How big is Amazon Walla Walla County Data Center?

Not disclosed. No source on file gives its capacity, its acreage or a count of buildings. What the record holds instead is under Disclosed.

Who is building Amazon Walla Walla County Data Center?

Amazon is the developer. No construction contractor is named on the record yet.

Who will use Amazon Walla Walla County Data Center?

Not disclosed. No source on file names a tenant, says whether the site is single or multi tenant, or states what it is for. The record keeps the use as not disclosed until one does; see Who it serves.

How much power and water does Amazon Walla Walla County Data Center say it needs?

Power: not disclosed by any source on file. Water: not disclosed by any source on file.

Where does Amazon Walla Walla County Data Center stand today?

It is reported, as reported February 12, 2026. The newest entry, reported February 12, 2026: Advance Phase LLC purchased approximately 500-553 acres in October 2024 for $32.5 million to $36 million [1].

What has Walla Walla County decided about it?

No decision by Walla Walla County about data centers is on the record. The Walla Walla County page and the Washington scorecard list every rated row the day a person publishes one.

What is still unknown about Amazon Walla Walla County Data Center?

Not disclosed by any source on file: how much power it needs, how much water it would use, how loud it would be, jobs once it runs, tax it would pay each year, who is constructing it, how much land, grid connection, how it is cooled. No missing primary document is listed for this record yet; What the record lacks is where one appears when a person names it.

Reported Built from one source

Amazon Walla Walla County Data Center

Amazon held an open house for a proposed data center in Walla Walla County that drew public debate. It is reported, as reported February 12, 2026.

How much power it needs, how much water it would use and who would use it have not been disclosed.

Last verified September 25, 2026 · 3 sources, 0 primary · A skeleton record: built from one source, not yet reviewed in depth by a person. · How to read this page

How to read this page. Every fact links to the source it rests on; a number in brackets is its place in the source list. A figure no source gives reads Not disclosed, and nothing is estimated. Where sources give different figures, each is shown with who gave it, and another source's figure never stands in for the record's own. Entries are added and never overwritten; corrections are listed under What happened.

What is known

Each figure as its source gave it. The number in brackets is its place in the source list.

Land: Not disclosed
Power it would draw: Not disclosed
Water: Not disclosed
Who leads it: Amazon; as stated by the source
Who would use it: Not disclosed
Jobs once it runs: Not disclosed
Tax each year: Not disclosed
Where its power comes from: Nuclear power: four SMRs offering up to 320 MW capacity; as stated by the source [1]

Every field, with who said it and when (Researcher view)

Impact figures

Field	Value	Who says so	Source	Last verified
How much power it needs	Not disclosed
How much water it would use	Not disclosed
How loud it would be	Not disclosed
Jobs once it runs	Not disclosed
Tax it would pay each year	Not disclosed

The record's fields

Field	Value	Who says so	Source	Last verified
Who is building it	Amazon	as stated by the source		September 25, 2026
Who is constructing it	Not disclosed
How much land	Not disclosed
Where its power comes from	Nuclear power: four SMRs offering up to 320 MW capacity	as stated by the source	[1] datacenterdynamics.com	September 25, 2026
Grid connection	Not disclosed
How it is cooled	Not disclosed

The developer's figure is what the company said; what a permit allows is the ceiling a permit sets; measured means observed. Water is in gallons a day or a year, whichever the source stated; a tax claim given as a range shows both ends, each linked to the source that gave it.

Still not public, and where it would show up

The record adds each the day a source gives it. Why these documents.

Water useA state water right filing or a water supply agreement.
Who would use itA lease announcement or a tenant named in a filing.
Power the campus would drawA utility or public service commission docket, an interconnection filing, or an air permit for an on site plant.
Jobs and taxAn incentive agreement, a county's economic development filing or a fiscal note.

What happened

Reported February 12, 2026 · Status: rumored (source date; the content gives no date of its own)

Advance Phase LLC purchased approximately 500-553 acres in October 2024 for $32.5 million to $36 million [1]

The full Amazon Walla Walla County Data Center timeline, in order

1 correction to this record

1 source tier relabel, September 23

Every correction, with its reason

September 23, 2026 · the kind of source of a history entry

The source was labeled with the Google News search that found it; it now carries its outlet's tier (the record's rules of 2026-09-23). The link did not change. The day's label corrections.

Every correction on the record is on the corrections page.

The site

Where in Walla Walla County is not in the public record. The pin marks the county seat, not a building, and the outline is the county.

This record: Proposed, ringed
data center
Dashed edge: the exact site is not in the public record
Smaller pins: 13 other published records in Washington

Details

this record's location, ringed
parcel outline, from the county parcel record
city limits, U.S. Census Bureau, on a town level record
county boundary

The other pins are the published projects in the same state, each in its stage color. The imagery beneath is the USGS national orthoimagery, public domain, shown so the land around the site can be read.

Where: Walla Walla County, Washington
How exactly it is located: County level, the county seat
The parcel: No parcel outline in the public record
Nearest homes: Not computed for a record placed at a place center
Nearest records: Nearest records are not computed for a record placed at a county seat.

Comparisons

1 metric with more than one figure

Every figure on the record for the same thing, the record's own or the document's first, each with who gave it, its date and its basis.

Project footprint

1 figure, 1 source

125 acresReported

www.datacenterdynamics.com, Feb 12, 2026

Show each source's words

125 acres, www.datacenterdynamics.com: Project planned in four phases of 125 acres each, with four 215,000 sq ft buildings per phase, totaling more than 3.4 million sq ft

Keep going

The county Walla Walla County 1 project on the record. The state Data centers in Washington Every Washington project, the rules on the record and what comes next.

Questions about this project

7 questions answered from the record

Answered from the rows on this page.

How big is Amazon Walla Walla County Data Center?: Not disclosed. No source on file gives its capacity, its acreage or a count of buildings. What the record holds instead is under Disclosed.
Who is building Amazon Walla Walla County Data Center?: Amazon is the developer. No construction contractor is named on the record yet.
Who will use Amazon Walla Walla County Data Center?: Not disclosed. No source on file names a tenant, says whether the site is single or multi tenant, or states what it is for. The record keeps the use as not disclosed until one does; see Who it serves.
How much power and water does Amazon Walla Walla County Data Center say it needs?: Power: not disclosed by any source on file. Water: not disclosed by any source on file.
Where does Amazon Walla Walla County Data Center stand today?: It is reported, as reported February 12, 2026. The newest entry, reported February 12, 2026: Advance Phase LLC purchased approximately 500-553 acres in October 2024 for $32.5 million to $36 million [1].
What has Walla Walla County decided about it?: No decision by Walla Walla County about data centers is on the record. The Walla Walla County page and the Washington scorecard list every rated row the day a person publishes one.
What is still unknown about Amazon Walla Walla County Data Center?: Not disclosed by any source on file: how much power it needs, how much water it would use, how loud it would be, jobs once it runs, tax it would pay each year, who is constructing it, how much land, grid connection, how it is cooled. No missing primary document is listed for this record yet; What the record lacks is where one appears when a person names it.

Sources

Primary documents first: filings, minutes, dockets and official pages. Then reporting. The numbers are the ones the entries above cite.

Reporting

AWS likely behind $4.8bn data center in Walla Walla, Washington, www.datacenterdynamics.com, February 12, 2026, trade press
Public comment period opens for proposed Amazon data center in Wallula, elkhornmediagroup.com, September 15, 2026, local outlet
Amazon open house draws debate over Walla Walla County data center - Nonstop Local News, Nonstop Local News, August 12, 2026, local outlet

3 sources on file.

Cite this record

Data Center Record, "Amazon Walla Walla County Data Center", https://datacenterrecord.org/projects/amazon-walla-walla-county-data-center-wa, last verified September 25, 2026.

Last verified September 25, 2026, first recorded September 5, 2026. Every correction is logged on the corrections page and under What happened.

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Cite this page

Data Center Record, "Amazon Walla Walla County Data Center", https://datacenterrecord.org/projects/amazon-walla-walla-county-data-center-wa. Data: Data Center Record, datacenterrecord.org, CC BY 4.0.

The structured rows are CC BY 4.0. Link to this page; that is what turns a reuse into a citation. Prose stays under copyright.

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For researchers

Slug: amazon-walla-walla-county-data-center-wa
Status value: rumored
Stage: Proposed
Tier: skeleton
Tags: skeleton
Place id: us/wa/walla-walla-county
Coordinates: 46.065, -118.33028
Location precision: county
Location source: County seat (Walla Walla), Wikidata, placed at county level
Coordinate source: wikidata county seat
Location source number: Not disclosed
Location last verified: September 16, 2026
EPA registry id: Not disclosed
Use type values: not_disclosed
Tenancy value: not_disclosed
Cooling type value: not_disclosed
Capacity basis: not_disclosed
Water basis: not_disclosed, gallons_per_day
Acreage basis: Not disclosed
Interconnection value: not_disclosed
Capacity, if disclosed: Not disclosed
Rating of the county's rows: Not disclosed
Published: 2026-09-05
Last verified: 2026-09-25