This article begins by defining the “vehicle-to-grid” concept for a legal readership, and places it in context by discussing some major problems facing the United States electrical grid. There are several ways in which the vehicle-to-grid concept may potentially mitigate the grid’s problems as are described. Then, the article discusses the major legal and regulatory impediments to implementing a vehicle-to-grid program. Several of the hurdles are simply manifestations of uncertainties in the business environment. Others are more properly legal and regulatory impediments, but are expected to be surmountable. Therefore, the Article concludes that legal and regulatory impediments will not likely hinder the adoption of vehicle-to-grid programs.