AUTHOR=Eicker Ursula TITLE=Editorial: Positive Energy Districts: Transforming Urban Areas Into High Efficiency Districts With Local Renewable Generation and Storage JOURNAL=Frontiers in Sustainable Cities VOLUME=4 YEAR=2022 URL=https://www.frontiersin.org/journals/sustainable-cities/articles/10.3389/frsc.2022.838899 DOI=10.3389/frsc.2022.838899 ISSN=2624-9634