The installed cost of solar PV, solar-plus-storage and standalone battery energy storage in the US was reduced across all market segments between 2020 and 2021, with the biggest drop seen in the utility-scale segment. 

What are the roles of battery storage and hydrogen in the clean energy system of the future? Matthias Simolka, a consultant at Germany-based TEAM CONSULT takes a look at the roles each plays today and where we might see the dynamics go from here, with regard to everything from large-scale renewables integration to electric transport.