Download or read book So You Have Questions About...Renewable Portfolio Standards: Resources & Technical Assistance (Postcard) written by and published by . This book was released on 2014 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: States sometimes design an RPS to drive a particular technology by providing 'carve out' provisions that mandate a certain percentage of electricity generated comes from a particular technology (e.g., solar). RPS policies have been designed in many ways, and a variety of research has been published that characterizes current and best practices.