Last Updated on June 3, 2025
As demand for renewable energy rises and electricity bills continue to soar, more UK homeowners, landlords, and commercial property owners are investing in solar power. Choosing a solar installer can feel overwhelming, especially with so many solar companies claiming to be the best.
This guide will walk you through how to choose a solar panel installer in 2025 and ensure you’re working with a trustworthy, experienced professional who delivers high-quality results.
Contents
- 1 How to Choose a Solar Panel Installer: A Quick Checklist
- 2 How to Choose a Solar Panel Installation Company: 7 Expert Tips
- 3 4. Read Reviews and Check Local Projects
- 4 5. Compare Quotes — But Don’t Focus Only on Price
- 5 6. Understand Planning Permission and Installation Requirements
- 6 What to Avoid When Choosing a Solar Company
- 7 Going Green in 2025: Why It’s Worth It
- 8 Request a Free Solar Installation Quote from Eco Happy Today
- 9 FAQs
- 10 Our Verdict
How to Choose a Solar Panel Installer: A Quick Checklist
Here’s a simple checklist to help you evaluate solar companies before committing to an installation:
| MCS Certified | The installer must be accredited by the Microgeneration Certification Scheme to ensure compliance with UK standards and eligibility for grants. |
| RECC & TrustMark Member | Look for membership with the Renewable Energy Consumer Code and TrustMark for added protection and accountability. |
| Provides a Detailed, Transparent Quote | Ensure the quote includes panel models, inverter type, labour costs, scaffolding, warranties, and VAT. |
| Offers Product & Workmanship Warranties | A good installer will offer at least 10–25 years product warranty and 5–10 years workmanship guarantee. |
| Uses Tier 1 Solar Equipment | Ensure the installer sources panels and inverters from reputable manufacturers (e.g., JA Solar, Q Cells, SolarEdge). |
| Conducts a Site Survey or Virtual Assessment | Your property’s roof angle, shading, orientation, and load capacity should be thoroughly assessed. |
| Advises on System Sizing | The installer should guide you on how many solar panels you need based on your energy consumption and future needs. |
| Explains Planning Permission Requirements | Especially important for listed buildings or commercial properties. |
| Manages DNO and Grid Connection Applications | A trustworthy solar company will handle all technical paperwork for grid approval. |
| Provides Aftercare & Support | Ensure there’s a plan for system monitoring, performance checks, and support post-installation. |
| Demonstrates Local Experience | Bonus points if they have completed projects in your area and can show reviews or case studies. |
| Offers Guidance on Solar Incentives | Your installer should help you understand grants for solar panels and the Smart Export Guarantee (SEG). |
How to Choose a Solar Panel Installation Company: 7 Expert Tips
If you’re wondering how to choose a solar company you can trust, it’s essential to evaluate their credentials, track record, and understanding of UK-specific installation requirements.
The tips below are tailored for anyone considering a solar photovoltaic installer for residential or commercial properties across the UK. Use these expert insights to make a confident and informed decision.
1. Understand What Makes a Good Solar Installer
Before signing a contract or requesting quotes, it’s crucial to know what sets a quality solar photovoltaic installer apart from the rest. A reliable installer should have the right accreditations, proven customer satisfaction, experience with your property type, and offer a competitive but realistic price.
If you’re currently researching how to choose a solar installer, look for transparency, track record, and the use of top-tier solar panels and components.
2. Check for MCS Certification and Accreditation
In the UK, the Microgeneration Certification Scheme (MCS) is a non-negotiable standard. If your installer isn’t MCS certified, your installation might not qualify for government incentives or energy export schemes.
Key accreditations to look for:
- MCS Certification (for both installer and products)
- RECC (Renewable Energy Consumer Code) membership
- TrustMark accreditation
These ensure your solar panel installer complies with UK regulations and high installation standards. If you’re also exploring grants for solar panels, MCS certification is essential to access these funds.
3. Ask the Right Questions Before You Commit
Don’t just choose the cheapest quote. Instead, ask questions to understand the value behind each proposal. What brands of solar panels are being offered? Do they handle grid connection and DNO applications? Will they assess your roof orientation and shading? Our detailed guide on questions to ask your solar installer can help you dig deeper.
4. Read Reviews and Check Local Projects
Choosing a solar installer means trusting them with your property and investment. So, it’s smart to research reviews across Trustpilot, Google, and even social media. See if the company has completed installations in your local area or for similar building types.
Extra tip: Ask if you can speak to a recent customer or see photos of previous work. Reputable solar companies are happy to showcase their work and testimonials.
5. Compare Quotes — But Don’t Focus Only on Price
While cost is important, cheaper doesn’t mean better. Look beyond price and consider warranty lengths, equipment quality, workmanship guarantees, and ongoing support. Be wary of unusually low quotes, they could signal inferior equipment or poor installation quality.
Check if the installer provides options for different types of solar panels, like monocrystalline vs polycrystalline, or even solar tiles. A knowledgeable company will help you choose the best system for your roof, budget, and energy goals.
6. Understand Planning Permission and Installation Requirements
In most cases, you won’t need planning permission for solar panels on residential properties, but exceptions apply, especially for listed buildings, flats, or commercial sites. Before making any decisions, read our article on do you need planning permission for solar panels to ensure you comply with local regulations.
Your installer should be familiar with planning policies in your area and handle any necessary paperwork or applications. This knowledge is vital when choosing a solar company.
What to Avoid When Choosing a Solar Company
- Pressure sales tactics: Avoid any company that pushes you to sign quickly or offers “limited-time discounts.”
- Lack of aftercare: If they don’t provide after-sales support or system monitoring, it could cost you more in the long run.
- No site survey: Reputable installers will carry out a full site visit or virtual assessment before quoting.
Going Green in 2025: Why It’s Worth It
Solar energy offers multiple benefits, from reduced energy bills and energy independence to helping the UK meet its net zero targets. If you’re passionate about the environment, discover how solar power can reduce your carbon footprint and make your home or rental property more sustainable.
Request a Free Solar Installation Quote from Eco Happy Today
Ready to power your home or property with clean energy? Let Eco Happy make your transition to solar stress-free. Our team of certified experts helps UK homeowners, landlords, and businesses install top-quality solar PV systems designed for long-term savings and reliability.
We offer:
- Tailored solar quotes based on your roof, property, and energy usage
- Full support with grid applications and any necessary permissions
- Trusted advice on choosing the right solar equipment
Don’t delay — request your free solar quote today and take the first step towards greener energy with Eco Happy.
FAQs
What certifications should a UK solar panel installer have?
A common certification for solar panel installers in the UK is the Level 3 Award in the Installation and Maintenance of Small-Scale Solar Photovoltaic Systems. Also, installers should be certified by the Microgeneration Certification Scheme (MCS) to ensure quality service and compliance with safety standards.
How do I check an installer’s reputation?
Take a look at popular online review sites like Trustpilot. Then ask for referrals from friends or family who have installed solar panels. You can also check with local consumer protection agencies to ensure the installer has a good reputation.
What should I look for in a solar panel warranty?
Ensure the warranty covers the panels, inverter, and other components, and that it provides enough support and maintenance. Also, check if the warranty is transferrable and if there are any specific requirements for maintenance or inspections.
Our Verdict
With all the solar panel companies out there, choosing the right one won’t be easy at first. But, by focusing on experience, certifications, and customer reviews, you can better guarantee a successful solar panel installation. Also, remember to go for high-quality solar panels, and when you have them fitted, watch how they’ll lower your energy bills.
James Elston
Boiler Expert
James Elston is the top boiler replacement and heating expert at Eco Happy. He has over 20 years of experience in the industry, focusing on Gas Safe boiler installations and offering home-heating and energy-saving solutions to homeowners across the UK. From sourcing the most energy-efficient combi boiler to providing specialist heating advice, James ensures that Eco Happy maintains the highest standards and best customer service.