Chapter One provides an introduction to the SunShot Vision Study, produced by the Department of Energy's Solar Energy Technologies Program. The chapter begins by providing basic information about solar energy technologies and the status and potential of solar energy in the United States. Next, the SunShot scenario and analysis methodology are summarized, and several electric-sector impacts of achieving the SunShot targets are discussed. Finally, potential barriers to realizing the level of solar market penetration envisioned in the SunShot scenario—and strategies for overcoming them—are discussed.