What is the fine-grained topic of the following text: A single installation of the company’s SolarWindow™ technology is calculated to avoid 2.2 million miles of vehicle pollution, at least 12-times more than today’s solar systems on building rooftops; and could reduce carbon emissions equivalent to 770 acres of forest, compared to today’s rooftop (PV) systems equivalent to only 20 to 70 acres of forest, according to engineers. Only return the topic.
SolarWindow™ technology's environmental impact