Methodology
Source dates, gaps and terms.
About this
What a record page cannot say: how old a source’s data is, which gaps mean no source rather than no activity, and what the words mean.
Some sources here allow noncommercial use only. Each is credited on its records, and it comes off the site if we stop publishing it.
Release dates
Cite the release date, not the date we checked. Oldest: 2017, EIA Energy Atlas.
Release dates
A release is the source’s own date; the date we last checked it is ours. Cite the release. The oldest release loaded is 2017, from EIA US Energy Atlas — Natural Gas Processing Plants (point geometries, operator, capacity), so a fact here can be that old however recently we checked.
43 of the 53 sources publish no release date; for those, the date we last checked is the only date there is.
Dates for each source
| Source | Release | Basis | Last checked |
|---|---|---|---|
| TED | none | none published | 10 Nov 2026 |
| Find a Tender | none | none published | 10 Nov 2026 |
| NESO | none | none published | 10 Nov 2026 |
| Epoch AI | none | none published | 9 Nov 2026 |
| GEM | none | none published | 9 Nov 2026 |
| TransitionZero | none | none published | 9 Nov 2026 |
| World Bank | none | none published | 10 Nov 2026 |
| Cochise County | none | none published | 10 Nov 2026 |
| EIA-860M | none | none published | 9 Nov 2026 |
| EIA Energy Atlas | January 2020 | in the shapefile's names | 9 Nov 2026 |
| EIA Energy Atlas | 2017_2018 | in the shapefile's names | 9 Nov 2026 |
| EIA Energy Atlas | none | none published | 9 Nov 2026 |
| EIA Energy Atlas | January 2020 | in the shapefile's names | 9 Nov 2026 |
| EIA Energy Atlas | 2017 | in the shapefile's names | 9 Nov 2026 |
| EIA Energy Atlas | December 2020 | in the shapefile's names | 9 Nov 2026 |
| EIA Energy Atlas | January 2020 | in the shapefile's names | 9 Nov 2026 |
| EIA Energy Atlas | April 2020 | in the shapefile's names | 9 Nov 2026 |
| EIA Energy Atlas | January 2020 | in the shapefile's names | 9 Nov 2026 |
| EIA Energy Atlas | September 2021 | in the shapefile's names | 9 Nov 2026 |
| EIA Energy Atlas | 2021 | in the shapefile's names | 9 Nov 2026 |
| EIA ethanol capacity | none | none published | 9 Nov 2026 |
| EPA AgSTAR | none | none published | 9 Nov 2026 |
| EPA Class VI | none | none published | 9 Nov 2026 |
| EPA ICIS-Air | none | none published | 9 Nov 2026 |
| EPA ICIS-NPDES | none | none published | 9 Nov 2026 |
| EPA EIS | none | none published | 10 Nov 2026 |
| EPA LMOP | none | none published | 9 Nov 2026 |
| FAA OE/AAA | none | none published | 9 Nov 2026 |
| Georgia EPD | none | none published | 9 Nov 2026 |
| Georgia EPD | none | none published | 9 Nov 2026 |
| Grants.gov | none | none published | 10 Nov 2026 |
| CAISO | none | none published | 10 Nov 2026 |
| ERCOT | none | none published | 10 Nov 2026 |
| CyrusOne | none | none published | 31 Oct 2026 |
| Microsoft newsroom | none | none published | 31 Oct 2026 |
| STACK Infrastructure | none | none published | 31 Oct 2026 |
| Vantage Data Centers | none | none published | 31 Oct 2026 |
| LBNL | none | none published | 9 Nov 2026 |
| Berkeley Lab | none | none published | 9 Nov 2026 |
| LBNL "Queued Up" data file | none | none published | 9 Nov 2026 |
| OpenStreetMap | none | none published | 10 Oct 2026 |
| Permitting Dashboard | none | none published | 9 Nov 2026 |
| Appalachian Power (AEP) | none | none published | 10 Nov 2026 |
| Connecticut DEEP | none | none published | 10 Nov 2026 |
| Indiana Michigan Power (AEP) | none | none published | 10 Nov 2026 |
| New Jersey BPU | none | none published | 10 Nov 2026 |
| PSO (AEP) | none | none published | 10 Nov 2026 |
| SWEPCO (AEP) | none | none published | 10 Nov 2026 |
| SEC EDGAR | none | none published | 10 Nov 2026 |
| PUC Texas Interchange | none | none published | 7 Nov 2026 |
| Texas RRC | none | none published | 2 Nov 2026 |
| Virginia DEQ | none | none published | 8 Nov 2026 |
| Loudoun County | none | none published | 5 Nov 2026 |
Placement and defaults
How records are placed and shown
- A record sits at its source’s coordinate where the license allows; else at its county center (US Census Gazetteer 2024, public domain).
- No usable county or state: counted as Unplaced, never guessed. NESO’s TEC Register rows are Unplaced for this reason.
- Map and Projects open on active projects (announced to under construction).
- Withdrawn and cancelled are one switch away; most queue history is withdrawn requests.
- Clusters are computed by the server; the page draws what the API returns.
- Tiles: OpenStreetMap. Outlines beneath (Natural Earth, US Census TIGERweb, public domain) keep the map legible if tiles fail.
How we estimate
“Estimate” = a value we infer, never one we read.
What counts as an estimate
- A point at a county, state or country center: the source names the area, not the site.
- A GB project at its substation or a named place: the source names that, not the site.
- A data center’s MW estimated by another body (Epoch AI): its own row, never stated or totalled.
- Not estimates: a source’s coordinate, a stated or EIA-860 MW, an EIA-923 capacity factor, a license-moved county point.
On the other tabs
What is not here, status words and the glossary
- Sources registered
- 239
- With rows flowing
- 53
- Ownership depth
- 48,119 of 50,272 companies: no parent on record
- Existing assets: sources per type
- Status values no source produces
- ERCOT publishes no request-level large-load data, so no Texas large-load request is listed.
- Interconnection queues withheld pending licence clearance: PJM and MISO.
- Most companies have no recorded parent.
- Coverage is US-first, with three non-US feeds.
- RNG projects: two EPA sources, covering different populations.