Or you need industry that basically turns electricity to profit and can adjust it's peak to whenever cheap power is available. There are definitely industrial processes that can be adjusted to take advantage of unpredictable oversupply that renewables create.

Cue sodium batteries.

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Industrial solar doesn't use batteries. For storing the size of energy necessary at industrial scale, it's massively impractical and expensive. Industrial energy storage is done largely using pumps and water. Pump water up-hill with overflow energy, let it generate hydro downhill during energy demand.