Release 2026-09-14

Name: US Data Center Directory, release 2026-09-14
Creator: Malachi.Energy
Published: 2026-09-15

Dataset version 2026-09-14 · Snapshot 2026-09-15 · Method v2 · Files never change

Maintained and reviewed by Malachi Rein, LEED AP BD+C · Superseded by 2026-09-16

Frozen release 2026-09-14 of the Malachi.Energy US Data Center Directory: 54 tracked mega projects (109,198 MW planned), 1,771 OSM-verified facilities across 48 jurisdictions, and state estimates reconciled to 5,207. Files with SHA-256 checksums, data dictionary, method version 2, and changelog.

Files

Files in release 2026-09-14 with size, row count, license, and SHA-256
File	Rows	Size	License	SHA-256
mega-projects.csv Tracked US data center mega projects with the basis and confidence of every figure. One row per project, sorted by planned capacity.	54	19 KB	Attribution	43e4875e50a30799a203f94a15084ce4e08c1b189ec0dbb1bc91083ad29350c1
mega-projects.json 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.		48 KB	Attribution	4c7a849ade8a9a2dc6357f40f2c08425740acd65fcefa6aa1aa5184b6f8b17fd
states.csv Verified and estimated facility counts plus mega project totals for every covered jurisdiction, sorted by verified count.	48	5 KB	Attribution	62bcadc83494d1a8541890b80297817e31f049e91945aa98aac8c68cf618f987
facilities.csv 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.	1,771	251 KB	ODbL 1.0	38c6674ecd353fcec039be57eb83dff8d15ea9f0da30a75fa1ec392b37538294
README.md Human-readable description of this release: counts, files, data dictionary, method, changes, citation.		9 KB		6bbb8668d4d95137a9d575e00eab41821f82ada427bec2dfb9af45711ec7891c
LICENSE.txt Which license covers which file.		1 KB		f8fca218402d5719c900099783582904cef48d93fd1a32745ce7c7f5535ae61e
CITATION.bib BibTeX entry for this release.		1 KB		8a831c0ff1df951c89a7e86e06c711e68f13cf39cd9034381cd5eef4fb52bbb9
manifest.json and checksums.sha256 describe the files above; they are not hashed themselves.

Verify a download from the release directory:

curl -sO https://malachi.energy/data-centers/releases/2026-09-14/{mega-projects.csv,mega-projects.json,states.csv,facilities.csv,README.md,LICENSE.txt,CITATION.bib,checksums.sha256}
sha256sum -c checksums.sha256

Cite this release

Rein, Malachi (2026). US Data Center Directory, dataset version 2026-09-14. Malachi.Energy. https://malachi.energy/data-centers/releases/2026-09-14

@misc{malachienergy_data_centers_2026_09_14,
  author = {Rein, Malachi},
  title = {US Data Center Directory},
  howpublished = {Malachi.Energy},
  year = {2026},
  version = {2026-09-14},
  note = {Dataset version 2026-09-14. Facility layer ODbL 1.0 (OpenStreetMap contributors); compilation free with attribution.},
  url = {https://malachi.energy/data-centers/releases/2026-09-14}
}

Same entry as CITATION.bib in the release directory. Cite the release URL, not the hub, when the numbers must not move.

Changes in this version

Full OSM facility refresh, every mega project re-researched against a dated public source, per-figure basis and confidence columns, and state estimates reconciled to the national count.

Refreshed the OpenStreetMap facility layer through the Overpass API and reassigned every facility to a jurisdiction by point-in-polygon against Census boundaries.
Re-researched all tracked mega projects. Each now carries a public capacity figure, a public investment figure, a source (label, URL, date), a capacity basis, an investment basis, and a confidence rating. Projects with no public figure for either were retired rather than estimated.
Added the columns capacity_basis, investment_basis, is_estimate, confidence, included_in_aggregate, comparable_campus_investment, source_label, source_url, source_date, last_verified_at, and url to the mega project exports.
State estimates now reconcile to the Baxtel national count exactly (methodology version 2). This derivation landed on 2026-09-15, after the data refresh date, so estimated_total values in this release differ from the site as served on 2026-09-14 while osm_verified values do not.
Coverage is 46 states, the District of Columbia, and Puerto Rico.
First frozen release. Earlier versions were served only at the moving URLs and cannot be reproduced byte for byte.

Full changelog Next release 2026-09-16

Method version 2

State estimates reconcile to the Baxtel national count exactly: Baxtel state counts where published, the remainder allocated in proportion to OSM-verified count with a derived multiplier (largest-remainder rounding). Every mega project carries a capacity basis, an investment basis, a confidence rating, and a dated public source. In effect since 2026-09-15.

The reconciliation table and investment split for the current live version are on the hub methodology block. README.md in the release directory carries the text as it stood at snapshot time.

Data dictionary

mega-projects.csv23 columns

Tracked US data center mega projects with the basis and confidence of every figure. One row per project, sorted by planned capacity.

id: Stable slug; also the last segment of the project page URL.
name: Campus or project name as the developer uses it.
developer: Company building or operating the campus.
location: City or county and state, as reported.
state: Two-letter USPS abbreviation.
capacity_mw: Planned power capacity in megawatts. Planned, not delivered.
capacity_basis: What the capacity figure rests on. One of: disclosed, filing, reported, estimated.
investment_usd_billions: Announced investment in USD billions.
investment_basis: What the investment figure measures. One of: campus-capex, first-phase-capex, bond-authorization, power-plant-capex, program-commitment, press-reported, analyst-estimate.
is_estimate: true when capacity is a Malachi.Energy estimate or investment is a third-party analyst estimate.
confidence: high when both figures come from the developer or a filing and the site has physical progress or firm contracts; medium when one figure is reported, estimated, or scoped differently than the campus; low when proposed without permits or capacity is an estimate.
included_in_aggregate: Whether the row counts toward the headline totals. Currently true for every project.
comparable_campus_investment: true when the investment basis is developer-stated campus or first-phase cost, the only bases that measure the same thing.
status: operational (first phase serves load), under-construction, announced, or proposed.
target_year: Developer-stated year for first or full operation. Empty when none is public.
lat: Latitude, WGS84. Precision varies by source; one-decimal values locate a county, not a site.
lon: Longitude, WGS84.
location_basis: How precisely the coordinate locates the campus. One of: site, address, city-centroid, county-centroid. Distance facts count only site and address rows.
source_label: Publisher of the primary public source for the two figures.
source_url: URL of that source.
source_date: Evidence date of the source, ISO, month precision allowed.
last_verified_at: Dataset version date. Every project is re-checked against its source at each refresh.
url: Project page on malachi.energy.

mega-projects.jsonJSON

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.

states.csv10 columns

Verified and estimated facility counts plus mega project totals for every covered jurisdiction, sorted by verified count.

state: Jurisdiction name.
abbr: Two-letter USPS abbreviation.
osm_verified: Facilities tagged as data centers in OpenStreetMap with a mapped location in this jurisdiction.
estimated_total: Estimated facility count: Baxtel state count where Baxtel publishes one, otherwise osm_verified scaled so all jurisdictions sum to the Baxtel national total.
mega_project_count: Tracked mega projects in the jurisdiction.
mega_capacity_mw: Sum of planned capacity across those projects, megawatts.
mega_investment_usd_billions: Sum of announced investment across those projects, all bases mixed.
top_operator: Operator with the most OSM-verified facilities in the jurisdiction.
top_hub: City with the most OSM-verified facilities in the jurisdiction.
url: State page on malachi.energy.

facilities.csv12 columns

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: Facility name from OpenStreetMap, empty when untagged.
operator: Operator from OpenStreetMap, empty when untagged.
city: City from the OSM address tags or reverse geocode.
state: Two-letter USPS abbreviation, assigned by point-in-polygon against Census boundaries.
address: Street address when tagged.
postcode: Postal code when tagged.
lat: Latitude, WGS84. Centroid for building outlines.
lon: Longitude, WGS84.
website: Website when tagged.
osm_type: node, way, or relation.
osm_id: OpenStreetMap element id.
osm_url: Link to the element on openstreetmap.org.

Licenses

Two layers, two licenses. facilities.csv and the verified-count columns of states.csv derive from OpenStreetMap contributors and carry the Open Database License (ODbL) 1.0. The mega project files and the state estimates are Malachi.Energy’s compilation, mega project tally and state estimates, free for personal, educational, and editorial use with attribution to Malachi.Energy. The split is spelled out file by file in LICENSE.txt.

Release 2026-09-14, snapshot 2026-09-15. Facility data from OpenStreetMap contributors (ODbL). Mega project data from public filings and announcements. Maintained by Malachi Rein for Malachi.Energy.