In recent years, engineers have developed a growing number of alternative energy solutions that source electricity sustainably from sunlight, water, wind, hydrogen and other natural resources. For these technologies to fully substitute existing energy solutions, however, the energy they produce will need to be reliably stored and distributed on a large-scale.
source https://www.lifetechnology.com/blogs/life-technology-technology-news/a-system-for-the-reversible-hydrogenation-of-carbon-dioxide-into-formic-acid
