The Guide to Purchasing Green Power is intended for organizations that are considering the merits of buying green power as well as those that have decided to buy it and want help doing so. The Guide was written for a broad audience, including businesses, government agencies, universities, and all organizations wanting to diversify their energy supply and to reduce the environmental impact of their electricity use. The Guide provides an overview of green power markets and describes the necessary steps to buying green power. This section summarizes the Guide to help readers find the information they need.