To my fellow Canadians... Have any of you purchased the Tesla Solar Roof tiles and Powerwall? If so, can you talk a bit about cost and the amount of energy they produce? Have you become self sufficient in supplying your own energy? Do you have excess and if so, do you sell it back to the grid? How much effect does the weather have on energy production? Cloudy rainy days vs. bright sunshine? Does snowfall effect the roof? If so, how? I have been thinking about this idea but for some reason I have a belief (not based on any actual knowledge) that Ontario would not be an ideal location for a Solar Roof. Again, that isn't based on anything than an assumption, so I'd love to hear about your experiences, especially for those who live in Southern Ontario.