The objectives of this white paper were to: assess the current state of the art in renewable generation (solar and wind) forecasting tools, including their various components, reliability, shortcomings, and the current research efforts to improve these tools; determine the specific requirements of the California end-users of the technology, including the CAISO and the California utilities, for effective management of renewable resources as California strives to achieve 33% renewable penetration by 2020 in accordance with the state’s Renewable Portfolio Standard (RPS); and determine the renewable forecasting technology gaps that will exist by 2020, and identify the research efforts necessary to address those gaps. This white paper is intended to provide information that will help target future solicitations for research toward applications that will help California better reach its near-term renewable energy goals.