The Department of Energy (DOE) SunShot Program has a specific goal: to move the cost of solar-energy-generated electricity to be competitive, without subsidies, with the cost of fossil-fuel-generated electricity by 2020.
In service to that, it supports research in every dimension of both photovoltaic (PV) solar and concentrating solar power (CSP) along the entire gamut from basic to applied science. DOE calls SunShot “the Apollo Mission of our time.”