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Seattle Approves Year-Long Ban on New Large Data Centers
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Seattle Approves Year-Long Ban on New Large Data Centers

WireByte Staff · June 10, 2026

Seattle's City Council has unanimously approved a one-year moratorium on new large data center construction, pending the mayor's signature. The move addresses concerns over significant electricity and water consumption, as five proposed projects could have demanded a third of the city's current power. This impacts developers rather than existing tech giants.

Key points

  • The Seattle City Council has unanimously approved a one-year moratorium on new large data center construction, pending the mayor's signature.
  • The moratorium targets facilities requiring more than 20 megavolt-amperes of energy, which could collectively consume up to a third of Seattle's current electricity supply.
  • The ban primarily affects data center developers and third-party providers, rather than existing tech giants like Amazon and Microsoft.
  • The council has mandated a study to assess the long-term impacts of AI data centers on the city's utilities, infrastructure, and public welfare.
  • The moratorium aims to address concerns over significant electricity and water consumption, as well as issues of noise pollution and land use.
  • The mayor is expected to sign the moratorium into effect soon, making it a reality for the next year.

Seattle is poised to implement a year-long ban on the construction of new large data centers. The City Council has given unanimous approval to the moratorium, with the mayor expected to sign it into effect soon. This decision stems from significant concerns raised by residents and city officials regarding the substantial electricity and water demands of such facilities.

Reports indicated that five recently proposed data center projects alone could collectively consume up to a third of Seattle's current electricity supply. Alongside energy usage, issues of water consumption, noise pollution, and land use were cited as reasons for the temporary prohibition. The moratorium specifically targets facilities requiring more than 20 megavolt-amperes of energy, a capacity sufficient for thousands of homes.

While major tech companies like Amazon and Microsoft have a strong presence in the Seattle area, the ban is primarily expected to affect data center developers and third-party providers, as these tech giants do not currently operate large data centers within the city limits. The council has also mandated a study to thoroughly assess the long-term impacts of AI data centers on the city's utilities, infrastructure, and public welfare, which will inform potential permanent regulations.

Sources

WireByte Staff — Editorial Team

The WireByte editorial team synthesises technology news from multiple primary sources, verifies the facts, and links every source. Articles are produced with AI assistance and reviewed under our editorial policy.