Certified installer search to find accredited companies in your area. You can also use comparison platforms like GreenMatch to receive quotes from multiple vetted installers.

What questions should I ask solar installers?

Key questions include: What brands of panels and inverters do you use? What’s included in your workmanship warranty? Does the quote include scaffolding and all electrical work? Can you provide references from recent installations? How long have you been MCS certified?

Should I choose a local or national solar installer?

Both can be excellent choices. Local installers often provide more personalised service and may offer better aftercare response times. National companies may have more competitive pricing due to scale. The most important factors are MCS certification, customer reviews, and warranty terms.

How many solar quotes should I get?

We recommend getting at least three quotes from different MCS-certified installers. This gives you a good understanding of fair market pricing and allows you to compare equipment specifications, warranty terms, and customer service quality.

Conclusion: Finding the Right Solar Installer for You

Choosing the best solar panel installer is just as important as selecting quality equipment. A poorly installed system can underperform, develop faults, and leave you without warranty coverage. By selecting an MCS-certified installer with strong customer reviews and transparent pricing, you’ll ensure your solar investment delivers decades of reliable, clean energy.

Take your time comparing options, ask plenty of questions, and don’t be swayed by high-pressure sales tactics. The right installer will give you confidence in your decision and provide excellent aftercare throughout your system’s long lifespan.