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ABC News
ABC News
National
technology reporter James Purtill

Vanadium redox flow batteries can provide cheap, large-scale grid energy storage. Here's how they work

UNSW Australia lithium Electricity NASA NT United States

The rise of renewable energy has exposed a new problem: energy storage.

Solar and wind can generate very cheap electricity, but they're intermittent. For entire grids to run on renewables, enormous amounts of storage are needed to avoid blackouts.

The two main options, pumped hydro and lithium-ion batteries, each have their drawbacks, such as high costs.

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