The book "Regional Greenhouse Gas Initiative" provides a comprehensive analysis of the regional initiative aimed at reducing greenhouse gas emissions in the northeastern states of the United States. It discusses the development and implementation of a cap-and-trade program specifically designed for CO2 emissions from power plants. The initiative currently includes ten states, with Pennsylvania participating as an observer. The book highlights the mechanisms of emissions trading that have been in effect since September 2008, as well as the use of revenues to promote energy savings and renewable energy. The authors Miriam T. Timpledon, Susan F. Marseken, and Lambert M. Surhone offer informed insights into the economic and legal aspects of this significant environmental policy measure.