U.S. states have led the federal government in instituting policies aimed at promoting renewable energy. Nearly all research on renewable portfolio standards (RPSs) has treated RPS adoption as a binary choice. Given the substantial variation in the renewable energy goals established by RPSs, we propose a new measure of RPS ambition that accounts for the amount of additional renewable energy production needed to reach the RPS goal and the number of years allotted to reach the standard. By measuring RPS policy with more precision, our analysis demonstrates that many factors found to affect whether a state will adopt an RPS do not exert a similar effect on the policy’s ambitiousness. Most notably, our analysis demonstrates that Democratic control of the state legislature is the most consequential factor in determining the ambitiousness of state RPS policies.
Energy transitions are fiercely contested. The incumbents of the fossil-and nuclear-based energy systems have much to lose from a transition to a sustainable and decentralized energy system. They therefore employ their material and political resources to reverse, halt, or slow down this transition. They also attempt to stop and reverse the decentralization of energy production. This article provides a framework that can be used to analyze the contestation that surrounds energy transitions. The analytical framework breaks apart the macro paths of energy transitions, and differentiates between three meso-paths (political, economic-technological, and legitimation), emphasizes the feedback processes between these paths, and acknowledges the crucial role that actors play in engendering these feedback processes. It uses Germany as a case study to illustrate the analytical model. It also provides hypotheses that will be tested in the subsequent contributions to this special issue.
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