Molecular Mastery: Revolutionizing Solar Energy Storage With Photoswitches

 https://scitechdaily.com/molecular-mastery-revolutionizing-solar-energy-storage-with-photoswitches/

"EU-backed project Molecular Solar Thermal Energy Storage  (MOST)... absorb and store solar energy at room temperature... bicyclic dienes molecules switch to high-energy state when illuminated... all 6 of top scoring molecules differed from original norbornadiene quadricyclane system at crucial point in structure, an expansion of molecular bridge between 2 carbon rings in bicyclic part allowing new molecules to store more energy than original norbornadiene"

See also: New way to combine energy storage with solar cells
https://www.chalmers.se/en/current/news/k-new-way-to-combine-energy-storage-with-solar-cells/