This edition of our news in brief from around the world focuses on novel technologies promising several hours or more of competitively-priced energy storage.

A 2.5MW / 4MWh demonstration system using novel energy storage technology based on a “carbon dioxide battery” has begun construction in Sardinia, Italy.

The energy storage market is poised for strong growth over the next decade and opportunities are likely to emerge for alternatives to lithium-ion that offer longer durations of storage, but three key challenges remain for those technologies.