solar power grants uk

10 Best Solar Panel Companies UK

ByEditorial Staff

The UK seems to have caught up and the solar market currently stands at 18.53 GW and is stipulated to grow to around 53.12 GW by 2029. Residential PV installations continue to run the game, however, with government incentives, community solar projects, and integrated storage systems, large-scale solar projects have also become an important part of the domestic solar market in the UK.

If you’re a conscious consumer or a business owner looking to transition to solar power, you’ve landed at just the right place! Today we will be telling you about the Top 10 solar companies in the UK, picked out through meticulous research!

Also, if you are looking for solar grants in the UK , you might want to check out the article below:

Solar Power Grants and Funding in the UK 2025

 

 

Table of Contents

 

 

Top Solar Companies – Selection Methodology   

 

A basic requirement when it comes to companies dealing with green energy is an MCS accreditation. An MCS accreditation ensures that the company meets the standards prescribed for the industry in the UK, to learn more about What is the MCS certificate for Solar Panels you can read up on it further! Moving on from the baseline requirements, we considered criteria such as:

 

  • Labour and Product Warranty
  • Customer Reviews (from Trustpilot, UK which is a reliable review website for businesses worldwide)
  • Customer Service
  • Industry Experience
  • Range of Products and Services

 

 

10 Best solar panel companies in the UK (2025) 

 

 1. Project Solar

Project Solar is the UK’s largest solar installation company and one of the most credible ones. It has been offering its services across the country for over a decade. The panels are reliable and come with a warranty period of 99.9 years.  The price ranges vary across sizes but a standard 4kW system most commonly used across the UK is placed between £4,500 – £8,000, with a power output of 445kW and an efficiency of 21.4% The company also scores high on all criteria.

 

 

 

 

2. Solar Fast

Solar Fast leads in terms of industry experience and customer service, having been in the industry for more than 2 decades, since 2006. It uses highly efficient 440W panels and also supplies solar storage batteries, along with installing panels. They have been highly lauded for their prompt and effective customer response system and offer a product warranty of 25 years.

 

3. Heatable

Heatable offers REA Fusion panels, which are also suitable for low-light conditions and are ideal for houses and bungalows. Moreover, it offers a very interactive and easy-to-use user interface, wherein you can use their online quote tool for a bird eye’s view of your rooftop which would then be used to provide you with a quote! The prices range from £5,300 for around seven 440W panels with microinverters, they also provide storage battery options with some additional costs. They offer a standard product warranty of 25 years.

 

 

4. Octopus Energy:

Octopus Energy offers a smooth experience when it comes to solar panel installation. Their standard 440W panels come with a product warranty of 25 years and their products are known for their durability, high efficiency, and output even in low light conditions. Their microinverters also come with 25 years of warranty and the price range for their most popular 10-panel installation with a 5kWh battery is £9,199, which can also be paid in installments.

 

 

5. Glow Green

This UK-wide reliable installer is the right fit for you if you’re on a budget. Its like-for-like price match guarantee, promises to match a cheaper quote from another installer. It also offers other products like EV chargers, storage batteries, etc., with the best part being the different choices it offers when it comes to panels and batteries from the top manufacturers-  Trina, JA Solar, Perlight, and Tesla for batteries.

 

 

6. Egg (Cracking Energy)

 

If you’re looking to switch to solar when it comes to the needs of your business or any other commercial buildings, Egg is the right match for you. It is the top player in the market for B2B deals with an array of business as well as public-sector clients. It has recently been focusing on small firms and businesses, helping them reach their ESG(Environmental, social, and governance) goals. Other notable services include its 25-year product warranty and interest-free payment options that help spread the cost.

 

 

7. Everyone’s Energy UK

 

Everyone’s Energy UK offers the perfect transition to solar, at low costs by offering community-based installations under its partnership with Solar Together, a scheme that reduces individual costs by 30-35% Hence, it is the perfect match for people living in a flat or a block of houses, etc., It also offers an impressive variety of products- LG panels, SolarEdge and Lux Power inverters, etc., with a product warranty of 25 years. However, it only operates in London and South-East.

 

8. Sharp Solar

Sharp is an old and reliable Japan-based company which has a strong presence in the UK solar market. They are known for their durable and high-quality solar panels throughout the world and are committed to making solar energy more accessible. They offer panels in the price range of £5,500 – £7,000 for a 4kW system with an output of up to 420W and a warranty of 12-25 years.

 

 

9. Clever Energy Boilers:

It is a Keighley-based company that initially covered only Yorkshire but has now covers Lancashire, Humberside, Cheshire, and all of the Midlands, as well. It provides an excellent range of top-tier PV panels from Longhi, Trina, etc., plus batteries, EV chargers, and pumps as well. It is a well-regarded company with multiple business awards and with its wide range of products is perfect for EV owners.

 

10.  Warma-UK

Last on our list is Warma-UK, which is a Cheshire-based installer that now operates all across the UK. It is a one-stop shop- providing solar panels, batteries as well as heating and insulation solutions. It is praised for its excellent customer service and its proactivity in getting you government grants which help cut your installation costs.

 

 

Determining the number of Solar Panels you will need

 

This is a common question that might arise once you’re set on moving to solar. The following factors need to be kept in mind while calculating your energy requirements:

  1. Your current energy usage(in kWh)
  2. Average energy requirements of your home
  3. Climate and sunlight hours in your area
  4. Efficiency of the solar panels
  5. Size of the solar panels

 

  • Calculations-

The average daily energy usage(which can be calculated from your electricity bill) will serve as your target daily average while determining your solar needs. It is also important to note that solar panels do not operate at their maximum capacity 24/7- weather conditions and other factors can sometimes hinder their efficiency and output. Therefore, experts recommend adding a 25 percent ‘cushion’ to your daily average to ensure that solar power meets all your energy needs.

 

  • Efficiency and size of the solar panels-

The efficiency and size of solar panels more or less follow a standard range, with some differences from company to company. In terms of efficiency, the average output of residential solar panels in the UK is 250-400 watts each. As for the size, certain factors like available roof space and orientation, energy requirements, etc., play a vital role in determining exactly what kind of solar panels you can use. The average size of solar panels for residential purposes ranges between 250W-450W and the size of solar panels lies between 1.62 meter sq. x 2 meter sq.

 

 

 

Reasons to shift to solar

 

  • Save money and safeguard against energy rises:

The Energy crisis post the pandemic in 2021 and then disturbances in Russia and Ukraine drove gas, electricity, and oil prices very high all across the world, particularly in Europe. Under the direct debit price cap from April to June 2024, the typical annual bill for gas and electricity consumption is £1,690 which is 39% higher than the winter of 2021/2022. With a switch to solar, you will have a safeguard against such fluctuations in the future!

  • Long Lasting and durable:

Most solar installations come with long years of warranties. Once installed, you can sit back and relax, only catering to the occasional maintenance needs.

 

  • Earn money through grid trading:

 You heard it right! you can now earn a bonus by shifting to solar. You can store the surplus energy generated through your solar application and export it back to the national grid when needed. To Know About how to Sell You Excess Solar Energy Back to the Grid to make money, check out the article below :

Can I sell my excess solar energy UK?

 

  • Saving the environment 

As a responsible citizen of the world, you could take pride in switching to solar! It can help cut down your carbon footprint and does not have any harmful by-products or after-effects. A home solar PV system can save up to a tonne and a half of carbon dioxide every year!

 

Final Thoughts : 

 

The share of solar power in the world energy mix has been seeing a growth unprecedented by any other sources- it has gone from 4.6% in 2022 to 5.5% in just two years! With such rapid growth and consumption, renewables  are here for the long run and the faster we adapt to them, the better it is for our future!

 

 

Shifting to Solar can be an energy-saving (and Life changing!) decision. With the growing market and varied demands, it is extremely important to go for companies that cater to your specific needs and make the process a seamless one! With our list of the top solar companies, you can start your journey by negotiating quotes with the one that best suits your needs and go green! 

 

 

 

Frequently Asked Questions

In terms of energy efficiency, solar panels are better than solar shingles. In terms of appearance, solar shingles have an edge over solar panels with their sleek and sophisticated look.

Solar panels and Shingles can last 25-30 years. However, it varies from company to company .

A solar shingle, also known as solar roof tiles, are composed of semiconducting material and work to harness solar energy and convert it into electricity. It is an advanced roofing solution.

A solar panel is made up of solar cells, which are typically monocrystalline or polycrystalline, whereas solar tiles are made of Copper Indium Gallium Selenide. The function of solar panels is energy production, whereas solar tiles were designed to be an alternative roofing option while producing electricity.

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