{
  "version": "2026-09-25",
  "snapshotAt": "2026-09-25",
  "methodologyVersion": "4",
  "datasetPublished": "2026-03-09",
  "counts": {
    "megaProjects": 54,
    "megaCapacityMW": 109198,
    "megaInvestmentB": 1206.2,
    "facilities": 1771,
    "jurisdictions": 48,
    "estimatedTotal": 5207
  },
  "files": [
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      "name": "mega-projects.csv",
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      "bytes": 20496,
      "sha256": "eb44886446fa6eeb9a1c71c15661a0cc5b14ba95211d6876b8292434bcafb6be",
      "rows": 54,
      "license": "compilation",
      "description": "Tracked US data center mega projects with the basis and confidence of every figure. One row per project, sorted by planned capacity."
    },
    {
      "name": "mega-projects.json",
      "mediaType": "application/json",
      "bytes": 61293,
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      "rows": null,
      "license": "compilation",
      "description": "The same projects as mega-projects.csv in camelCase, with the project description, the source as an object, national totals split by basis, and the basis dictionary inline."
    },
    {
      "name": "states.csv",
      "mediaType": "text/csv",
      "bytes": 4671,
      "sha256": "62bcadc83494d1a8541890b80297817e31f049e91945aa98aac8c68cf618f987",
      "rows": 48,
      "license": "compilation",
      "description": "Verified and estimated facility counts plus mega project totals for every covered jurisdiction, sorted by verified count."
    },
    {
      "name": "facilities.csv",
      "mediaType": "text/csv",
      "bytes": 296068,
      "sha256": "ed7c90ced10c7be66cbfffd82524c99f91d64322a88be149cd13cb0820cacd59",
      "rows": 1771,
      "license": "facilities",
      "description": "Every OSM-verified facility in the directory, all jurisdictions in one file. The live site serves this layer per state at /data-centers/<state>/facilities.csv."
    },
    {
      "name": "README.md",
      "mediaType": "text/markdown",
      "bytes": 11301,
      "sha256": "d3fff3241b887eb9e067520f3d02ba8935500b4e579389d19cce0ba04febe3d6",
      "rows": null,
      "license": null,
      "description": "Human-readable description of this release: counts, files, data dictionary, method, changes, citation."
    },
    {
      "name": "LICENSE.txt",
      "mediaType": "text/plain",
      "bytes": 1825,
      "sha256": "689bdc67dce899b4b3d99e19228e8ca2e45f9ff513bf71cf04bab5517c427506",
      "rows": null,
      "license": null,
      "description": "Which license covers which file."
    },
    {
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      "bytes": 386,
      "sha256": "cd95fefa027de14784fcd903bf8d3555094c978d1e7cbc1d03c778f7addc6508",
      "rows": null,
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      "description": "BibTeX entry for this release."
    }
  ],
  "changelog": {
    "summary": "Street addresses for 362 more OpenStreetMap facilities, from public-domain address points reviewed by hand, and an address_basis column that says where every facility address comes from. The OpenStreetMap layer and the mega projects are unchanged.",
    "changes": [
      "Added address_basis and address_source to facilities.csv. address_basis is osm, address-point, campus, or researched; address_source names the dataset release or URL behind every address that is not tagged in OpenStreetMap.",
      "Added street addresses, cities, and postal codes for 362 facilities that OpenStreetMap maps without an address: 325 from an address point inside the building outline or within 10 meters of it, and 37 from the nearest address point within 50 meters. 356 come from the USDOT National Address Database and 6 from public-domain county sources (Alameda, Santa Clara, Alachua, and Duval counties), all through Overture Maps release 2026-09-23.0. Facilities with a street address rose from 899 to 1,261 of 1,771.",
      "Every candidate was screened, then reviewed by hand. Tested on the 855 facilities OpenStreetMap already addresses, with their tags hidden, screened candidates matched the tagged house number and street 90.6% of the time for in-outline points and 89.2% for points within 50 meters. Most mismatches were the building’s own number on the right street where the tag carries a campus mailing address. Candidates that a second address point, a PeeringDB listing, or the facility name contradicted were held back.",
      "Cities from address points were checked against tagged facilities and other address points nearby, because some county records carry a neighborhood, an airport district, a county, the owner’s city, a placeholder such as “Incorporated”, or no city at all instead of the mailing city. 22 facilities had their city, and one its postal code, corrected by hand.",
      "510 facilities still have no street address and are listed with their coordinates only.",
      "The OpenStreetMap layer was not refreshed: names, operators, coordinates, and counts are those of the 2026-09-14 extract. Mega project figures are unchanged, and their last_verified_at stays 2026-09-16, the last release in which every project was re-checked.",
      "Methodology version 4."
    ]
  }
}