“On the other hand, more sustainable, lower-cost local electricity generation does not necessarily require islanding capability,” says Enea Consulting analyst Maeva Faure. The microgrid case studies, investigated by the study partners and taken from the service sector (eco-neighbourhoods, buildings with low heating needs or heated electrically), confirmed that a microgrid is rarely viable economically. Microgrids are smart grids with an additional “islanding” capability – the ability to disconnect from the main grid and operate autonomously for a limited period of time.įor economic reasons, smart grids (without islanding capability) are better suited to urban settings with intermittent energy generation. To understand the lessons to be learned from this study, a distinction must be first be made between smart grids and microgrids. The analysis is based on three case studies: an eco-neighbourhood in San Diego, California, with peak demand related to air conditioning a French airport working to improve its carbon footprint and an industrial site in France with substantial thermal energy requirements. The analysis coordinated by Enea Consulting was based on three case studies in France and the United States: an eco-neighbourhood, an airport and an industrial site. What value can microgrids bring to urban ecosystems, and under what circumstances? What challenges must be addressed in order to foster and accelerate their emergence? A study by Enea Consulting, carried out in partnership with Omexom (VINCI Energies), the ADP Group, the Caisse des Dépôts Group, Enedis, Total, and the Tuck Foundation, provides some initial answers to these questions. An Enea Consulting study looks at the prerequisites for energy and economic efficiency in urban microgrids.
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