Are There Reputable Solar Thermal System Installers in Your Area?

What Is a Solar Thermal System?

A solar thermal system captures energy from the sun to heat water for use in your home or small business. Unlike solar photovoltaic panels, which generate electricity, solar thermal panels convert sunlight directly into heat. This heat is transferred via a fluid circulating through specially coated pipes in the solar collector, usually mounted on your roof, into a hot water storage tank. The system can significantly reduce the need for conventional water heating, especially in the warmer months.

Types and Options of Solar Thermal Systems

• Flat-plate collectors: These are common in the UK and consist of a flat absorber panel beneath a glass cover. They work well in the UK climate, even on cloudy days.
• Evacuated tube collectors: These offer higher efficiency by reducing heat loss and are suitable if you want the system to perform efficiently during colder months.
• System types:
• Open loop: Fluid circulates directly through the solar collector and household water system.
• Closed loop: A heat-transfer fluid (usually antifreeze) circulates in a closed circuit, transferring heat to your water via a heat exchanger, protecting your system from freezing in winter.

Real-World Applications in the UK

Solar thermal systems are mostly used to provide domestic hot water but can also link to underfloor heating or other low-temperature space heating systems. They can supply up to 100% of hot water needs in summer, reducing reliance on gas or electric boilers and immersion heaters during this period.

The UK receives about 60% of the solar energy compared to the equator, which is sufficient for solar thermal panels to be effective, even in the frequently cloudy climate. Typical systems can reduce carbon emissions by around 230 kgCO2 per year when replacing gas heating and up to 510 kgCO2 per year when replacing electric water heating.

Recent UK Policies and Financial Incentives

• From April 2022 to March 2027, the installation of solar thermal systems in Great Britain benefits from a 0% VAT rate, significantly lowering the upfront cost.
• The government supports renewable heat technologies as part of its net-zero carbon targets, encouraging both homeowners and small businesses to consider solar thermal as a practical option.

How to Find Reputable Solar Thermal Installers in Your Area

• Search for installers certified by relevant UK standards bodies, such as the Microgeneration Certification Scheme (MCS), which ensures quality and compliance.
• Look for companies experienced in solar thermal system installation, with proven local references or case studies.
• Local renewable energy hubs or organizations often provide listings or advice on trusted installers.
• A good installer should assess your property’s suitability, tailor system design to your needs, and provide guidance on maintenance.

Practical Advice, Pros, and Cons

Pros:

• Can meet up to 100% of hot water needs during summer.
• Reduces energy bills and carbon footprint.
• Increases property value with a renewable energy system.
• Qualifies for reduced VAT on installation in the UK.

Cons:

• Initial installation cost can be high, though reduced by VAT relief.
• Performance varies with weather; backup heating needed in winter.
• Requires roof space with good sun exposure.
• Maintenance and potential replacement of hot water cylinder may be needed, especially if your current system isn’t compatible.

Common Mistakes to Avoid

• Choosing an installer without proper certification or local references.
• Not considering the necessity for a suitable hot water storage tank (often a ‘twin coil’ cylinder).
• Failing to plan for a backup heating system for cold or cloudy periods.
• Poor sizing of the system, which can reduce cost-effectiveness and performance.

---

Summary

Yes, there are reputable solar thermal system installers available across the UK. Choosing certified local professionals familiar with UK climate and building regulations ensures you can install a high-quality system tailored to your home or small business. These systems offer a reliable and environmentally friendly way to reduce heating costs and carbon emissions, supported by current government incentives like the 0% VAT rate on installation. Make sure to assess your property’s suitability, understand system options, and avoid common pitfalls to maximize benefits from solar thermal technology.