Seattle’s cheap hydropower has long drawn data center operators. Now, that lure is sparking a fierce backlash. Four companies approached Seattle City Light with plans for five massive facilities, eyeing a combined peak demand of 369 megawatts—about one-third of the city’s average daily power use. One firm backed out. Prologis, Equinix, and Sabey press on, targeting southern Seattle sites still in preliminary engineering. No formal applications yet. But the proposals ignited alarm.
Existing data centers number around 30 in the city. Most small. These newcomers? First at hyperscale. Full tilt, they’d guzzle nearly 10 times the power of what’s there now. Seattle City Light, strained by low snowpack and wholesale power buys, faces rate hikes already. The utility’s rewriting large-load contracts: operators must source their own generation, foot infrastructure bills. “This cannot go back to the ratepayer,” said Andy Strong, the utility’s environmental, engineering, and project delivery officer, in a Seattle Times report.
News broke April 10. Outrage followed fast. Activist groups like 350 Seattle and The Troublemakers launched a letter campaign via Action Network. Over 54,000 emails flooded council inboxes and Mayor Katie Wilson’s office in days. “Seattle’s resources are already stretched thin — we should not put more strain on the system to help the largest and most profitable companies in the world grow larger and more powerful,” the template read. Ben Jones, 350 Seattle spokesperson, credited the push for shifting the conversation.
Washington’s in drought emergency—fourth straight year. Hydropower falters. “These companies want to build here because of our traditionally cheap hydropower, but everywhere that they have been built, what we are seeing is electricity rates skyrocketing for regular folks,” said Evan Sutton of The Troublemakers. His TikTok video hit 32,000 views. Lauren Redfield, co-chair of Seattle DSA’s eco-socialism group, added: “We need more power in Seattle already. We’re maxed out in terms of our hydro power.” She called for scrutiny beyond city lines, into King County.
Mayor Wilson responded April 18. No green lights issued, she stressed. In a Facebook post and official statement on seattle.gov, she wrote: “It is important to know that the City of Seattle has not authorized nor permitted any new data centers. However, the prospect of massive new data centers being built in Seattle has raised understandably intense public alarm. I share community concerns about environmental justice, economic resilience, and impacts of increased costs for Seattle rate payers. That’s why my team is working closely with Seattle City Light, City Council and stakeholders to identify a range of long-term policy approaches, including exploring a moratorium on siting new centers.” (GeekWire; Seattle Times)
A Moratorium in Motion
Councilmembers jumped in. Eddie Lin got thousands of emails. “They just keep coming… It was such a quick outcry,” he told the Seattle Times. A moratorium buys time for rules. Alexis Mercedes Rinck and Lin probe policy shapes. Labor watches close. Monty Anderson of the Seattle Building and Construction Trades Council: “We’re always for making the city better and competitive… anything the mayor is doing, it’ll discuss with labor.” Seattle City Light stays measured: “These proposals are in early stages and at this time no developers have committed to building these facilities and no applications have been filed,” per a KIRO 7 report.
Companies silent so far. Prologis boasts a 5.7-gigawatt power bank nationwide. Equinix runs global hubs. Sabey, Tukwila-based, eyes local expansion—3.5 MW available now in Seattle, 12 MW pre-leasing by 2027. Decisions loom in two to three months. Pat Lynch of CBRE: “Cost is always going to be important, but availability is equally as important now.” (Seattle Times)
But Seattle’s standoff mirrors a national surge. AI fuels the boom—Microsoft, Amazon pouring billions. Data centers worldwide could triple power needs by 2028. States push back. Maine’s legislature passed the first statewide moratorium; Gov. Janet Mills weighs veto. (New York Times) Denver council eyes pause. (Denver Business Journal, April 1) Florida’s Paul Renner calls for AI data center moratoriums over aquifer strain. X chatter echoes: calls for bans until impacts clear.
Seattle City Light juggles electrification, densification, EVs alongside. Engineers stretched. “We only have so many engineers. We only have so many project managers. It’s going to have an impact,” Strong warned. Ratepayers foot recent hikes after reserves drained. A moratorium? It halts permits temporarily. But developers chase power anywhere. Push them south, neighbors gripe. Keep ’em? Bills climb. Tech needs compute. City weighs resilience against growth.
Wilson’s “exploring.” Not committing. Public pressure mounts. Council deliberates. Companies decide soon. Seattle’s grid hangs in balance. Power politics, local flavor.
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