The energy storage revolution

The majority of electricity in years to come will be generated by ...

• offshore wind farms

• power plants using renewable energy

• burning fossil fuels

• residential and commercial buildings

Which does the writer NOT consider a challenge?

• Electricity must be stored away from where it was generated.

• Renewable energy can't produce sufficient electricity.

• The amount of energy produced is changeable.

• Energy must be harvested from, as well as delivered to, properties.

Pumped hydroelectric facilities ....

• are dependent on geography.

• are no longer in use.

• don't store energy effectively.

• are unreliable.

What is TRUE about lithium-ion batteries?

• They can store more energy than any other device.

• They are becoming less affordable.

• They can cope with varying input and output.

• They are very small.

What aspect of lithium-oil batteries is problematic?

• thir incompatibility with pumped hydroelectric storage

• their inability to regulate energy input

• their high rate of energy waste

• their incapability to charge quickly

Find the meaning of: generated

• produced

• quantity produced

• quantity required

• stable

Find the meaning of: grid

• stable

• a network of electricity

• change

• available space

Find the meaning of: fluctuate

• becoming too warm

• produced

• change

• is more than

Find the meaning of: supply

• produced

• stable

• quantity required

• quantity produced

Find the meaning of: demand

• quantity produced

• quantity required

• produced

• stable