A business case has been made for corporations to procure renewable energy, and Fortune 500 companies and others have set targets for procurement of renewable energy, energy efficiency and greenhouse gas emissions reduction. This report guides companies through the opportunities that power purchase agreements (PPAs) offer in relation to these targets. It also addresses the obstacles corporate buyers and developers face as they plan and negotiate PPAs, and the authors propose solutions for corporate buyers and developers. The report takes a global approach, highlighting countries that present the best potential for corporate renewables, such as Chile and Argentina or India.