electricity stored by batteries today is less than miniscule.
Pumped storage, not batteries, provides about 97% of grid power storage in the United States today. Pumped storage uses electricity to pump water into an elevated reservoir to be used to drive a turbine when electricity is needed. But less than one in every 100,000 watts of US electricity comes from pumped storage.
In 2018, US power plants generated 4.2 million GW-hours of electrical power. Pumped storage capacity totaled about 23 GW-hrs. Battery storage provided only about 1 GW-hr of capacity. Less than one-millionth of our electricity is stored in grid-scale batteries.
Electricity storage is expensive. Pumped storage is the least costly form of grid storage at about $2,000 per kilowatt, but requires areas where an elevated reservoir can be used. Battery storage costs about $2,500 per kilowatt for discharge duration of two hours or more. Batteries are more expensive than onshore wind energy, which has an installed market price of under $1,000 per kilowatt. But a key factor in the effectiveness of storage is the length of time that the system can deliver stored electricity.
That's why gets me about EV. It seems like car manufacturers suffer from fomo (fear of missing out) but until the next battery tech comes along, EV cars seem more like an experiment than a viable source of primary transportation. There are some benefits to EV but they aren't going to overwhelm the IC engine anytime soon.
Wait until Gasoline gets above $10/gallon. EV will be a very big deal. Soon. Few more years is all EV cars need.
You do know that the cost of electricity is closely tied to the cost of energy/oil/gas.. right?
We'll need improvements in storage and collection before EV's become truly practical. That will happen eventually.