This map is based on 30+ years of solar data collected from 235 weather stations across Canada. (The grey points in the map)
It gives the annual energy yield in kWh of a 1 kWp PV solar system installed on a vertical axis tracker (VAT) set at the optimum tilt angle.
The results are corrected for the temperature and low irradiation (PV Modules are more efficient in low temperature and less efficient in low irradiation level)
A VAT system follows the sun azimuth (rotate from east to west) and the second most efficient mounting system. VATs produce about 4 to 5% less energy than 2-axis trackers but have simpler mechanisms and are cheaper to fabricate. Our program calculated the optimum angle for a particular location, therefore, the map shows the maximum energy yield achievable by 1 kW modules on a VAT under real conditions of temperature and irradiation.