Which UK Solar Company Is Best in 2026?
Choosing the best UK solar company is not simply about finding the cheapest quote or the installer with the most reviews. A good provider should design around your roof, electricity use and budget, install safely and provide long-term support.
For most homeowners, Octopus Energy is our best overall UK solar company in 2026. It suits households wanting panels, batteries, smart tariffs and monitoring.
Simple Green Energy ranks second for its more personalised approach, flexible equipment options and ability to plan solar alongside batteries, EV charging and heat pumps.
E.ON Next stands out for transparent package pricing, Heatable for its digital quotation process, Sunsave for subscription finance and Joju Solar for complex technical projects.
Editorial disclosure: This guide was prepared for Simple Green Energy, which appears at number two. Rankings are based on publicly available information covering accreditation, pricing transparency, warranties, equipment, aftercare and suitability. Compare at least three property-specific quotations before signing.
The best UK solar companies at a glance
| Rank | Company | Best for | Main strength |
|---|---|---|---|
| 1 | Octopus Energy | Best overall | Solar, batteries, tariffs and monitoring in one ecosystem |
| 2 | Simple Green Energy | Personalised advice | Tailored systems and flexible technology options |
| 3 | E.ON Next | Clear pricing | Published package prices and battery-ready systems |
| 4 | Heatable | Online quotations | Fast digital roof assessment and buying journey |
| 5 | Sunsave | No large upfront payment | Subscription including monitoring and maintenance |
| 6 | Project Solar UK | Warranty-focused buyers | Strong long-term protection proposition |
| 7 | Glow Green | Multi-technology packages | Solar, batteries, EV chargers and heat pumps |
| 8 | Solar4Good | Service-led installation | Survey-led approach and in-house installation positioning |
| 9 | Joju Solar | Complex projects | Long-standing technical and commercial experience |
1. Octopus Energy: best overall
Octopus Energy takes first place because it combines solar installation, batteries, smart import and export tariffs, app-based monitoring and national support.
Customers can coordinate panels, storage and energy tariffs through one provider rather than dealing with several companies.
The main drawback is price. Octopus may not be the cheapest panel-only option, so compare its quote with equivalent systems from other MCS-certified installers.
2. Simple Green Energy: best for personalised advice
Simple Green Energy offers a more consultative alternative to fixed national packages. It suits homeowners wanting a system designed around their roof, usage and future technologies.
The company supplies solar panels, battery storage, EV chargers and heat pumps, allowing customers to plan upgrades in stages. It offers MCS-certified installation, personalised quotations, eligible finance and extended warranties on selected equipment.
Before signing, confirm the exact panel, inverter and battery models, together with the product, performance, workmanship and insurance-backed warranty terms.
3. E.ON Next: best for transparent package pricing
E.ON Next is useful for buyers who want a clear benchmark. At the time of review, it advertised packages from £4,995 for six panels and £6,495 for 12 panels, with hybrid inverters that allow a battery to be added later.
Its strengths include published specifications, high-output panel options and integration with import and export tariffs. However, advertised prices normally assume a standard installation. Scaffolding, difficult access, electrical upgrades or complex roof layouts may increase the final cost.
4. Heatable: best online quotation process
Heatable provides a digital-first buying journey. Its roof-mapping tool estimates system size, layout and price before a complete MCS design.
This suits homeowners who want a quick indication without arranging several initial visits. The trade-off is that installation may be completed by an approved partner. Confirm the installer’s legal name and MCS number, plus responsibility for faults, warranties, certification and aftercare.
5. Sunsave: best solar subscription
Sunsave offers solar panels and battery storage through fixed monthly payments rather than a large upfront purchase. Its subscription includes long-term monitoring, maintenance and replacement-part protection, while customers own the system from installation.
This model can help households preserve savings and budget predictably, but it is a long financial commitment. Compare the total repayable amount, early-settlement terms, property-sale arrangements and continuing guarantee conditions with cash purchase and shorter-term finance.
6. Project Solar UK: best for long-term protection
Project Solar UK is a large national specialist with a strong emphasis on warranties and long-term panel protection.
Do not judge the package on warranty length alone. Check whether each promise covers the product, performance or workmanship; whether labour and scaffolding are included; and what happens if the installer stops trading.
7. Glow Green: best for competitive multi-technology packages
Glow Green supplies solar panels, batteries, EV chargers, boilers and heat pumps. It suits homeowners planning several upgrades through one provider.
The company promotes competitive pricing, long panel warranties and recognised industry credentials. As with any national network, confirm who will complete the installation, who holds the contract and who remains responsible for roof damage, faults and warranty support.
8. Solar4Good: best for service-led installation
Solar4Good positions itself as an MCS-certified specialist offering free surveys, an advisory sales process and an in-house installation team. It is worth considering where local coverage is available, especially for homeowners wanting a survey-led discussion.
Check whether the same contracted company will complete the survey, scaffolding, electrical work and commissioning, and confirm expected installation and aftercare times in your postcode.
9. Joju Solar: best for complex projects
Joju Solar is a long-established solar, battery and EV-charging specialist with residential, commercial and public-sector experience. It suits unusual roofs, larger systems, three-phase supplies, existing arrays and advanced battery or EV integration.
Bespoke engineering may cost more than a standard package, but it can be better value where a basic online design would not address the property’s technical requirements.
How we compared UK solar installers
A credible comparison must look beyond review scores. The most important checks are:
MCS certification: Verify the installer on the MCS database. It supports recognised quality and export-payment eligibility.
Consumer protection: Look for membership of an approved code such as HIES or RECC, which may provide payment protection, guarantees and dispute resolution.
System design: The proposal should account for roof conditions, consumption, battery strategy, DNO limits and future demand.
Named equipment: Specify the exact panels, inverter, battery, mounting system and monitoring platform. Avoid vague descriptions such as “premium panels”.
Warranty clarity: Separate the product, performance, inverter, battery, workmanship and insurance-backed warranties. A headline “25-year warranty” may cover only one component.
Complete pricing: Confirm inclusion of scaffolding, electrical work, bird protection, DNO applications, VAT, monitoring and certification.
Aftercare: Ask who diagnoses faults, manages manufacturer claims and pays for labour or scaffolding after installation.
How much do solar panels cost in 2026?
A typical domestic system of about 4.5kWp is estimated at roughly £7,600, although quotations vary by equipment and property. Battery storage commonly adds £5,000 to £8,000.
Broad planning ranges are:
| Installation | Indicative price |
|---|---|
| Small panel-only system | £4,500–£6,500 |
| Typical 3.5–4.5kWp system | £6,000–£8,500 |
| Solar panels with a medium battery | £9,000–£14,000 |
| Larger solar-and-battery system | £12,000–£18,000+ |
Costs rise with difficult scaffolding, several roof elevations, slate or fragile coverings, long cable routes, electrical upgrades, premium equipment, optimisers, backup-power capability and bird protection.
Qualifying residential installations in Great Britain are zero-rated for VAT until 31 March 2027 under the timetable.
Are solar panels worth it?
Solar can be worthwhile where the roof has limited shading, the installation is fairly priced and the household uses a meaningful share of generation. Savings depend on system size, daytime consumption, electricity tariffs, export rates and battery use. Panels still generate in winter, but output is lower because days are shorter.
How to choose the right installer
Start with at least 12 months of electricity bills and consider future demand from an EV, heat pump, extension or home office. Check the roof’s orientation, shading, condition and available area.
Obtain at least three quotations based on comparable requirements. Compare total system capacity in kWp and estimated annual generation in kWh rather than panel count alone.
Every quote should identify the equipment, expected generation, self-consumption, export assumptions, warranties, payment terms and all additional costs. Review finance using the cash price, APR, monthly payment, total repayable and early-settlement rules.
Finally, insist on a proper technical survey before the contract becomes binding. It may reveal roof defects, access problems, electrical limitations, DNO restrictions or unsuitable battery locations.
Frequently asked questions (FAQs)
Clear answers to common questions about choosing a UK solar company, installer accreditation, quotations, equipment, installation times and planning permission. Speak to Simple Green Energy .
Need help comparing UK solar installers?
Speak with Simple Green Energy about system design, solar panels, battery storage, warranties and the right installation approach for your property.
Review my solar optionsFinal recommendation
Octopus Energy is the best overall UK solar company in 2026 for homeowners seeking an integrated system combining panels, battery storage, smart tariffs, monitoring and national support.
Simple Green Energy is our second choice and may be the better fit for homeowners wanting personalised advice, flexible equipment and a phased plan involving batteries, EV charging or a heat pump.
E.ON Next is strongest for transparent package pricing, Heatable for online convenience, Sunsave for subscription finance, Project Solar UK for warranty-focused buyers and Joju Solar for technically complex installations.
Decide on the property-specific design, equipment, protection and aftercare—not the name or headline price. Compare at least three quotes, verify MCS status and ensure every savings estimate reflects your roof and electricity use.
