{
  "$type": "site.standard.document",
  "description": "A system for gravitational energy storage is proposed beneath a clay or mudstone layer (2) suitable as a hydraulic barrier in subsurface beneath a land surface, comprising a gap volume under the barrier with an upper and a lower watertight plastic membrane as well as an edge around the gap…",
  "path": "/patents/1391817",
  "publishedAt": "2025-11-05T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "F03B13/06",
    "KARLSRUHER INST TECHNOLOGIE [DE]"
  ],
  "textContent": "A system for gravitational energy storage is proposed beneath a clay or mudstone layer (2) suitable as a hydraulic barrier in subsurface beneath a land surface, comprising a gap volume under the barrier with an upper and a lower watertight plastic membrane as well as an edge around the gap consisting of a hydraulically consolidated solid from a membrane-forming suspension, a subsurface region acting gravitationally on the gap volume above the gap between the barrier and the land surface, and a technical access (1) from a land surface above the barrier through the subsurface to the underside of the barrier (2) into the gap volume, wherein a tensile-resistant lining (3) is provided starting from the land surface at least in the uppermost section of the access. Furthermore, a method for the production and operation of such a system is proposed.",
  "title": "GRAVIMETRIC ENERGY STORAGE SYSTEM AND METHOD",
  "updatedAt": "2026-06-19T07:41:24.364Z"
}