/? MOST Molecular Solar Thermal Energy Storage https://www.google.com/search?q=MOST%3A+Molecular+Solar+Ther... https://scholar.google.com/scholar?hl=en&as_sdt=0%2C44&q=MOS...
> The technology is based on a specially designed molecule of carbon, hydrogen and nitrogen that changes shape when it comes into contact with sunlight.
> It shape-shifts into an ‘energy-rich isomer’ - a molecule made up of the same atoms but arranged together in a different way. The isomer can then be stored in liquid form for later use when needed, such as at night or in the depths of winter.
> A catalyst releases the saved energy as heat while returning the molecule to its original shape, ready to be used again.
> Over the years, researchers have refined the system to the point that it is now possible to store the energy for an incredible 18 years
"Chip-scale solar thermal electrical power generation" (2022) https://doi.org/10.1016/j.xcrp.2022.100789
What prevents this from being scaled up?