18 years of energy storage tops CAES Compressed Air Energy Storage, which is less lossy than batteries and ultracapacitors, and probably even molten salt, and m

18 years of energy storage tops CAES Compressed Air Energy Storage, which is less lossy than batteries and ultracapacitors, and probably even molten salt, and maybe gravitational energy storage too? Though, you could do CAES with captured CO2 and it would be less of an accelerant than standard compressed air. How many CO2 fire extinguishers can be filled and shipped off-site per day? Can CO2 can be made into QA'd [graphene] air filters for [onsite] [flue] capture?