Number: RL34116
Title: Renewable Energy Portfolio Standard (RPS): Background and Debate Over a National Requirement
Authors: Fred Sissine, Resources, Science, and Industry Division 
Abstract: Under a renewable energy portfolio standard (RPS), retail electricity suppliers (electric utilities) must provide a minimum amount of electricity from renewable energy resources or purchase tradable credits that represent an equivalent amount of renewable energy production. The minimum requirement is often set as a percentage share of retail electricity sales. More than 20 states have established an RPS, with most targets ranging from 10% to 20% and most target deadlines ranging from 2010 to 2025. Most states have established tradable credits as a way to lower costs and facilitate compliance. State RPS action has provided an experience base for the design of a possible national requirement.
Pages: 14
Date: December 5, 2007