Rooftop solar, now ubiquitous in many areas throughout the world, plays an increasing role in both commercial and residential energy generation and storage. While it has a history of implementation in countries such as Germany and Australia, there has been an influx in smaller rooftop installations throughout the world. As of 2015, 20 percent of all photovoltaic (PV) capacity worldwide is smaller-scale, rooftop panel installations.
Part of the Electricity Generation sector, rooftop solar ranks #10 in Project Drawdown’s list of solutions for fighting global warming. If implemented according to their scenario results, growth from .4 percent to 7 percent of worldwide rooftop solar energy generation will net a 24.6 gigatons reduction in carbon dioxide emissions and save $3.4 trillion dollars in home energy costs by 2050.