This paper reviews the current literature on plug-in electric vehicles (PEVs) with a focus on issues and solutions related to vehicle deployment and integration with the U.S. electrical grid. It is a companion to the Center’s “Plug-in Electric Vehicles Market: State of Play.” The subjects covered include vehicles, electricity, the passenger vehicle market, and public policy. This paper relies on the most recent research from government, private business, academia, and research institutions; peer-reviewed literature was used wherever possible. The paper’s purpose is to provide a foundation for overcoming some of the major hurdles to PEV deployment in the United States both currently and in the future.