Special Report: The truth about energy storage

For as long as renewable energy has been a threat to the conventional power sector, it has been plagued by warnings that too much wind and solar would destabilise the grid. Intermittent renewable energies could never power advanced economies unless they were backed up by large-scale affordable battery storage — a technology that had always seemed a distant dream. Yet, the dream seems to suddenly be not only achievable, but imminent and inevitable.

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