This study evaluates Pennsylvania’s Alternative Energy Portfolio Standard and its effect on promoting the development of new, utility-scale electricity generators fueled by alternative sources. The energy profile of Pennsylvania for 2005 and 2006 is determined from the Generation Attribute Tracking System, which tracks the creation of compliance credits according to the policy guidelines. The future energy profile is projected from the PJM Interconnection Queue, which lists the proposed future generating plants in the state. The forecast for electricity use in Pennsylvania is derived from the Energy Information Administration’s 2007 Energy Outlook. The study shows that the Tier II goals of the policy are currently met, with no need for further developments. The study predicts that Tier I and solar PV developments will fall short of the policy goals. Compatible Tier I technologies are profiled, and recommendations are made to meet future compliance.