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Since 2009 , SunTap customers have generated over 480 MWh
of energy, equivalent to enough electricity to power
more than 50 homes
for a year.

Over 60 tonnes of carbon dioxide
have been avoided by using renewable energy, making our air healthier and safer to breathe.

Over 1347 ML of fresh water have been conserved by using renewable energy, leaving it available for all beings to enjoy.



Solar education

What are the different types of solar?

There are two basic types of solar collectors: solar thermal and solar photovoltaic.

Solar thermal (ST) collectors absorb heat energy from the sun for the purpose of heating water for household use, for pool heating, and for space heating.
Photovoltaic (PV) collectors absorb light energy from the sun for the generation of electricity. The power generated can be fed back into the main electrical grid, or be used as a self-contained system with batteries.

What type of solar is the best?

The best type of solar is whatever is best suited to your house or building (click on the links to learn more):

  • Most people who heat their pool using natural gas or electricity will spend more money doing so than they do on heating hot water in the home - a solar pool heater would be best in this case.

  • Having a roof surface that faces directly south with no shading is optimal for any type of solar, but a PV system under the Feed-In Tariff (FIT) program will generate the best return on investment.

  • A household or a business that constantly uses a lot of hot water is best off with a solar water heater.

Is there enough sunlight in Ontario to justify going solar?

The amount of energy generated by a solar system depends on the amount of solar radiation that reaches the solar collectors - this value is called solar insolation. Insolation is primarily affected by your geographic location, but changes based on seasonal weather patterns, smog, and other factors. In London and area, we receive in a day, on average, 4.2 kWh/ (facing due south at a tilt angle equal to latitude). Berlin, Germany and Tokyo, Japan are two of the leading cities in the world for installed solar capacity, and their daily average insolation values are 2.6 kWh/ and 3.7 kWh/, respectively. If Germany and Japan can do it, Ontario can, too!

Should I be making energy or saving energy?

As noted by the Environmental Commissioner of Ontario in the article What's a Negawatt Worth?, conserving energy is much more cost efficient than generating energy. The amount of energy generated by a solar water-heating system in a year (around 3000 kWh) means that much energy does not need to be generated in the first place, meaning a reduced need for power plants fuelled by nuclear or fossil fuels.

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