Data center project · King County, Washington

Equinix and Prologis data center power requests, Seattle City Light

Paused by moratorium · Three large data centers that Equinix and Prologis asked Seattle City Light to power, still pending when Seattle froze data center siting.

← Washington data centers
Adams CountyAsotin CountyBenton CountyChelan CountyClallam CountyClark CountyColumbia CountyCowlitz CountyDouglas CountyFerry CountyFranklin CountyGarfield CountyGrant CountyGrays Harbor CountyIsland CountyJefferson CountyKing CountyKitsap CountyKittitas CountyKlickitat CountyLewis CountyLincoln CountyMason CountyOkanogan CountyPacific CountyPend Oreille CountyPierce CountySan Juan CountySkagit CountySkamania CountySnohomish CountySpokane CountyStevens CountyThurston CountyWahkiakum CountyWalla Walla CountyWhatcom CountyWhitman CountyYakima CountyEquinix and Prologis data center power requests, Seattle City Light · Paused by moratorium
Status
Paused by moratorium · as of June 9, 2026
Location
Seattle (sites not disclosed) · King County
Status note
Seattle's June 9 emergency moratorium freezes siting of new data centers above 20 MVA; no source reports how it applies to these specific requests.
Power
Not reported
No figure per facility. The Seattle Times reported that the three facilities together could use 249 MW, so that combined figure is not listed as one project's power.
Developer and team
Equinix; Prologis
Utility
Seattle City Light
Evidence
News reports; primary records not yet obtained
Size class
Under 50 MW (outside main scope; kept for completeness)
Map position approximate, from the reported address or area. Updated Oct. 17, 2026.

Updates, newest first

  1. June 9, 2026 The City Council unanimously passed an emergency moratorium on new data centers above 20 MVA, noting that four companies had sought power for five facilities with a combined maximum demand of 369 MW. (Seattle City Council, June 9, 2026)
  2. May 1, 2026 The Seattle Times reported the Equinix and Prologis requests (249 MW for three facilities) were still pending after two other requesters withdrew. (The Seattle Times (republished by The Spokesman-Review), May 1, 2026)

Conflicts and open questions

  • Sites and the split between the two companies were not reported.
  • No source confirms the companies filed land-use applications.

Have records about this project? Send them to tips@signaldata.org.