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This paper focuses on the role of electricity markets and renewable energy regulation in wind development across the United States. My findings, using a random effects Tobit model with a 25-state sample, from 1994-2008, indicate that the implementation of state Renewables Portfolio Standards (RPS), Green Power Purchase programs (GPP), and the Federal Production Tax Credit (PTC) positively influenced a state’s added wind capacity. The influence of GPP programs continued to increase in the years after implementation, while for RPS it diminished. Also, other programs such as State Loan and Grant programs directed at increasing renewable energy development have not had a significant impact on wind capacity. The role of market factors is less significant, although there is some evidence that increases in natural gas prices had a positive influence.


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