AUTHOR=Alves Erick Fernando , Mota Daniel dos Santos , Tedeschi Elisabetta 

TITLE=Corrigendum: Sizing of Hybrid Energy Storage Systems for Inertial and Primary Frequency Control

JOURNAL=Frontiers in Energy Research

VOLUME=9

YEAR=2021

URL=https://www.frontiersin.org/journals/energy-research/articles/10.3389/fenrg.2021.718210

DOI=10.3389/fenrg.2021.718210

ISSN=2296-598X