{
  "abstract": "An energy storage and delivery system includes an elevator operable to move blocks from a lower elevation to a higher elevation to store energy and from a higher elevation to a lower elevation to generate electricity. A winch assembly is movably coupled to a cable that is coupled to the elevator. The winch assembly has planetary gear assemblies, brakes that selectively engage at least a portion of the planetary gear assemblies, and a spool coupled to the cable. A drive shaft extends between a motor-generator and the winch assembly. A brake is operable so that the spool rotates to reel-in the cable to raise the elevator to move a block from a lower elevation to a higher elevation to store energy or so that the spool rotates to reel-out the cable to lower the elevator to move a block from a higher elevation to a lower elevation to generate electricity.",
  "assignees": [
    "ENERGY VAULT INC"
  ],
  "authors": [
    "HÄNNI ROLAND MARKUS",
    "PEDRETTI ANDREA"
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  "source_date": "2026-03-10",
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  "title": "Energy storage and delivery system with an elevator lift system and method of operating the same",
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