Solar Thermal Water Heating vs Solar PV Costs & Benefits

Is solar thermal water heating the best choice for me?

Through over 18 years of experience, we have come to the conculsion that the advantages of Solar PV, more often than not far outweigh those of Solar Thermal systems.

While we can offer Solar Thermal installations, the following comparisons of a typical 4KW Solar PV system versus a Solar Thermal system with gas boiler show that in most cases, Solar PV will deliver a much higher return on your investment and save you more money:


Solar PV

Solar Thermal

Financial Incentive 20 year tax free return 7 year tax free return
Application Free electricity for any applicance, including hot water Free hot water
Installation Can be retrofitted to existing systems May require a new hot water cylinder
Average Installation Cost £5,500 - 6000 £4,000 - £5,000
Maintenance Virtually maintenance free Requires annual maintenance
Energy Bill Savings A potential combined saving of £300 per year Save approxiately £55 per year
CO2 Savings 1870kg per annum 270kg per annum

How do I know if Solar Thermal is right for me?

Request a free assessment for a solar PV or solar water heating system throughout Somerset and the South West and find out how much money you could be saving, and even earning, by reducing your carbon footprint. Give us a call, email us or fill in our enquiry form to arrange your free onsite solar PV or solar hot water assessment.

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