Project Solar UK

Short answer: my UK shortlist

If I were buying solar in the UK, I’d get three MCS-certified quotes and ask each installer to price the same spec: panels, inverter, battery, bird protection, scaffolding, DNO application, workmanship warranty and MCS handover. In the UK you usually buy solar through an installer, not directly from a panel maker, and Which? notes that many installers only offer one or two panel brands—so comparing quotes is more important than chasing a single “best” panel brand. (which.co.uk)

Best UK solar installers to shortlist

Avoid relying on old “best installer” lists without checking trading status. For example, FMB notes that Effective Home, which appeared in older roundups, ceased trading at the end of June 2026. (fmb.org.uk)

Solar panel brands people actually use in the UK

These are the panel brands I’d be happy to see on a UK quote, assuming the specific model has a decent warranty and the installer is reputable:

Which? says its UK owner research and lab tests cover popular brands including AIKO, JA Solar, LONGi and Trina, and its 2026 comparison also includes Canadian Solar, Jinko, REC, SolarEdge and Trina. (which.co.uk) UK installer research also says major Chinese manufacturers dominate the UK module market, while brand choice is strongly influenced by wholesalers. (renewableenergyinstaller.co.uk)

Inverters and batteries I’d actually consider

For UK homes, installer research highlights Solis, GivEnergy, Tesla, Enphase and SolaX Power as brands that sit in the top group for UK installer awareness and portfolio presence in inverters/storage. (renewableenergyinstaller.co.uk)

My “safe” spec for a typical UK house

For a normal semi/detached house, I’d usually ask for quotes around:

• 4–6kWp of panels using JA Solar, Trina, LONGi, AIKO or Jinko
• 5–10kW inverter, depending on array size, export limit and battery
• 9–13.5kWh battery if you have evening usage, EV, heat pump, or a smart tariff
• Bird protection, especially if pigeons are common locally
• Scaffold, DNO G98/G99 paperwork, MCS certificate, electrical certificate and handover pack included
• At least 10 years workmanship cover, ideally insurance-backed

If you want the least risky brand combination, I’d start with JA Solar / Trina / LONGi panels + GivEnergy battery, or AIKO/Jinko panels + Tesla Powerwall 3 if you want a more premium setup.

Non-negotiables before signing

1. Use an MCS-certified installer and MCS-certified products. You’ll commonly need an MCS certificate for Smart Export Guarantee payments, and Energy Saving Trust says installers should register your system within 10 working days of commissioning. (energysavingtrust.org.uk)
2. Get three quotes. Energy Saving Trust specifically warns against heavy-handed sales tactics, “sign today” discounts and comparing on price alone. (energysavingtrust.org.uk)
3. Don’t pay a huge deposit. Energy Saving Trust says your deposit should not be more than 25% of the full cost and should be protected with insurance. (energysavingtrust.org.uk)
4. Ask for the exact model numbers. “JA Solar panels” or “GivEnergy battery” is not enough—ask for datasheets, warranty documents and the proposed roof layout.
5. Compare payback using your real usage. Solar is best if you use power in the day, have a battery, charge an EV, run a heat pump, or can use a good export tariff.

My final recommendation: shortlist one good local MCS installer, Solar4Good or Glow Green, and Octopus Energy if tariff integration matters. For hardware, prioritise AIKO, JA Solar, Trina, LONGi, Jinko or REC panels, paired with GivEnergy, Tesla Powerwall 3, SolarEdge, Enphase, Solis/SolaX/Fox ESS or Sigenergy depending on your budget and roof complexity.

Best Solar Companies & Products in the UK (2026)

The UK solar market splits into two categories worth knowing: panel manufacturers (who make the tech) and installers (who sell and fit it). Here's what's actually recommended right now.

🏆 Top Solar Panel Brands

LONGi – Currently the top overall pick for most UK homes. The best solar panel for most UK homes in the 2026 comparison is the LONGi Hi-MO X10 485W, combining 23.8% efficiency, strong output and excellent long-term performance. It also has less than 1% first-year degradation, followed by annual degradation of approximately 0.35% from years two to 30.

Other standout panels by category:

• Best value: JA Solar JAM54D40 455W
• Highest efficiency: AIKO Neostar 3S
• Best long-term output retention: REC Alpha Pure-R

Premium option: SunPower panels offer industry-leading performance with efficiencies reaching up to 24%, and their low degradation rate ensures minimal loss of output over time. Expect to pay more — premium brands like SunPower Maxeon and REC reach 22.8–24% efficiency with warranties up to 40 years, worth the 15–25% premium mainly where roof space is tight.

Best mainstream "everyday" brands: JA Solar, LONGi, Trina Solar, Aiko and Qcells offer the best value, pairing 21–23% efficiency with 25–30 year warranties. These are the brands installers use most often on standard UK homes.

If you want a discreet, integrated look: Viridian is a UK-based manufacturer known for its roof-integrated solar panels — instead of sitting on top of the roof, these panels replace roof tiles, creating a seamless finish and reducing wind resistance.

🔧 Top Installers People Actually Use

Glow Green – Frequently ranked #1 overall. Crowned best overall for their combination of affordability, reliability and comprehensive service, using high-efficiency panels from brands like Perlight and DMEGC, flexible financing, and MCS/NICEIC accreditations.

Solar4Good – Excellent for panel/battery choice and reviews. They work with established panel brands such as Jinko, Trina, JA Solar, DMEGC and Aiko, and battery/inverter brands including GivEnergy, Fox ESS, Sigenergy and Tesla, and are rated 4.8/5 on Trustpilot with 775+ reviews and 9.7/10 on Checkatrade, having won the FMB Award 2024 for Best Customer Service. Trustpilot reviews specifically praise the high quality of after-sales care and customer service, as well as pricing and speed of installation.

Other well-regarded national installers: Effective Home and Project Solar have retained top spots for consistent quality, and Project Solar UK, Otovo, Geo Green Power, Sunsave, and Solar Fast are also frequently recommended.

For battery/subscription-style deals: Sunsave stands out as the only top-rated company offering solar subscriptions, which suits people who prefer no upfront cost.

🔋 Battery & Inverter Brands to Pair With Panels

The names that come up repeatedly alongside top panel brands are GivEnergy, Fox ESS, Sigenergy, and Tesla for batteries/inverters — these are commonly b

If you want the best solar companies in the UK that people actually use, the strongest names in the current roundups are Glow Green, Project Solar UK, Sunsave, Solar4Good, Heatable, Octopus Energy Solar, and Effective Home.

The safest short list, based on repeat appearances across UK installer guides, customer-review signals, and coverage, is:

• Glow Green — often listed as best overall and supported by a very large Trustpilot review count.
• Project Solar UK — repeatedly cited for warranties and broad UK visibility.
• Solar4Good — frequently highlighted for customer service and strong review scores.
• Sunsave — commonly positioned as a solar subscription option rather than a traditional purchase model.
• Heatable — selected as a top nationwide installer in one UK guide.
• Octopus Energy Solar — appears as an editor’s pick in one comparison and is backed by a major UK energy brand.
• Effective Home — shows up in multiple “best installers” lists and is often rated well by reviewers.

If you specifically mean solar panel brands/products people buy in the UK, the names that come up most often in installer comparisons are Tesla Powerwall for batteries, SunPower panels, LG panels, JA Solar, Growatt, and Fox ESS in system packages. UK brand UKSOL is also a recognized British module maker in the industry directory.

A practical way to choose is:

• Best overall installer: Glow Green.
• Best warranty focus: Project Solar UK.
• Best customer service: Solar4Good.
• Best subscription model: Sunsave.
• Best nationwide convenience: Heatable or Octopus Energy Solar.

If you want, I can turn this into a ranked top 10 for UK homes, or narrow it to best budget, best battery-and-solar package, or best installers in your region.

The best solar installers and brands in the United Kingdom combine reliable hardware, strong warranties, and integration with smart energy tariffs like those from Octopus Energy.

Top Solar Installers in the UK

Project Solar UK: One of the largest and most experienced national installers with over 45,000 completed projects, known for premium panel options and robust long-term warranties. Octopus Energy: Highly rated national energy supplier providing streamlined solar and battery bundles designed to sync with smart, low-cost dynamic electricity tariffs. Solar4Good: A fast-growing residential installer praised for top-tier customer service, customisable packages, and reliable installation standards.

Popular Solar Panels and Hardware Brands

Maxeon (SunPower): Premium high-efficiency panels (up to 23%) backed by extensive industry warranties. Tesla Powerwall: Widely considered the gold standard for residential battery storage in the UK due to its reliable capacity and software integration. Anker SOLIX: Popular for flexible whole-home energy storage and plug-and-play battery systems optimized for smart home energy tracking. JA Solar / Jinko Solar: Market favorites for delivering a dependable balance of high performance and budget-friendly pricing.

If you share your postcode or region and whether you want battery storage included, I can help narrow down the best local or national setup for your home.