Everything WAPR collects, whether or not a page shows it yet. Counts are measured from the files themselves each time this page is built.
An instrument listed as collected-not-yet-displayed is running daily and its archive is accumulating; only the display is missing. We list it rather than wait, because what an instrument holds and what a page happens to render are different facts and conflating them is how registries start overstating themselves.
on a page18
Mapped facilities
Every building volunteer mapmakers have tagged as a data centre, in the parts of the world we have extracted so far.
- holdings
- 4,796
- grain
- event (rebuild per extract; daily diffs TODO via osmium apply-changes)
- collecting since
- 2026-09-14
- last run
- 2026-09-15T02:26:54Z · ok
- source
- Geofabrik extracts -> osmium tags-filter -> GeoJSON (US live; EU/Asia in progress 2026-09-14)
- licence
- ODbL — attribution + share-alike; keep OSM geometry separate from proprietary estimates
open the raw data →
Interconnection facilities
Colocation and interconnection sites that network operators register publicly. Enrichment only — it over-represents colo and under-represents hyperscale.
- holdings
- 4,524
- grain
- event
- collecting since
- 2026-09-13
- last run
- 2026-09-15T02:26:54Z · ok
- source
- PeeringDB /api/fac
- licence
- PeeringDB AUP — research only, permission email pending; no bulk redistribution
open the raw data →
Virginia regulated sites
Sites the Virginia environmental regulator has flagged as data centres, with what their backup generators actually emitted.
- holdings
- 196
- grain
- day (sites) / year (292 — upstream overwrites itself; WAPR snapshot is the only history)
- collecting since
- 2026-09-14
- last run
- 2026-09-15T02:15:14Z · ok
- source
- VA DEQ ArcGIS layers 294 (DC flag) / 298 (planned) / table 292 (emissions TPY)
- licence
- public agency data
open the raw data →
Power plants ≥250 MW
Large power stations, so a neighbouring plant is never mistaken for the data centre next to it.
- holdings
- 4,784
- grain
- event (STATIC 2021 snapshot — one-time ingest; plants commissioned after 2021 absent)
- collecting since
- 2026-09-14
- last run
- 2026-09-14T10:58:42Z · fetched
- source
- WRI Global Power Plant Database v1.3 via Resource Watch/GitHub (CC BY 4.0)
- licence
- CC BY 4.0 — attribute WRI
open the raw data →
Basin water stress
How scarce fresh water already is in the basin under each mapped facility. Exposure, not usage.
- holdings
- 4,796
- grain
- event (static 1979-2019 baseline; re-run per facility-frame vintage)
- collecting since
- 2026-09-14
- last run
- 2026-09-15T02:21:53Z · ok
- source
- WRI Aqueduct 4.0 baseline water stress via wri-rw Carto SQL (keyless; validated open-stack 2026-09-14)
- licence
- CC BY 4.0 — cite WRI Aqueduct 4.0
open the raw data →
Land surface temperature
Satellite land-temperature maps, every 8 days this year and every August back to 2000.
- holdings
- 116
- grain
- 8-day and month
- collecting since
- 2026-09-14
- last run
- 2026-09-15T02:38:36Z · ok
- source
- NASA GIBS WMS MODIS Terra L3 LST 8-day + monthly, decoded via GIBS colormap XML
- licence
- NASA GIBS open
open the raw data →
Overnight grid demand
Hour-by-hour electricity demand in each US grid area, reduced to the dead-of-night window where a data centre's load shows up clearest.
- holdings
- 13,025 · 1 file(s)
- grain
- hour -> daily overnight window (fixed 01:00-05:00 LOCAL Eastern, DST-verified)
- collecting since
- 2026-09-14
- last run
- 2026-09-15T02:15:54Z · ok
- source
- EIA API v2 rto/region-data + region-sub-ba-data, hourly demand, DOM + 20 PJM sub-BAs
- licence
- EIA open (key in .env)
Texas interconnection queue
How much generating capacity is queued to connect in Texas against how much has signed a binding agreement.
- holdings
- 3
- grain
- month (new vintage only on new DocID)
- collecting since
- 2026-09-14
- last run
- 2026-09-15T02:18:14Z · no_new_report
- source
- ERCOT MIS reportTypeId 15933 = GIS Report (GENERATOR interconnection queue — NOT large-load; research misattributed it, see TRACKER 2026-09-14)
- licence
- ERCOT public MIS
Plant emissions, hourly
What neighbouring power plants actually emitted and generated, day by day, from the regulator's own monitors on the chimneys themselves. Every large plant that sits near a mapped facility and is monitored; the payload states the coverage it reached.
- holdings
- 198,726 · 220 file(s)
- grain
- day (published-quarter lag; endDate clamped to ceiling)
- collecting since
- 2026-09-14
- last run
- 2026-09-15T02:37:06Z · empty_source_series
- source
- EPA CAMPD apportioned daily emissions (x-api-key; concurrency 1)
- licence
- EPA open
open the raw data →
Crane filings
Every tall-crane notice filed with the aviation authority near a mapped facility — construction shows up here months before a building does.
- holdings
- 16,591 · 2 file(s)
- grain
- day (case events)
- collecting since
- 2026-09-14
- last run
- 2026-09-15T02:15:29Z · gate_failed
- source
- FAA OE/AAA Part 77 case archives, 9 regions
- licence
- public FAA data
open the raw data →
Model publication
Every AI model published to the main public library, including ones with their safety training stripped out.
- holdings
- 23,622 · 2 file(s)
- grain
- day
- collecting since
- 2026-09-14 # NOT a backfill; deletion shadow is unbackfillable
- last run
- 2026-09-15T02:15:09Z · ok
- source
- Hugging Face /api/models createdAt cursor
- licence
- HF API public
Crawler identity
The keys AI companies publish so a website can tell their crawlers from impostors, archived daily because nobody else keeps them.
- holdings
- 11
- grain
- event (12h probe cadence)
- collecting since
- 2026-09-13
- last run
- 2026-09-15T02:15:05Z · same
- source
- 10 agent/crawler identity endpoints (OpenAI WBA JWKS, gptbot/searchbot/chatgpt-user, Anthropic, Google x3, Perplexity x2)
- licence
- public documents
Ireland's data-centre electricity
Ireland is the only country that officially counts data-centre electricity as its own category. Everywhere else the sector vanishes into general business use.
- holdings
- 132 · 1 file(s)
- last run
- 2026-09-15T02:38:23Z · derived
open the raw data →
Live anomalies
Unusual conditions right now near the mapped sites — storms, drought, space weather. Things happening TO the sites, not caused by them.
- holdings
- 35
- last run
- 2026-09-15T02:37:10Z · ok
open the raw data →
Permitted water discharge
Every US facility calling itself a data centre that holds a permit to discharge water — where, under what permit number, and at what flow.
- holdings
- 43
- last run
- 2026-09-15T02:39:49Z · derived
open the raw data →
Rivers near facilities
Flow and water temperature at public stream gauges near mapped sites — exposure, never a claim that a site warms a river.
- holdings
- 998
- grain
- instantaneous snapshot per run
- collecting since
- 2026-09-14
- last run
- 2026-09-15T02:38:37Z · derived
- source
- USGS NWIS instantaneous values — stream gauges (flow 00060, water temperature 00010), keyless
- licence
- USGS public domain
open the raw data →
The heat effect, to scale
The most-requested claim about data centres, drawn at true size against the instruments that would have to detect it — a published negative result.
- holdings
- 10
- grain
- static (a physical bound, not a measurement)
- collecting since
- 2026-09-14
- last run
- 2026-09-15T02:38:36Z · ok
- source
- WAPR environmental research synthesis, computed here from its two published bounds
- licence
- WAPR derivation over public research
open the raw data →
Grid fuel mix by operator
What kinds of power station are physically running on the grid where each company's data centres sit — not what the company says it buys.
- holdings
- 22
- last run
- 2026-09-15T02:36:30Z · ok
open the raw data →
Counts are measured from the files each time this page is built — never carried over from a document. An instrument that has never run shows no holdings rather than a zero.