were do they store electricity?

Answer 1

There are two ways to store electrical energy, chemically, and statically:

Batteries are a means of chemical storage and Capacitors are a means of statically storage.

Also the Energy can be stored through following methods:

* Electrochemical
o Batteries
o Flow batteries
o Fuel cells
* Electrical
o Capacitor
o Supercapacitor
o Superconducting magnetic energy storage (SMES)
* Mechanical
o Compressed air energy storage (CAES)
o Flywheel energy storage
o Hydraulic accumulator
o Hydroelectric energy storage
o Spring
* Thermal
o Molten salt [1]
o Cryogenic liquid air or nitrogen
o Seasonal thermal storeage
o Solar pond
o Hot bricks
o Steam

Answer 2

Directly:
o A capacitor, which consists of two conductors separated by an insulator.
Indirectly:
o A Storage battery (e.g. NiMh rechargeable flashlight, lead-acid car battery): can provide a fair amount of power for hours or days
o A flywheel: can provide a lot of power for a short time
o A reservoir: pumping water up stores energy, released as electricity by a turbine and generator
o A cave: pump air in when there's extra capacity, let it whoosh out through a turbine genetrator at peak load.

Answer 3

In Colorado they have several pumped storage systems.

They take excess electrical grid capacity and use it to operate pumping systems. The pumps pump the water from lakes at a lower elevation to other lakes at a higher elevation thru a number of pipes.

Then during periods of high demand for electrical power they release the water in the elevated lakes and run it downhill thru power turbines to generate electricity and back into the lower lakes again.

Answer 4

I think your question is related to the electricity furnished by your local utility. While most of the electricity is generated the instant it is needed, there are a few technologies for storing the excess capacity during periods of light loads.

The most common methods of storing large quantities of electricity are:
- Pumped water storage
- Compressed air storage
- Spinning flywheels
- Batteries

The link below describes a brand new battery storage facility that provides 7.2 MWh of capacity.

The 1.2-MW Distributed Energy Storage System can supply 7.2 MWh of electrical energy on demand. It consists of twenty series-connected battery modules. Each module contains 320 sodium-sulfur batteries and can provide 360 kWh . . . 50 kW of continuous power for 7.2 hours, or—under peak-load conditions—60 kW for 3 hours plus 25 kW for 7.2 hours.

Answer 5

Capacitors can store electricity in electrical devices, or batteries. There is no real storing power for the power grid.

Answer 6

I Wales they use excess supply from the Grid to pump water to the top of a mountain, Then get the electricity back by dropping the water back thru the same system

Answer 7

Electricity on the grid is made on demand. It isn't stored.

Of course, electricity can be stored in batteries.