Batteries rely on chemistry. You cannot get around the periodic table. The most a single battery cell can generate in voltage is about 3 volts. The size of the cell determines ampacity. Those are fixed and known facts and aren't going to change. Batteries cost money. They are unnecessary for electrical generation systems that can generate power on demand.
Bottom line: Batteries are expensive and an added cost to systems like solar and wind that can't generate reliable power.
We can use dams and reservoirs and pumps as a battery, so no....surely we can figure something out.
