Let Powertec Solar Plan, Finance, and Install your Solar Panels. With over 315 sunny days a year, Winnipeg is a perfect city for solar power. Residential and commercial roof solar panels have been popular in southern states for over a decade, but up until recently the technology wasn’t available to create solar panels that were efficient enough to produce a payoff in northern locations. Over the last 5 years however, solar panels have become more efficient and have decreased in price by over 80% making them a viable and economical solution for Winnipeg residents.