Clean electricity generation paired with the first grid-level sodium battery energy storage system can bring costs down to just $0.028 per kWh. The 10 MWh storage capacity is executed with sodium-ion cells that can be charged in just 12 minutes.
  • @blazeraEnglish
    69•7 months ago

    Time until full charge isnt really a relevant metric for utility storage, you want larger storage, which would increase full charge time. Rate of charge is what matters.

    • @0110010001100010
      27•7 months ago

      210 Ah cells to 90% in 12 minutes.

      Assuming I can math early on a Monday morning:

      90% of 210 is 189

      189 / 12 is 15.75

      So they charge at 15.75 an Ah per minute. Not sure how that compares honestly.

          • @[email protected]English
            11•7 months ago

            The C rating can absolutely still be used when talking about recharging, it’s just usually less relevant.

            • @[email protected]
              3•7 months ago

              No. The C rating is a cell’s maximum discharge rate without damaging the cell.

              You absolutely can’t charge that 30C battery at 30A

        • @[email protected]
          1•7 months ago

          You are not completely right. 1 C means it can (theoretically) be charged in 1h. Regardless of the capacity.

          10 C means it can be charged in 1/10th of an hour.

          To get the maximum current, multiply the capacity by the C rating.

        • @Cort
          1•7 months ago

          So like 4-5c roughly if the 90-100% charge rate is similar to the 0-90%. Way lower than some of the lithium cells I’ve seen at 30+c

    • @ChicoSuave
      14•7 months ago

      They’re brand new and the writer needs a number to look impressive.