Best Solar Companies UK

Finding the Best Solar Companies for UK Homeowners in 2025

Thinking about installing solar panels for your home? You’re not alone. With energy prices staying high and sustainability becoming part of everyday life, more UK homeowners are turning to solar power to cut electricity costs and gain independence from the grid.

But with so many options out there, how do you know which are the best solar companies in the UK? That’s exactly what this guide will help you figure out.

I live semi off-grid myself and rely on solar energy to keep my home running efficiently. My setup isn’t massive — just a modest solar array and a battery bank — but the benefits are real. The same principles apply whether you’re powering a small home or installing a full domestic system: choose reliable solar equipment, work with certified installers, and look for long-term value.

This guide brings together the top solar panel companies in the UK for 2025, comparing trusted providers that offer high-quality systems, fair pricing, and solid customer support. Whether you’re comparing solar installation companies, exploring battery-ready solar systems, or simply researching solar energy providers, this article will help you make a confident, well-informed choice.

What You’ll Learn in This Guide

• The top-rated solar panel installers UK homeowners rely on.
• Average solar panel installation costs and payback times for different system sizes.
• Which companies offer solar battery storage and smart monitoring systems.
• Practical advice for choosing the right solar provider to fit your home and budget.

By the end of this article, you’ll know exactly which solar company offers the best mix of value, warranty coverage, and dependable aftercare — so you can invest confidently and start saving with renewable energy this year.

What This Guide Covers

Choosing the right solar company can feel like a minefield — especially when every installer promises the best deal or latest technology. This section gives you a quick overview of what’s inside, so you know exactly what to expect before comparing the best solar companies in the UK.

What You’ll Find in This Guide

• Top-Rated UK Solar Installers for Homeowners – A handpicked shortlist of trusted, MCS-certified solar panel companies with proven track records.
• Cost and Payback Insights – Discover what solar panel installation really costs for UK homes in 2025, and how long it typically takes to see a return on your investment.
• Battery Storage and Smart Energy Systems – Learn how solar batteries, inverters, and smart monitoring tools can help you get more from your solar energy system.
• How to Choose the Right Solar Installer – A clear, step-by-step checklist to help you compare quotes, warranties, and aftercare with confidence.

Whether you’re comparing solar installation companies, exploring home solar panel systems, or ready to request quotes, this guide is designed to be the final step in your research — giving you practical advice, reliable comparisons, and direct links to trusted UK solar providers.

💬 Quick Tip: Every company featured in this guide is MCS-certified or partners with accredited UK installers. Always double-check certification and warranty details before signing any contract.

Quick Comparison Table – Best UK Solar Providers at a Glance

With so many solar companies in the UK to choose from, finding a trustworthy installer can feel overwhelming. To make things easier, here’s a side-by-side comparison of the most reliable solar energy companies for homeowners in 2025.

This table highlights what each provider offers — from domestic solar panel installation and battery storage to EV charging options, warranties, and customer reviews. Use it to compare the best solar companies in the UK quickly and confidently.

UK Solar Company Comparison Table

✅ = Service offered or supported
❌ = Not offered or not the company’s main focus

Note: Warranties and ratings may vary slightly depending on your chosen solar panel system and installation package.

Homeowner Tip: Always make sure your installer is MCS-certified and provides full documentation for warranties, maintenance, and aftercare. Choosing a certified provider ensures your system qualifies for UK solar incentives like the Smart Export Guarantee (SEG).

Why This Table Helps

This chart gives you a clear overview of the best UK solar panel companies and what they offer. From warranty length to smart energy options, it’s designed to help you compare quickly and make an informed decision.

Up next, we’ll break down what makes each solar installer stand out — so you can choose the perfect match for your home, budget, and long-term energy goals.

What to Expect When Installing Solar Panels at Home

Before choosing a solar company in the UK, it’s important to understand what to expect — from installation costs and long-term savings to government incentives. Prices vary depending on your roof size, energy use, and whether you include battery storage, but the overview below will give you a solid idea of what’s typical for 2025.

Average Solar Panel Installation Costs in the UK (2025)

These figures reflect average 2025 prices from MCS-certified solar installers. Actual costs can vary slightly depending on your location, roof structure, and the solar panel brand you choose.

Typical Solar Payback Time

Most UK homeowners see a return on investment within 6–10 years, depending on energy usage and the Smart Export Guarantee (SEG) rate. After that, your solar power is essentially free. With the right care and maintenance, most solar panel systems last well over 25 years, giving you decades of renewable, low-cost energy.

How to Maximise Your Solar Savings

To make the most of your home solar system:

• Use energy-hungry appliances — like washing machines or dishwashers — during daylight hours.
• Add solar battery storage to store unused power for evenings.
• Pick a solar company that supports the Smart Export Guarantee (SEG) so you can earn money for excess energy sent back to the grid.

Pro Tip: Smart use of appliances and storage can increase your solar savings by up to 30% per year.

Government Incentives for UK Homeowners

• Smart Export Guarantee (SEG): Earn payments for any electricity your panels export back to the grid.
• 0% VAT on Solar Panel Installations: Extended through 2025, cutting upfront costs for residential solar systems.

Homeowner Tip: Always get at least three quotes from MCS-accredited solar installers. Comparing prices side by side helps you find the best value, better warranties, and dependable aftercare — while staying protected under UK consumer standards.

The Best Solar Companies for UK Homeowners in 2025

Each company on this list has been chosen for its reputation, certification, customer feedback, and long-term value. Whether you’re looking for a full-service solar installation or a DIY solar kit, these are the best solar companies in the UK to consider in 2025.

Joju Solar – Best Full-Service Solar Installer in the UK

At a Glance:

• Based in: Sheffield
• Services: Domestic and commercial installs, EV charging, battery storage systems
• Warranty: 25 years (panels)
• Rating: ⭐⭐⭐⭐⭐ (5.0 Google)

Joju Solar is widely recognised as one of the top solar panel companies in the UK for homeowners seeking a professional, end-to-end service. With over 17 years of experience, Joju offers transparent pricing, community-focused values, and exceptional aftercare. They manage everything — from solar panel design and installation to maintenance and support — so you can enjoy a stress-free experience.

They were among the first UK companies to install the Tesla Powerwall, showing their commitment to renewable energy innovation. For homeowners who value quality and reliability, Joju Solar remains a standout choice.

Best For: Homeowners who want premium solar installation with full project management.

• Pros:
• MCS-certified and RECC member
• Complete solar system design and installation
• Tesla Powerwall partner
• Excellent customer feedback

• Cons:
• Higher upfront cost (balanced by long-term value)
• Longer lead times due to high demand

Visit Joju Solar

Deege Solar – Best Solar Company for Smart Tech & Value

At a Glance:

• Based in: Essex
• Services: Domestic & commercial solar panel systems, batteries, EV chargers
• Warranty: Up to 25 years
• Rating: ⭐⭐⭐⭐ (4.4 Google)

Deege Solar is one of the best UK solar energy companies for homeowners who want modern, smart, and affordable solar systems. They partner with leading brands like SolarEdge and Growatt, offering app-based monitoring so you can track your system’s performance in real time.

With over 25,000 installations nationwide, Deege has built a strong reputation for delivering high-quality, affordable solar solutions. Their partnership with Octopus Energy makes them ideal for homeowners looking to benefit from flexible tariffs and better export rates.

Best For: Homeowners who want smart, app-connected solar systems with great support.

• Pros:
• Smart monitoring via app
• Great value for money
• MCS-certified and UK-wide coverage
• Partnered with Octopus Energy

• Cons:
• High demand may lead to scheduling delays
• Occasional response delays during busy periods

Visit Deege Solar

Geo Green Power – Best Solar Company for Large Homes & Long Warranties

At a Glance:

• Based in: Nottingham
• Services: Domestic, commercial, and agricultural solar installations
• Warranty: 25 years (panels), 20 years (inverters)
• Rating: ⭐⭐⭐⭐ (4.3 Google)

Geo Green Power is one of the top-rated solar panel installers in the UK, known for engineering excellence and industry-leading warranties. They’ve completed projects for major brands like Volkswagen, JCB, and G4S, proving their reliability across both residential and commercial projects.

Homeowners appreciate their professional approach, strong technical knowledge, and long-term aftercare. Their solar systems are designed to last, offering durability and strong returns over time.

Best For: Larger homes, rural properties, or anyone seeking long-term reliability.

• Pros:
• Long warranties on panels and inverters
• Proven expertise across multiple industries
• High-quality components and craftsmanship

• Cons:
• Slightly higher upfront cost
• Less suitable for small installations

Visit Geo Green Power

Sunstore Solar – Best for DIY & Off-Grid Solar Kits

At a Glance:

• Based in: West Sussex
• Services: DIY solar panel kits, off-grid and small home systems
• Warranty: Up to 10 years
• Rating: ⭐⭐⭐⭐ (Trustpilot)

Sunstore Solar is ideal for homeowners who want a DIY solar installation or smaller, flexible setups. Their ready-to-use solar kits include everything you need — panels, batteries, inverters, and wiring — all pre-matched for easy installation.

Perfect for small homes, garden offices, and off-grid cabins, Sunstore Solar makes renewable energy affordable and accessible. Their customer service is known for being friendly, supportive, and fast, helping first-time installers get started with ease.

Best For: Homeowners who want affordable, DIY-friendly solar kits.

Pros:
Affordable and complete solar kits

• Fast delivery across the UK
• Excellent customer support
• Perfect for small or off-grid setups

• Cons:
• No in-person installation option
• Limited scalability for large systems

Visit Sunstore Solar

These four solar energy providers represent some of the best solar companies in the UK for 2025 — offering reliable installations, certified service, and long-term value for your home’s renewable energy future.

How to Choose the Right Solar Company for Your Home

Finding the best solar company in the UK isn’t just about the lowest price — it’s about trust, quality, and long-term value. This easy guide helps UK homeowners compare the top solar panel installers and make confident decisions before signing a contract.

1. Get Multiple Quotes

Always request at least three quotes from MCS-certified solar installers. Comparing prices helps you spot fair deals, avoid hidden costs, and flag any red flags.

Tip: Be cautious of high-pressure sales tactics or same-day offers. Reputable solar installation companies will always give you time to review and compare their quote properly.

2. Check MCS and RECC Certification

Your installer should be MCS-certified and a member of the Renewable Energy Consumer Code (RECC). These accreditations ensure your solar energy system meets UK safety and quality standards and that you’re protected under consumer law.

3. Research Customer Reviews

Don’t rely solely on the company’s website. Check Google, Trustpilot, and Facebook for authentic feedback about solar panel installation companies. Pay special attention to how they handle complaints — that’s often a better indicator of service quality than a perfect score.

4. Compare Warranties and Aftercare

Strong warranties show confidence in workmanship and equipment. Look for at least 25 years on solar panels and 10–20 years on inverters. Also, ask if the company offers ongoing monitoring, maintenance, or aftercare for your system.

5. Ask About Battery Compatibility

Even if you’re not ready to install a battery yet, choose a battery-ready solar system. It’s an easy way to futureproof your setup and gives you flexibility to add solar battery storage later on.

6. Consider Smart Integration

Modern solar power systems often include smart monitoring apps that let you track generation and usage in real time. These tools help you understand your energy patterns and reduce grid reliance — perfect for eco-conscious homeowners.

7. Check Local Experience

Look for solar installers near you who understand your local roof types, weather conditions, and planning regulations. Local experience often leads to smoother, faster installations and more accurate recommendations.

8. Review Payment and Financing Options

Some solar companies offer flexible finance plans or interest-free options, especially for domestic installations. MCS-accredited providers may also partner with government-backed schemes to make solar power more affordable.

Homeowner Tip: The cheapest quote isn’t always the best. Look for a balance of price, component quality, and aftercare service — that’s where the real long-term savings come from.

Quick Homeowner Checklist

• Got at least 3 quotes from MCS-certified solar installers
• Verified RECC membership and warranty coverage
• Reviewed genuine customer feedback online
• Confirmed battery compatibility for future upgrades
• Asked about smart app integration and monitoring
• Found local experience with similar homes
• Compared total costs, including aftercare and VAT

Once you’ve ticked these boxes, you’re ready to move forward with a trusted UK solar energy provider — one that delivers reliable performance, long-term savings, and peace of mind.

FAQs – Solar Panels for UK Homeowners

When researching solar panels in the UK, many homeowners have questions about installation costs, performance, and government incentives. Below are clear, no-nonsense answers to the most common solar energy queries for 2025.

Are Solar Panels Still Worth It in 2025?

Yes — more than ever. Installing solar panels for your home is still one of the best ways to cut energy bills and increase your home’s energy independence. With electricity prices staying high and 0% VAT on solar installations extended through 2025, the average payback period now sits around 6–10 years, depending on usage and whether you include solar battery storage.

Quick Fact: Adding solar battery storage can further reduce reliance on the grid and help you make the most of your generated power.

Can I Sell Electricity Back to the Grid?

Absolutely. Thanks to the Smart Export Guarantee (SEG), UK homeowners can sell unused electricity back to the grid and earn payments from their energy supplier. Rates vary by provider, so compare SEG tariffs before choosing your solar energy company or supplier.

Tip: Some of the best solar companies in the UK offer guidance on SEG registration and help you choose the most profitable tariff.

What Size Solar System Does the Average Home Need?

Most semi-detached homes perform well with a 3kW–5kW solar power system, which comfortably meets daily household needs. Larger homes or families with higher energy use might need a 6kW+ setup, particularly if you include solar batteries for overnight power.

Pro Tip: Ask your solar installer to complete a personalised energy audit. The right system size boosts efficiency and maximises your long-term savings.

Are There Any Solar Grants or Tax Reliefs Available?

Yes. The UK government’s 0% VAT incentive for domestic solar panel installation remains active through 2025, reducing upfront costs. Some councils and UK solar providers also partner with energy firms to offer green home grants or low-interest finance options.

💬 Tip: Ask your solar company if they’re aware of any local funding or discount schemes in your area.

How Long Does Solar Panel Installation Take?

Most solar panel installations take one to three days, depending on your roof size, system design, and weather conditions. If you’re adding solar battery storage, expect an extra day for setup and testing.

Homeowner Tip: Before installation day, confirm access points, scaffolding arrangements, and timelines with your installer to avoid last-minute delays.

Do Solar Panels Work in Cloudy Weather?

Yes — and better than most people expect. Even under cloudy UK skies, solar panels can generate 60–80% of their normal output. This means steady power generation all year round, even during winter months.

Tip: Choosing high-efficiency panels from reputable solar companies ensures better performance in lower-light conditions.

What Happens if I Move House?

You have two main options: transfer the solar system to the new homeowner or take it with you. Most buyers see solar panels as a selling point, often increasing property value by up to 4%.

Tip: Keep your warranty documents and performance reports handy — they help reassure potential buyers and support a higher asking price.

Do I Need Planning Permission for Solar Panels?

In most cases, no planning permission is required. Solar panels are classed as permitted development under UK law. However, if your property is listed or in a conservation area, you’ll need to check with your local planning authority first.

Homeowner Tip: Verify your area’s rules before installation to avoid unnecessary delays — especially for older or listed properties.

Final Word:
Installing solar panels in the UK has never been easier or more rewarding. With the right solar energy provider, you can enjoy lower bills, energy independence, and a smaller carbon footprint for years to come.

Ready to Go Solar? Here’s Your Next Step

If you’ve made it this far, you’re already taking the first step toward energy independence. Installing solar panels in the UK is one of the most reliable and cost-effective ways to cut energy bills, increase property value, and reduce your carbon footprint. The best solar companies in the UK featured in this guide have proven track records, helping homeowners generate clean, affordable power for decades.

Our Top Picks for UK Homeowners

• Joju Solar – Best for full-service installation and reliable aftercare.
• Deege Solar – Best for smart technology integration and all-around value.
• Geo Green Power – Best for large homes and homeowners who want premium systems and long warranties.

Each of these MCS-certified solar panel installers is trusted by UK homeowners for their quality workmanship, transparent pricing, and dependable aftercare.

Pro Tip: Always check that your installer is MCS and RECC certified — this ensures your installation meets UK standards and qualifies for incentives like the Smart Export Guarantee (SEG).

Why Act Now?

Energy prices remain unpredictable, and while solar panel installation costs and VAT incentives are currently favourable, they may not stay that way for long. Acting now means you can lock in today’s prices and start saving sooner.

Homeowner Tip: The sooner your system is installed, the faster you’ll begin generating free electricity — and earning SEG payments for the extra power you export to the grid.

Final Word

Choosing the right solar company isn’t just about saving money — it’s about building long-term energy security and sustainability. With a trusted solar energy installer, you can power your home reliably for decades while doing your part for a cleaner future.

Start today — compare the best solar companies in the UK and take charge of your home’s energy future.