AUTHOR=Bao Jieying , Gao Xiang , Yan Xin TITLE=Opinions on the multi-grade pricing strategy for emergency power supply of mobile energy storage systems JOURNAL=Frontiers in Energy Research VOLUME=12 YEAR=2024 URL=https://www.frontiersin.org/journals/energy-research/articles/10.3389/fenrg.2024.1414068 DOI=10.3389/fenrg.2024.1414068 ISSN=2296-598X