Welcome to The Independent’s updated Heatable solar review, offering a deep dive into one of our top picks for homeowners who want premium, high-efficiency systems when comparing the best solar panels for their home.
If you’re looking to generate your own low-cost, renewable power and you’re ready to choose an installer to fit your panels and connect them to your property, this guide will help you decide whether Heatable is the right match.
With around 4,000 solar installers operating across the UK, choice isn’t the problem — navigating it is. Most providers work regionally, which can narrow your shortlist depending on where you live.
We assessed the cost of solar panels, warranty options, and customer satisfaction scores to identify the best solar panel installers in the UK. For homeowners who want access to cutting-edge technology and top-tier panels, Heatable solar stands out as a compelling option.
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Why choose Heatable?
- Price per installed kilowatt on a standard house: A typical array of 7kW would cost £900 - £1000 per kW
- With a battery pack: £1400-£1500
- Guarantee length: 2 years workmanship warranty
- Area covered: Mainland England, Scotland & Wales
- Typical time from inquiry to installation: 2-3 weeks from network operator approval
- Founded: 2017
Heatable now installs LONGi Hi-MO X10 solar panels, a high-efficiency panel from one of the world’s largest solar manufacturers. The panel offers a 485W power output and 24 per cent efficiency. At the same time, its back-contact cell design is intended to improve performance in low-light and partially shaded conditions – both useful considerations for UK roofs.
Heatable is a Tesla Premium Partner for battery systems and has been endorsed by Which? for both solar and heating services.
The company said 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 also has one of the best online review scores, with an aggregate score of 4.8 out of 5 on Trustpilot.
Customers praise the company’s professionalism, ability to work with older properties, and strong post-installation support.
Heatable’s website includes a helpful online planning tool that uses satellite imagery to estimate how many panels your roof can hold and how much power they could generate.
We found this quite easy to use and it gave a very good indication of what a solar array would look like.
Heatable now installs LONGi Hi-MO X10 panels, a premium residential solar panel with a 485W output and efficiency of 24 per cent. That makes it a strong option for homes where roof space is limited, as each panel can generate a relatively high amount of power from a standard residential panel size.
The Hi-MO X10 uses LONGi’s HPBC 2.0 back-contact cell technology. In practical terms, this means the electrical contacts sit on the rear of the cell rather than across the front, creating a cleaner all-black appearance and allowing more of the panel surface to capture sunlight. LONGi says this design helps the panel perform well in low-light conditions, which is particularly relevant for UK homeowners dealing with cloudier days, shorter winter daylight hours and less-than-perfect roof orientations.
The panels are also designed to reduce the impact of partial shading. LONGi’s shading optimisation technology is intended to limit power loss when part of a panel is affected by shade from chimneys, trees, nearby buildings or passing clouds. That doesn’t mean shading stops mattering – roof suitability is still crucial – but it should help the system maintain steadier output in real-world conditions.
LONGi’s warranty is another notable feature. The Hi-MO X10 comes with a 30-year performance warranty, with a minimum guaranteed retained output of 88.85 per cent after 30 years. The panel’s degradation rate is listed as less than 1 per cent in the first year, followed by 0.35 per cent per year from years two to 30. Its temperature coefficient of -0.26 per cent per °C also means output should fall less sharply on hotter days than it would with some less efficient panels.
Aesthetically, the LONGi panel keeps the low-profile look that many homeowners want from a rooftop solar installation. Its zero-busbar, all-black design gives it a simpler, more uniform appearance, which may be a plus if the visual impact of solar panels is one of your concerns.
How much do Heatable solar panels cost?
Heatable’s pricing is based on the size of your system and the specifications of your property, so final costs can vary from home to home. However, the company has provided indicative figures that offer a useful starting point for budgeting.
For a standard residential installation, Heatable estimates £900–£1,000 per installed kilowatt (kW). Using that range, a typical 7kW system – suitable for a medium-to-large household with good roof space – would usually fall between £6,300 and £7,000.
It’s important to treat these numbers as guidance rather than fixed prices. The total cost of solar panels depends on factors such as:
- Your roof type and structural complexity
- Whether scaffolding is required
- The panel model and inverter you choose
- Cable runs and electrical work are needed
- Optional extras such as batteries or optimisers
For this reason, Heatable provides tailored quotes following a remote survey of your property. If your priority is getting access to premium, high-efficiency panels at competitive pricing, their per-kW range can be a useful benchmark when comparing installers.
While Heatable solar panels are more expensive than some alternatives, the technology and efficiency may justify the price for customers who want the best performance and longevity from their solar investment.
What are the Pros of using Heatable solar panels?
- Excellent customer reviews
- Access to LONGi Hi-MO X10 high-end solar panels
- Tesla Premium Partner
- User-friendly online design tool
- Strong warranties on equipment
What are the Cons of using Heatable solar panels?
- Higher upfront cost due to premium panels
- Only a two-year workmanship warranty
How we tested
Our Heatable solar review is based on a structured, independent assessment of how the company compares within the wider UK solar market. Because we did not purchase a system or commission an installation directly, our evaluation focuses on the factors that matter most to homeowners researching solar panel providers.
To build a clear picture of Heatable’s offering, we:
- Spoke directly with the company to understand its product range, installation process, customer support approach, and access to high-efficiency panels.
- Reviewed pricing against the wider market, using publicly available data, customer quotes shared with us, and benchmarks from leading UK installers to compare the cost of solar panels offered by Heatable.
- Analysed warranty terms and equipment quality, including panel efficiency ratings, inverter options, and long-term guarantees.
- Assessed customer satisfaction, drawing on verified reviews, industry feedback, and publicly shared case studies.
- Compared Heatable with regional and national installers, evaluating availability, turnaround times, and access to cutting-edge technology.
This multi-source approach allows us to provide an impartial assessment of where Heatable sits in the market and who it’s best suited for.
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