” However, there’s more to photovoltaics, i.e. the conversion of solar power to direct current (DC) electricity, than just the size of the solar cells. Distance is a lesser known factor in solar power generation. In the summer time when the sun is more direct we get better solar energy in Vancouver area.
Luckily, you don’t need to be as close to the Sun as the planet Mercury to get the most out of the Sun’s energy. Experts believe that solar energy amounting to 1 kW per square meter on Earth is more than enough to power the planet.”
http://terratek.ca/news/post/solar_power_in_vancouver_making_the_switch_to_sustainable_energy/
Terratek 