Amazon Madison Mega Site · Madison County, MS
Last change recorded 2026-10-04 · Last checked 2026-10-04
Latest: Buildings 8-12 estimated operational (Epoch) · Full build-out complete · 2028-03-15 (plan) · recorded 2026-10-04
AWS Canton campus, announced January 2024 as a $10bn record investment; construction to be completed by 2027. Served by Entergy Mississippi under the March 2024 agreement, with new solar farms (Hinds, Washington, Tallahatchie) and gas plants. Epoch estimates buildings 8-12 operational in March 2028. · source ● primary, confidence medium
Recorded readiness — 2 of 6 applicable milestones have a dated public record
Gate to first power — target 2025-06-23 (estimate) · path: Grid, with new utility generation · each step must finish its lead time before the target
1 of 1 required steps have a public date. Red = recorded date past the rule-based deadline · grey "no public date" = required step without a record · green = on record in time · context steps never colour.
| Step | Must finish by | Others did it | Known date | Status | Basis | |
|---|---|---|---|---|---|---|
| Site secured (context) | 2024-03-23 (15 mo before) | 13 mo before (n=26) | 2024-01-24 | context | AWS $10bn Mississippi investment announced · ● | |
| Grid supply agreed | 2024-09-23 (9 mo before) | 7 mo before (n=11) | 2024-03-08 | on record in time | Entergy Mississippi large-customer agreement · ● | |
| Full build-out complete (context) | 2026-06-23 (-12 mo before) | — | 2028-03-15 plan | context | Buildings 8-12 estimated operational (Epoch) · ● |
This site is energized; lights only show how its recorded steps compared with the lead times.
Lead-time assumptions
- Site secured 15 months before first power — Land under control and campus announced. Rarely binding; shown for context.
- Permits in hand 0 months before first power — Final air and siting permits. Operators often energize on standard or temporary authorisations and receive the major permit later; flagged only when the permit lands more than 6 months after first power or is missing for an on-site plant.
- Grid supply agreed 9 months before first power — Interconnection or large-load agreement approved. Observed median 7 months before first power; the physical works (substation, lines) run in parallel with construction.
- Substation and lines energized 2 months before first power — Utility delivery point live; final tests before the load is taken.
- New generation online 1 months before first power — Utility plant or on-site plant generating; needed just before energization when the grid cannot carry the load alone.
- Major equipment on site 6 months before first power — Turbines, transformers, switchgear delivered; installation and commissioning take the remaining months.
- Construction started 24 months before first power — Groundbreaking of the building that gives first power. Observed 4-26 months for recent AI campuses; Meta's redesigned campuses took 35-58.
- Building ready for IT 0 months before first power — First building ready for IT. 'Complete' or 'opened' is usually reported after first power; flagged only beyond 3 months.
- Full build-out complete -12 months before first power — All announced buildings operational. Comes after first power by design; context only.
- Water supply secured 12 months before first power — Water rights, municipal agreement or desalination contract in hand. Context only; one of the feasibility items.
- Financing closed 12 months before first power — Project financing, anchor lease or committed capital announced. Context only; not applicable when the owner is a hyperscaler building on its balance sheet.
Dated steps (from the sources; later dates are plans)
Power equipment (from permits, filings and reporting; blank cells were not disclosed)
| Category | Make / model | Units | MW | Status | Date | Note |
|---|---|---|---|---|---|---|
| combined-cycle gas turbine | — | 2 × 754 MW | 1.5 GW | under construction | 2028-08-31 | Entergy Mississippi Vicksburg APS (August 2028) and Delta Blues APS at Greenville (2028); two of three new 754 MW plants serving the Amazon campuses · ○ |
Build-out timeline (Epoch AI; dated status notes with IT power; rows after today are estimates)
Recorded fact The site is energized.
Calculated requirement Energized; watch the build-out timeline for the next buildings.
Sources (Epoch AI selection): Air Construction Permit · Backup diesel generator referenced in the permit · New York Times article on Project Rainier · SemiAnalysis article with imagery of Canton they have labeled as being an Amazon-Anthropic collaboration
Epoch AI, 'AI data centers', epoch.ai/data/ai-data-centers (CC BY 4.0); coordinates from GeoNames cities500 (CC BY 4.0) and hand-entered places; overrides in tools/project_overrides.csv with their own sources. Campuses outside the Epoch dataset come from tools/campuses.csv (public reporting, source per row). Data retrieved 2026-10-05. Report a correction to contact@ailoadmap.com (campus id amazon-madison-mega-site; include the row and a source link).