The Gradia Solare's roof is covered with photovoltaics, 1530 watts per apartment plus some surplus for the common areas. It appears that the solar panels are owned and managed by an outside company for fifteen years and then transferred to the Condo corporation, which probably keeps the upfront costs out of the sale price of the units. The building is full of features, including "Eco-cute" combo heat pumps for domestic water and heating, high efficiency appliances and filtered ventilation air. Various technologies are supposed to "reduce carbon dioxide emissions equivalent to the amount absorbed by approximately 4,200 cedar trees"- They could plant some more instead of that sea of asphalt around the building.
