The cost to install solar has dropped by more than 70 percent in the last decade, with prices in Q3 of 2020 hitting the lowest levels ever recorded. Yet many still believe that solar is only a luxury item for green-minded consumers, rather than a long term cost-saving investment. Why is this? A big reason is the lack of easily accessible information about how solar can save you money. Like EnergySage, Google’s Project Sunroof looks to fix this using smart technology.