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Globally, decentralized energy systems are gaining popularity due to their potential for energy accessibility, energy resilience, and sustainability benefits. Existing research on an energy system decentralization approach, community choice aggregation (CCA), shows its ability to lower energy costs and increase renewable electricity consumption for U.S. communities. Nevertheless, research on the relationship between CCA and distributed electricity generation development is lacking. This paper fills this gap by investigating if the CCA approach associates with distributed generation capacity interconnection in California municipalities. The finding shows that although the average capacity has increased for all municipalities throughout the study period, contrary to proponents’ arguments, the CCA approach has insignificantly decreased the capacity interconnected for municipalities. It is unclear if the result is due to a lack of higher-level support for the full CCA implementation or substitution by community-owned distributed generation. Future research is necessary to determine the CCA effect comprehensively in California. With this understanding, the research could be expanded to explore how community energy approaches work towards distributed generation across the U.S. and the globe.



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