Solar Thermal

Many people believe that solar collectors only work in the summer, however this type of free energy is available throughout the year. From May to September, solar thermal could produce 100% of the energy required for heating your domestic water (see below). Grant collectors operate not just with direct sunlight, but also diffused sunlight, so they even work on cloudy days. On average Grant Solar can provide up to 70% of your hot water needs per year, for free!

Solar irradiation in the UK and Ireland This diagram shows the total average solar radiation falling on 1m2 surface, inclined at 30° to the horizontal, measured in kilowatthours. The average property requires approximately3,000 kWh per year for domestic water heating.


GRANT Solar Thermal

Quality Design

There is never a compromise on quality. We design all of our products so that you can be sure that the durability and efficiency are sector leading. We continually develop new technologies and use only the best materials to ensure our products exceed all performance and environmental standards.

Grant Guarantee

The Grant label is a guarantee of reliability, quality and value. We put our customers first and our independence ensures that we can monitor our standards and processes to deliver the very best quality and service.

Heating Responsibly

Grant manufacture heating systems that respond to the challenges of rising fuel costs whilst protecting our environment. Environmental responsibility is central to all we do and we continue to develop and innovate to produce even more efficient products that make best use of our natural resources.

Available on the Green Homes Grants | Apply Today

Head to our Green Homes Grant page to see if we offer Surveys in your are. If so we will come out for free to provide your with quotations on the measures you are eligible for. Dont worry! If we don’t offer physical surveys in your local area, you can fill out a self assessment form to recieve your tailor-made Green Homes Grant Quotation via email.

WORCESTER Solar Thermal


A typical solar thermal system should provide 50-70% of the domestic hot water requirements at home.

Strength Building

Fibre glass frames, Solar safety glass and Plastic corner pieces for ultimate strength.

Mind & Soul

Worcester panels form part of a system which remains separate from the boiler heating system.

Relax & Refresh

Take advantage of renewable and sustainable energy with solar thermal panels.

Just for You

Panels can be mounted onto sloping roofs with a variety or onto a frame for flat roofs.

Integrate & Save

When used together, a Greenstar boiler and solar thermal system provide highly efficient hot water.

Why Solar Thermal?

Solar thermal is a clean and sustainable method of providing homes with hot water. As with all Grant products the technology is simple but highly efficient, providing an environmentally responsible and cost effective alternative to traditional energy sources. The basic principle is easy to explain. If you leave a garden hose on the ground exposed to the sun, in a short time the water within will become hot. Solar thermal collectors work in very much the same way, only more efficiently. Roof-mounted solar collectors are connected to a system containing a special glycol/water solution. This heated fluid is circulated from the panel to a cylinder where the heat is transferred to produce hot water. Typically, a solar thermal system can save you up to 70% on your annual hot water heating costs – so it’s good for the planet and good for your wallet too!

Ready to Make a Change?

Contact us today to discuss your options. Alternatively, head to our Green Homes Grant page to book your appointment with QERB Energy Online.