EnerGlaze Solar water heating systems produce hot water using free power from the sun without creating carbon dioxide or any other greenhouse gas and create no pollution. They produce energy from renewable sources without using scarce fossil fuels and are cost effective. They work all the year round, even in Ireland, so that in all forms of daylight there will be some contribution from a well-designed thermal solar system. Direct sunlight is not needed although EnerGlaze Solar water heating systems work more quickly in very strong light.
If there is not enough solar energy to fully power the EnerGlaze Solar water heating system, which may happen from time to time on exceptionally dark days or during heavy snow, you may need to use your immersion system as a back up.