Seattle city council committees voted unanimously Wednesday to advance a year-long moratorium on new data center construction, putting the city on track to become the largest U.S. municipality to impose such a pause as backlash against the AI industry’s energy and resource demands spreads nationwide.
Four companies sought to build five large data centers in areas served by Seattle City Light, the city’s public utility. City officials said the facilities would have consumed approximately one-third of the city’s current daily demand for electricity.
A full council vote on the moratorium and an accompanying resolution is scheduled for Tuesday, which activists described as a formality after weeks of engagement with city officials. Council committees also unanimously passed the resolution Wednesday.
Mayor Katie Wilson said she first learned of the developers’ ambitions from a Seattle Times report in April.
“That was the first that I, as the mayor, had heard about this,” Wilson said. “Both I and many of the councilmembers were happy to move toward a moratorium, especially knowing that there was really strong public support out there for that course of action.”
Eddie Lin, who chairs the council’s land use and sustainability committee, received more than 10,000 emails from local residents in favor of the moratorium, according to his office. During a public comment period at city hall on May 20, over 50 Seattle residents spoke in favor of the measure while none spoke against it, officials said.
The swift response in the corporate home of Amazon and Microsoft represents a significant setback for the technology industry. Seattle’s metro area has seen thousands of local tech workers laid off over the past year as the industry spends a projected $390 billion on AI investments in 2026, according to the Guardian. Seattle tech workers have turned out in large numbers to organize against the proposed data centers, activists said.
Ben Jones, a spokesperson for the climate justice group 350 Seattle, said the breadth of opposition reflected limited avenues for residents to shape AI’s local impact.
“A lot of people came forward because of a lack of other ways to voice or have any control over AI’s rollout,” Jones said. He noted a “huge number” of tech workers participated, because AI is now locally “synonymous with people losing their jobs.”
Activists intentionally favored a year-long moratorium over a full-out ban because the former strategy could assemble a larger coalition, Jones said. He added that delays caused by a moratorium may still defeat the data centers’ construction: if an AI market bubble bursts in the coming year, the facilities are unlikely to be built.
The moratorium and accompanying resolution enable Seattle City Light to establish separate electricity rates for new “large load” customers, a category that includes large data centers. An amendment allows existing data centers in Seattle to apply for expansions requiring up to 20 megawatts of additional power during the pause.
During the moratorium, officials may establish pollution standards, energy connection requirements and contract terms, labor standards, and other rules specific to data centers. The pause would also allow the city to determine whether data centers are a “good use of urban land,” Wilson said. If so, officials may draft public benefit requirements, such as requisite investments in affordable housing and transit projects, in exchange for approval — stipulations, Wilson said, “that are sometimes put on development that’s of questionable value to the community.”
“Is there a world in which we would want a large data center in Seattle? I think the answer to that is unclear,” Wilson said.
Nivi Achanta, a former tech consultant who now works as a climate activist in Seattle, said the consolidation of large tech companies in the city paradoxically makes it easier for tech workers to organize against the sector’s overreach.
“I do think the consolidation of these large tech companies makes it easier to find the backlash, and to see very easily that you’re not alone,” she said. Through internal messaging and public-facing campaigns, employee-activist groups such as Amazon Employees for Climate Justice have “primed” Seattle’s tech workers to translate their feelings about where the sector is headed into real political engagement, she added.
Tech workers in Seattle and elsewhere see that AI has helped make them “more productive, but also more disposable,” Achanta said.
Debora Juarez, who chairs the committee overseeing Seattle City Light and is an enrolled member of the Blackfeet Nation, said the data centers’ water use could threaten local Indigenous groups’ treaty and water rights, spurring tribes to be among the first to organize against new data centers.
“While we cannot look to the federal government for leadership, we can look to tribal governments,” Juarez said, adding that the city consulted with tribal lawyers and other groups to learn about effective regulation of data centers.
Wilson said the city would advocate for statewide legislation during the next Washington state legislative session. She added that the city government should help build a more diversified local and regional economy, as the current economy, workforce, and tax structure are “extremely dependent upon” the tech industry, a sector whose future features “a lot of uncertainty.”
Audrey Wang Gosselin, an electrical engineer and a board member of 350 Seattle, said the organization was working with groups in other parts of Washington state and sees a Seattle win against data centers as a replicable regional roadmap.
“If we’re able to show that we say no to it in Seattle, where you would assume it might be more techy, I think that will hopefully set precedent for the rest of the state, potentially the rest of the country,” Wang Gosselin said.
The Seattle action follows a series of similar moves by other jurisdictions. MSI previously reported that Monterey Park, California, voted to permanently ban data centers on June 3 — the first U.S. city to do so — while Maine’s legislature approved the nation’s first statewide data center moratorium bill in April before the governor vetoed it. Other local governments including New Orleans, Hill County Texas, and Ypsilanti Township, Michigan, have imposed temporary pauses on data center development over the past year.
Activists said they are also gearing up for the next stage in their organizing, with 350 Seattle working with groups elsewhere in Washington state to replicate the strategy.