I think it foreshadows a future in which every battery system connected to the grid has a grid forming inverter. Every one of them becomes a source of frequency and voltage stabilisation. The grid becomes rock solid.
www.volts.wtf/p/how-inverters-can-stabilize-a-renewables
docs.nrel.gov/docs/fy24osti/90256.pdf
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And I predict it will go further: these battery systems with grid forming inverters with batteries attached will disconnect from the grid during a blackout and this effectively means they provide a firewall aka UPS for everyone attached to them.
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The future grid will be inherently stable bottom-up. It will consist of a society of nested micro-grids with the grid as backup. They will make energy cheaper, more resilient and more local.
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