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Topic: batteries

Rows of solar panels at a large utility-scale solar installation
Tech
Monday, 7/20, 07:14 AM

The grid battery problem: lithium-ion is cheap, but only for a few hours

  • Battery storage is being built at record pace, with 108 GW added worldwide in 2025 and pack prices at an all-time low of $108 per kilowatt-hour.
  • Almost all of it discharges over about two hours.
  • The chemistry that made short-duration storage cheap does not scale economically to the multi-day storage a renewables-heavy grid needs.

In brief

batteries — news and stories on this topic

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