AUTHOR=Perea-Moreno Alberto-Jesus , Nadaleti Willian Cézar , Manzano-Agugliaro Francisco TITLE=Editorial: Energy saving for sustainable cities JOURNAL=Frontiers in Energy Research VOLUME=11 YEAR=2023 URL=https://www.frontiersin.org/journals/energy-research/articles/10.3389/fenrg.2023.1322805 DOI=10.3389/fenrg.2023.1322805 ISSN=2296-598X