Industrial Heat.. Why does it matter?
All kinds of industrial uses require heat. Think smelting, sterilization, and others.
These industrial uses of heat contribute 9% of total US carbon emissions. The heat is typically generated from burning coal or other fossil fuels.
Interesting new companies have begun leveraging novel storage of renewable energy in bricks, gravel, volcanic rock, and other materials.
This technology is generally called "Thermal Energy Storage".
Benefits:
Reduced conversion losses
No critical minerals
Cheaper
Non-explosive
Long lifespans
No carbon emissions
One company, Rondo Energy, has a great walk-through of how it works: