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The Independent
09-04-2025
- Business
- The Independent
The best solar panel installers in the UK
If you're interested in generating your own cheap solar power and you're ready to choose a company to fit your solar panels and connect them to your home, this is the guide for you. There are about 4,000 solar installers in the UK, making the choice a dizzying one. But most only operate in certain areas, thinning the field for many homeowners. We compared price, warranty and customer satisfaction to choose the best solar panel fitters. Our top pick is Glow Green, because of its 14 years in the market and competitive pricing. But if access to certain panels, or a longer guarantee are your top priorities, then we may have a better fitter for you on our expert list. Whatever your budget, there are a range of companies in the UK supplying solar panels and services to suit all homes and needs. Our choices are certified by either MCS, the Flexible Energy Oversight Registration Body (Flexi-Orb), or both. Finding a fitter with one of these certifications is important, as it ensures that they have the know-how to fit the panels and other electrical equipment – some of it high voltage – safely. The law does not require fitters to have these certifications, but they do give customers some comfort that fitters know what they are doing. Best solar panel companies at a glance Fitter Price per installed kilowatt on a standard house With a battery pack Guarantee length Area covered Typical time from inquiry to installation Founded Best for Glow Green £795 to £1,195 £945 to £2,295 with 5kw battery 5 years, insurance-backed All of Great Britain 87 days 2011 Price – no cost overruns and a long track record Solar4Good On average, £1250 Around £1800 2 years of HIES-backed installation and workmanship warranty From Brighton to Edinburgh 4-5 weeks 2021 Supporting a family-run business, top customer satisfaction score Heatable £900 - £1000 £1400-£1500 2 years Workmanship warranty Mainland England, Scotland & Wales 2-3 weeks from network operator approval 2017 Access to high-quality REA Fusion2 panels and a quick turnaround, top customer satisfaction score Sunsave £95/month including all equipment, fitting, insurance, downtime cover Battery included 20 years all-inclusive England and Wales 6-8 weeks now, but aiming for 3-4 weeks 2022 Bigger households that want to borrow to get solar and plan on staying put for a while Project Solar UK Not supplied Not supplied 10 years workmanship England and Wales, excluding London Around 2-3 weeks from order to install 2011 Long workmanship warranty Best overall: Glow Green Price per installed kilowatt on a standard house: £795 to £1,195 With a battery pack: £945 to £2,295 with 5kw battery Guarantee length: 5 years, insurance-backed Area covered: All of Great Britain Typical time from inquiry to installation: 87 days Founded: 2011 Glow Green has been around as a company for the joint-longest in our list and offers a fixed cost guarantee, which will appeal to many buyers looking to keep to a budget. It's also one of the cheapest options on the market. As well as being affordable, Glow Green has access to high-power 500w panels from Chinese firm Perlight, whereas most competitor panels push out 400-450 watts. These are a good option if your roof space is limited, as you will get maximum output for the area that you have. Panels are one of the cheaper parts of a solar installation – most money goes on scaffolding and labour costs. Perlight panels also offer a 30-year guarantee, the longest we have seen in the UK, which may provide some comfort for those who don't want to have to rent scaffolding again for a while. Perlight panels boast high pressure resistance, meaning they should be able to weather the bumps, bangs and weather that 30 years on a roof will throw at them. Glow Green will also fit DMEGC Infinity panels, which came top of our best solar panels roundup. DMEGC is considered a Tier-1 manufacturer, an industry term for the biggest and longest-running solar panel makers, which have solid financial strength. The status is not a be-all and end-all for solar panel buyers but does indicate that a company has a good chance of honouring its guarantees and that its manufacturing processes are solid, which is useful bearing in mind how long the panels need to last. The DMEGC Infinity solar panel provides a good compromise between power output, long warranty and decent power longevity, offering more than 87 per cent of its box-fresh output after 30 years. Glow Green can fit heat pumps, EV chargers, boilers and air conditioning units. The company is also a Tesla Premium certified installer and a Duracell platinum partner for battery fittings. This means picking them affords some choice when it comes to panels, batteries and other gear. Choosing to get a heat pump, perhaps using the government's grant scheme to save money, whilst getting solar panels and other green goods at the same time could be a way to negotiate a better deal. We went along to watch a Glow Green installation, so we can attest to the quality of the company's work. Pros: Long guarantee Fixed costs Established firm Plenty of product choice Cons: Not the best customer review score Top customer satisfaction score: Solar4Good Price per installed kilowatt on a standard house: On average, £1,250 With a battery pack: Around £1,800 Guarantee length: Two years of HIES-backed installation and workmanship warranty Area covered: From Brighton to Edinburgh Typical time from inquiry to installation: 4-5 weeks Founded: 2021 Solar4Good is a family-run business set up in 2021, but drawing on its founders' 15 years of solar industry experience. Like most on the list, the company is MCS certified. MCS sets standards for low carbon products like solar panels, heat pumps and battery storage, and the companies which fit them. Solar4Good has HIES Membership, NAPIT Registration & Trustmark Endorsement. It also has the joint-highest online customer review score. The company's website is easy to use and has a comprehensive section answering many questions for potential customers. Reviewers say the firm's aftercare is particularly good. The firm also has plenty of offices dotted around the country, including Birmingham, Manchester, Exeter, Glasgow and Leicester, as well as its headquarters in Harrow. As with other fitters we have reviewed, the firm also fits EV chargers and battery storage which can help you make even more of your investment in solar panels. Solar batteries are great for homes that use a lot of electric power such as through electric car charging, a heat pump or lots of activity during the day. You can use them as a sort of time machine, to store sunlight power and use it at night. Just be careful if you are a light user of power, since they are still quite expensive and you may be better off selling your unused electricity to the grid during the day and simply buying it back later. If you run a business and want solar panels – a great option if you have your own premises such as a factory or warehouse – then Solar4Good can quote for these installations, too. Pros Cons Doesn't cover above Edinburgh Other companies have longer guarantees Best for high-end panels: Heatable Price per installed kilowatt on a standard house: A typical array of 7kW would cost £900 - £1,000 per kW With a battery pack: £1,400 - £1,500 Guarantee length: 2 years workmanship warranty Area covered: Mainland England, Scotland and Wales Typical time from inquiry to installation: 2-3 weeks from network operator approval Founded: 2017 Heatable distinguishes itself by having exclusive access to high quality REA Fusion2 panels. These offer a longer useable life than other panels, although they come at a cost premium to match. The company is a Tesla Premium Partner for batteries and holds Which? approval for both solar and heating equipment. Its quotes are fixed, with any additional costs such as unforeseen structural issues or existing electrical faults being picked up in the survey they perform before beginning work. Heatable has one of the best online review scores. Customers say they can tackle older properties and that they would recommend the company to their friends. Heatable's website offers an online design process, so you can use satellite imagery to estimate how many solar panels you can get on your roof, and thus how much solar power can be supplied. We found this quite easy to use and it gave a very good indication of what a solar array would look like. REA panels, which are one of our top solar panel picks, use micro inverters fitted to each panel. Inverters turn the direct current that the panels provide into alternating current which your home ring main uses. Many setups use one centralised inverter and they usually require a certain amount of power to get going, meaning that some setups can't make use of low light conditions to generate power. REA says that its micro inverters, fitted to every panel, are more efficient in generating power on darker days. It also means that an inverter failure does not affect the rest of the array. The inverters will also benefit from the guarantee the panels get: 25 years. The panels are double sided so sunlight can be absorbed on both sides. You may ask: When it will be fitted to the roof, why bother? Well, some light will pass through the panel, reflect off your roof and enter through the back. Panels with this feature can generate up to 20 per cent more energy. Engineered in Australia, the manufacturers say these cells are built to last and they top our chart for efficiency and degradation. They also have a minimalist all-black design, which is useful if you want to keep your solar installation low-profile. REA says its cells also have separate zones which mean that less power is lost should part of the array end up in the shade from trees, clouds or other buildings. And they make use of lower AC voltage for safety reasons. REA panels are quite expensive, though. Best for solar subscriptions: Sunsave Price for a typical three-bed house: £95/month including all equipment, fitting, insurance, downtime cover and a 20 year guarantee. The price is fixed for 20 years. Customers can pay off the loan early if they choose. This includes a battery pack. Area covered: England and Wales Typical time from inquiry to installation: 6-8 weeks now, but aiming for 3-4 weeks Founded: 2022 Sunsave differs from the other installers on this list in that it offers a long-term 20-year loan on your solar system, meaning there is no up-front cost. The company says that some users could save a third off their electricity bill from day one. The setup comes with a battery, so you will get the most use out of the power you generate, so long as everything is set up to maximise solar use. The interest rate is very low, at 3.3 per cent per year, making it comparable to a mortgage rate. Sunsave offers free replacements for parts such as batteries and inverters, which may come to the end of their working lives before solar panels do. The company says: 'Under the Sunsave Guarantee, whether in warranty or not, we'll replace any equipment that isn't working to a suitable level of performance – so the customer has peace of mind their system will be working to at least the projected levels for at least 20 years.' This is a good option if you want solar, use plenty of power and have loads of roof space, but would prefer to borrow to fund the purchase. The length of the loan means you'll probably also need to be planning on staying in your home for a long time, although Sunsave says the loan can be transferred to a new owner. You'll also want to make the most of any power you sell back to the grid, snagging the best deals for exporting. Adding interest payments to the mix theoretically lengthens the time it takes to break even on the equipment. With other suppliers, when paying upfront it can take anywhere from five to 13 years or even more to break even, depending on the size of your array, your energy usage – both the volume and when in the day – and future electricity prices over the next few decades. But with so many variables to factor in, you may decide a fixed period of 20 years is a fair deal if you save a little money during that period and get free electricity after that. Pros No upfront payment, fixed monthly price Everything is covered for 20 years Claimed savings from day one Free electricity after 20 years Cons More expensive overall because of the loan If you move house, will your buyer take on the monthly payment? Best for long warranty: Project Solar UK Guarantee length: 10 years workmanship Area covered: England and Wales, excluding London Typical time from inquiry to installation: Around 2-3 weeks from order to install Founded: 2011 Project Solar has also been around since 2011, making it the joint longest-running solar installation firm. The company has served more than 45,000 customers since launching. The firm is based in Burton-on-Trent but covers Wales and England, except for London. Project Solar's big selling point is that it offers a lengthy 10-year warranty for its work. Generally, most problems will crop up in a year or two after the weather has had a proper chance to put your panels through their paces. But the extra coverage on what is a multi-decade investment could prove attractive to some buyers. The firm uses Evolution Evo panels, which output a healthy 480-490 watts apiece, and can be installed within a day, 90 per cent of the time Project Solar is accredited by Flexi-Orb and it offers a full survey before quoting to avoid cost increases as work gets underway. As with others, ground-mount installations are offered, which are cheaper but will eat up land, making it less useful for other things. Reviewers liked the speed of the work and the punctuality and professionalism of the installers. One thing to note is that 10 per cent of the online reviews are one star, although 80 per cent are five star. Other fitters have fewer unhappy reviews. Pros Long warranty Cons Some bad reviews, but few compared to five-star ones How we chose the best solar panel installers We compared price, warranty and customer satisfaction to choose the best solar panel fitters. We also chose fitters that have broad national coverage. There are about 4,000 companies or traders who fit solar panels in the UK, so there is plenty of choice and you may find a trusted operator in your area that did not make the list. Which solar panel system should I pick? Only pick reputable companies that have accreditation with schemes like MCS or Flexi-Orb. It's also worth looking out for other scheme memberships like the government-backed TrustMark, the Energy Performance Validation Scheme (EPVS), the National Inspection Council for Electrical Installation Contracting (NICEIC) or the Home Insulation and Energy Systems Contractors Scheme (HIES). Companies that have good reviews and a long track record are also good choices – being national is not necessarily an indicator of quality. Can any electrician fit a solar panel system? No. Solar panel systems are highly specialist and, because they work with high voltages, can be dangerous if incorrectly installed. You'll need a qualified and certified electrician to install and connect your new panels to your home and the national grid. For the same reason, you won't be able to fit them yourself either.
The Independent
05-04-2025
- Business
- The Independent
Best solar panels in the UK 2025
The solar panel market is a competitive one, with plenty of unfamiliar brands offering fairly similar products. We've put together this guide to help guide you through the best choices. We have chosen the DMEGC Infinity as our top pick because of its combination of good price and long life. Most panels are guaranteed for 25 years and offer similar power output, size, efficiency and looks. So most of our judgement is weighted towards cost and degradation, which describes how much power the cells will provide after a number of years. The higher the percentage, the better. Much of your decision will depend on which installers you choose to go with, as they will have brands they prefer to buy from, if only to make use of bulk purchasing. As you do your research, you will see a lot of Chinese names you might not be familiar with. But a number of these are big brands in the clean energy world, with good track records of quality and durability, as we shall see below. Most panels have a life span of at least 30 years, and if you are going to the trouble of putting up scaffolding and having them installed on your roof, then these are the ones to go for since installation is usually the largest part of the cost of solar panels. You won't want to have to replace them in a hurry. A boom in commercial panels used in solar farms, which power up to five per cent of the UK grid, means that the technology has come on leaps and bounds in recent years as more money is poured into developing solar panels that are cheaper to buy. When choosing the best solar panel, it's good to weigh up the full cost of solar panel installation as well as the panel cost itself, since you'll probably need to pay for fitting the purchase of other equipment to connect your shiny new panels to your home electricity mains. Best solar panels at a glance Panel Price, installed Efficiency Wattage per panel Type Made in Degradation Warranty DMEGC Infinity £795 to £1,195 per kW 23 per cent 440-460W N-Type China and Indonesia 87.4 per cent after 30 years 25 years REA Fusion2 Solar Panel £900 - £1000 per kW 24 per cent 450W N-Type Australia 90.3 per cent after 30 years 25 years Perlight Black Grid £895 to £1,195 per kW 26 per cent 500W N-Type China 87.4 per cent after 30 years 30 years Aiko Neostar £1250 per kW 23 per cent 460W N-Type China 88.90 per cent after 30 years 25 years Jinko Tiger £1250 per kW 22 per cent 440W N-Type China, Malaysia, US, Vietnam 87.4 per cent after 30 years 25 years Best solar panel overall: DMEGC Infinity China's DMEGC, part of the Hengdian Group conglomerate, could be the biggest energy company you've never heard of. It's shipped more than 50 gigawatts of solar panels since its founding in 1980. That's a lot – the UK's average power demand last year was about 30GW. It is one of the earliest solar panel manufacturers and this long track record means it has plenty of experience in making a quality product. The company also walks the walk when it comes to green energy. Last year, it revealed three of its manufacturing bases in China were certified by testing firm TUV SUD as using 100 per cent green energy. DMEGC aims to be carbon neutral by 2050. DMEGC is also considered a Tier-1 manufacturer, an industry term for the biggest and longest-running solar panel makers, which have solid financial strength. The status is not a be-all and end-all for solar panel buyers but does indicate that a company has a good chance of honouring its guarantees and that its manufacturing processes are solid, which is useful bearing in mind how long the panels need to last. This solar panel provides a good compromise between power output, long warranty and decent power longevity, offering more than 87 per cent of its box-fresh output after 30 years. The model can also come in at the lower end of the cost for solar panels, depending on the fitting cost. This combination of lower price and long life makes it our top pick. Other features include anti-glare coatings, which mean the panels are less likely to annoy neighbours or passers by. This could be important if you live in a valley with roads coming in from above the property and you don't want to dazzle drivers on sunny days. Even if this is not a concern, panels which reflect light are not using it for power, which is to be avoided. As with other panels on the list, the manufacturer boasts they have good performance in low light conditions – useful for gloomier winter days – and a top safety record. They can also perform well if temperatures rise above 25 degrees centigrade. The panels have fairly typical dimensions of 1.76m by 1.13m with a depth of 3cm. They weigh 24.5kg apiece. Pricing will vary, but as with other reviews, we include an average cost for the panels when installed. The biggest cost is for installation, so don't focus too much on the cost of panels alone. Instead, consider the overall cost. Pros: Cons: There are cells with better degradation, topping 90 per cent There are cells with better efficiency Being able to trust in the longevity of a company that has been around as long as DMEGC, their skills in electrical manufacturing and as a Tier-1 solar manufacturer, gives us peace of mind that we are supplying our customers with quality Paul Evans, head of renewables at solar panel fitter Glow Green Best solar panel for quality: REA Fusion 2 Solar Panel Price, installed: £900 - £1000 per kW Efficiency: 24 per cent Wattage per panel: 450W Type: N-Type Made in: Australia Degradation: 90.3 per cent after 30 years Warranty: 25 years for the product itself, 30 years for the degradation figure This is our choice for the best solar panel for efficiency and maintaining power over the long run. REA Power is a smaller company, based in Australia, making it an unusual entrant in a list dominated by Chinese brands. REA panels can use micro inverters fitted to each panel. Inverters turn the direct current that the panels provide into alternating current which your home ring main uses. Many setups use one centralised inverter and they usually require a certain amount of power to get going, meaning that some setups can't make use of low light conditions to generate power. REA says that its micro inverters, fitted to every panel, are more efficient in generating power on darker days. It also means that an inverter failure does not affect the rest of the array. The inverters will also benefit from the guarantee the panels get – 25 years. The panels are double sided – sunlight can be absorbed on both sides. When it will be fitted to your roof, why bother? Well, some light will pass through the panel, reflect off your roof and enter through the back. Panels with this feature can generate up to 20 per cent more energy. The company also sponsors various initiatives including a solar recycling scheme, which aims to fix old panels and keep them working rather than being sent to landfill. If you are having solar panels fitted, they are probably going on your roof, so you will need scaffolding and specialists to come along to put them there. Therefore, you may want the best in an effort to avoid having to foot repair bills or replacement costs. You may also want the maximum power available for a smaller roof. Engineered in Australia, the manufacturers say these cells are built to last and they top our chart for efficiency and degradation. They also have a minimalist all-black design, which is useful if you want to keep your solar installation low-profile. REA says its cells also have separate zones which means that less power is lost should part of the array end up in the share from trees, clouds or other buildings. And they make use of lower AC voltage for safety reasons. Due to expense these panels do not snag the top spot in our list, but if you are happy with the price they are a good choice. The panels measure 1.72m by 1.13m and are 3cm thick. They weigh 24kg each. Pros: Cons: Expensive REA Fusion panels combine advanced N-Type and HJT cell technologies, offering the best of both worlds: N-Type cells minimise long-term efficiency degradation, while HJT (Heterojunction Technology) enhances performance in low-light conditions. This powerful combination makes the Fusion 2 the go-to choice for the UK market – delivering maximum generation, even in our famously gloomy climate David Simmonds, Head of Solar at solar panel fitter Heatable Best for long warranty: Perlight Black Grid Price, installed: £895 to £1,195 per kW Efficiency: 26 per cent Wattage per panel: 500W Type: N-Type Made in: China Degradation: 87.4 per cent after 30 years Warranty: 30 years Perlight is another Chinese maker of solar panels, starting life in 2006. These panels are an excellent choice for those wanting a long warranty – the company offers 30 years compared to the usual 25. This extended guarantee could give you more comfort if you expect to have to pay the panels off over a long period of time or you simply want to leave them there for as long as possible, which bearing in mind the fitting cost could be a good idea. On the other hand, you could take the view that a panel lasting 25 years will probably go the extra distance without the guarantee. The model also offers better efficiency and a higher wattage than the other panels on our list. The only thing letting it down is its somewhat pedestrian degradation figure, otherwise it would be further up our ranking. The company is also somewhat shy about filing facts about itself compared to its competitors, although it passes all the necessary regulatory hurdles. The panels do offer a higher wattage and will continue pumping out 87 per cent of their factory-fresh power after 30 years, making it a very good choice. Like REA, Perlight is not a Tier-1 manufacturer. But it has a long track record, meaning you should expect good performance for years to come, and it ships to 100 countries. The panels also have high pressure resistance, meaning the should be able to withstand the bumps, bangs and weather that 30 years on a roof will throw at them. Like nearly every panel on this list, these are made in China. The Chinese government has thrown many subsidies at clean power companies in recent years. This means that the last 20 years has seen a boom in Chinese solar panel making. The country now has a massive technological advantage over other nations, as well as a large manufacturing base. Panel making eats up a lot of silicon, and China has a big silicon refining industry, which also helps firms make panels cheaply there. Since 2000, solar panels themselves have fallen in price per unit of power output by about 90 per cent because of technological leaps in their efficiency, largely in China. But fitting costs have risen in line with wages and other inflationary pressures since then, so bear this in mind when looking at prices. The panels will be cheaper, but labour and scaffolding less so. Cons: A 30-year product warranty is hard to come by in any product but Perlight offers one of the longest warranties available in the market Paul Evans, head of renewables at solar panel fitter Glow Green Best for higher wattage per panel: Aiko Neostar China has invested billions of pounds into making cheap solar cells, and the country's Aiko Neostar range offers amongst the best power output, as well as a long warranty and very respectable efficiency. Aiko is another of those Tier-1 manufacturers we heard about earlier. Being Tier-1 means that Bloomberg New Energy Finance has determined that a company's longevity, financial ,strength and manufacturing processes make it a good financial bet. For consumers, this suggests that the company you are buying from is likely to be a quality one, but it doesn't mean you should ignore other manufacturers who may have newer products or simply don't belong to a public company. Aiko was founded in 2009 and has six manufacturing plants in China as well as a research and development hub in Freiberg in Germany. It has shipped more than 150 gigawatts of panels since it was founded. It is a big supplier to China's large domestic solar industry, having this year snagged a 1 gigawatt contract to build three solar farms in the south, east and north of the country. The Neostar also has the best output in our test, which makes the panels a good choice if roof space is at a premium. Like the other panels in this list, the product uses N-type cells, which offer very slow degradation, and thus a nice long life. The company claims that its cells have something called cell-level partial shade optimisation in order to deliver more power in partially shaded conditions. This, or a similar technology, is useful even if no trees are near your house – over the course of 30 years you can never be quite sure how your local skyline will change. The company also says they have micro-crack resistance. In other words, they are tough. Over their lives, small branches from trees, hail and other detritus will strike the panels, together with the regular wind and rain Britain endures, so durability is important. With an all-black design, they are also among the most aesthetically pleasing solar panels and maintain 89 per cent of their power after 30 years, which is towards the top of our list. As with the other panels we reviewed, a 25 year guarantee is the standard. These panels are somewhat lighter than the others, at 21.5kg each, which may appeal if you have a more fragile roof. They measure 1.76m by 1.13m and are 3cm thick. Cons: With new generation ABC (All Back Contact) technology, Aiko Neostar panels supply excellent efficiency, and their entirely black design is aesthetically pleasing and looks great on any rooftop. They represent a premium option built for homeowners in search of the latest in tech and the best performance from a small-scale system Edward McKay at fitter Solar4Good Best for high output in weak light conditions: Jinko Tiger Founded in 2006, Jinko has grown to be another vast Chinese player in solar panels, with a decent track record of success. Again, the long warranty, slow ageing rate and good power output make this a good all-round choice. Jinko is a Tier-1 manufacturer, meaning it has been around for more than five years, it is in a strong financial position, and it automates its panel making. This is a useful guide on a company's financial strength, but as a consumer rather than an investor, you may have other priorities. The company is listed on the New York Stock Exchange, which means it publishes quite a bit more about itself than the other firms. It also invests in solar projects themselves, owning a 20 per cent stake in a 2 gigawatt solar project in the United Arab Emirates, one of the world's largest plants. Jinko is also part of the so-called Solar Module Super League, a group of seven firms which made up about half the world's solar panel making capacity. For the panels themselves, the stats are fairly middle of the road compared to others on our list, but as you can see from the summary towards the top of the page, all our featured panels have good warranties, power output, efficiency and useable lifespan. You can take a lot of comfort from Jinko's huge size and comparably long track record, approaching 20 years in the market. So if your favourite fitting firm only stocks these panels, fear not, you are still likely to have lower bills for years to come. A bit like flat panel TVs, intense competition in the solar panel market means the products are getting cheaper, but with high standards in manufacturing among the biggest players, of which Jinko is one. The manufacturer says that the panels offer good output in weak light conditions, which is a key feature in the UK, not just for gloomy days but also dawn and dusk. It uses N-type cells, which offer slow degradation, which is important if you want to fit cells to a roof and not have to replace them for a very long time. The panels also feature good resistance to salt, which could be important if you live near the coast and need that extra protection. The panels weigh in at 22kg, a shade lighter than most, and measure 1.76m by 1.13m. They are 3cm thick. Pros: Cons: Jinko Tiger panels deliver reliability and performance with robustness and high energy output in weak light conditions. They're a great choice for customers who want quality, affordability, and performance from one of the best solar manufacturers in the world Edward McKay at fitter Solar4Good Methodology We based our judgement on a number of factors largely weighted towards price and lifespan. We spoke to solar fitters and UK experts to draw our conclusions. The efficiency of most of the panels is very similar and they tend to come in similar sizes and with similar warranties, apart from the 30 years offered by Perlight. Longevity is our top concern. The outlay to install the panels is large, so they must last. The cells' longevity can be measured in two ways: the expected lifespan, which is often 25-30 years, and the degradation figure, which tells us how much power we get as the cells age. After longevity, price is a key metric: the lower, the better Then, we look at warranty and efficiency, which can often be similar, together with power output After that, we weigh concerns such as looks, how long the manufacturer has existed and other matters Our top choice is the DMEGC Infinity for its balance of price and performance. Many of the Chinese brands are similarly priced with similar lifespan characteristics. Why trust us The Independent has been reporting on green energy and climate matters since it was founded in 1986. Since then, we have written hundreds of reviews and news stories on energy matters, including the best solar panels, the best solar installers and various other guides on green power. What happens when you get a quote through us After you have filled out our form above, you will receive three quotes from solar fitting companies local to you. They may be able to quote based on the information you have given them, or they may need more information, or to visit your home. Once you have these quotes, you can decide if you wish to proceed. FAQs Which type of solar panels are the best? For most buyers fitting the panels to a roof, the most modern type of panel, N-Type, is a good bet since it will last a long time. PERC solar panels, an older design, will be cheaper but may be guaranteed for just 10 years. That makes them suitable for easier installations, such as ground level or accessible roofs, but not installations which require expensive fitting. What are Tier 1 solar panels? You may have read the phrase Tier 1 associated with solar panels. It refers to tiers of manufacturers, based on their financial stability and their track record of making high-quality panels. To be seen as a Tier 1 manufacturer, panels should be made in-house and a track record of at least five years is generally needed. It is a good indicator that a panel maker is high quality, but it is not the be-all and end-all since factors which matter little to buyers such as the quality of a manufacturer's accounting practices form part of the criteria. Aiko, Jinko and DMEGC are all Tier-1 firms. Yes and no. There are big brands in solar panel making such as Sharp, but it stopped selling panels to European countries this year. The most important thing is to choose a brand with a good history. All our makers featured in this guide have been around for at least 15 years and up to 45 years.
