Finding a good way to store solar energy is essential. Battery storage tends to be expensive and impractical for remote or under-developed regions. Storing the sun’s energy in fluids through changes in chemical bonds can be more compact and inexpensive. Coated on homes and buildings, a new material could store heat from the summer sun for use in the winter months when needed. Or it could lead to a battery-like heat-storage system, but one that doesn’t need electricity or have any complicated mechanics. Storage could last for months, maybe even years.
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