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Electricity storage is the capture of energy produced at one time for use later. It’s typically used to capture energy from intermittent sources like wind or solar when demand is low. Then, it can be used later when demand is high.

Electric Storage technologies

It includes technologies like:

  • Batteries
  • Compressed air facilities
  • Flywheels

Electric Storage options

These options vary on:

  • Their size and scale
  • How energy is stored
  • How long energy can be stored
  • How quickly or slowly they can be turned on
  • The amount of time they can supply energy

Dependability

Low reliability

When we need extra power, we can tap into limited storage.

Cost

Storage options are expensive but are becoming more economical as technologies advance.

Emissions

Low environmental impact

With no emissions, this is an environmentally friendly resource.

Now

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We’re working on our first 20MW battery energy storage system. We expect it will be completed in 2022. Learn more.

Future

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We’ll continue to assess electricity storage projects as part of our future supply options.

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