What percentage of Ontario households are suitable for solar systems?
The majority of homes in Ontario are considered suitable for solar thermal or PV installations. A solar mapping project conducted by the town of Perth in Ontario found that 74% of the homes and buildings in town could be retrofitted for solar thermal. The West Toronto Initiative for Solar Energy (WISE) in Toronto found that 162 people requested home evaluations and only 14 were rated poor solar sites and even some of these were able to install solar thermal systems on the part of the roof that had good solar exposure.