> The only advancement for large scale is fly wheel storage. But the record is only 40 MWh for a duration of 4 hours. Waw. Not even close.
Flow batteries have already reached 60 MWh storage, and their capacity scales linearly with the volume of electrolytes, so it's effectively unlimited, unlike flywheels, which can only get so massive before their mechanical systems would fail.
They also have extremely fast response times, and unlike Lithium Ion batteries, are capable of charging to 100% and total depletion to 0% without damage to the battery.
Therefore they are already being deployed in grid-scale renewable energy applications to smooth out supply and demand.
Flow batteries have already reached 60 MWh storage, and their capacity scales linearly with the volume of electrolytes, so it's effectively unlimited, unlike flywheels, which can only get so massive before their mechanical systems would fail.
They also have extremely fast response times, and unlike Lithium Ion batteries, are capable of charging to 100% and total depletion to 0% without damage to the battery.
Therefore they are already being deployed in grid-scale renewable energy applications to smooth out supply and demand.
https://en.wikipedia.org/wiki/Vanadium_redox_battery#Largest...
The only thing they don't do well at is energy density, but for grid storage applications, that's not an issue.