Seattle council approves one-year pause on new large data center applications

Seattle moved on June 9 to put a one-year emergency pause on new large data center applications, a step city leaders say is meant to slow down a fast-moving land-use and utility issue before it turns into a long-term decision about costs, infrastructure and zoning.

The Seattle City Council passed CB 121214, and Mayor Katie Wilson signed the ordinance on June 11. Because the measure was declared an emergency, it took effect immediately. The policy pauses the filing, acceptance, processing or approval of applications tied to the establishment, expansion or change of use for large data centers while the city studies next steps.

What the pause covers

The city’s definition is narrow. In the council’s summary, data centers are facilities primarily used to store and process digital data that require more than 20 megavolt-amperes of power and uninterruptible power. The ordinance is aimed at those large-scale projects, not every digital infrastructure use or every utility project in Seattle.

The moratorium can be extended for up to six additional months if needed, and the council says a public hearing is required within 60 days.

Why Seattle acted

City officials say the issue reaches beyond planning paperwork. In the legislation and council summary, they point to electrical-grid capacity, power demand, water use, utility rates, land use, local jobs, the economy and public health. Council leaders said the city needs time to study the impact before setting a permanent policy.

Seattle City Light has made a similar case in its own policy work. In a June 12 post, the utility said growing data-center demand could add pressure to grid infrastructure and raise questions about who pays for new energy, transmission and other investments. The utility said it wants new large data centers to move into a separate rate class so those customers bear more of the infrastructure cost themselves.

Why residents and businesses should care

For residents, renters and small businesses, the immediate effect is less about a bill change overnight and more about how Seattle handles future large-load projects. For developers and property owners, the practical question is whether new large data center filings can move forward during the moratorium window.

KUOW reported that existing data centers can continue operating and expanding within the new rules, while the city’s broader policy review continues. That means the central question now is not whether Seattle will keep talking about data centers, but what permanent rules, rate structures and land-use standards might replace the temporary pause.

Sources

• Seattle City Council legislation record for CB 121214
• Seattle City Council blog: emergency data center moratorium and policy framework
• Seattle City Light Powerlines blog: Getting ahead of data center power demands
• KUOW: Seattle data center ban heads to Mayor Wilson’s desk