A Saskatoon cathedral is the first cathedral in the world to incorporate solar energy collection into its stained glass windows. The windows all have a solar cell between the layers of glass. The largest of the three windows measures 37 feet high by 12 feet wide and all simultaneously shade the church, harvest solar energy from outside and block out heat.
The embedded solar panels are capable of generating 2,500 kilowatt hours of power each year, or about 20 per cent of the electricity used per year in the average Canadian household. However, it is likely that the power will be used by the cathedral itself.