Electricity rates in Washington state are set to rise sharply over the next three years, with Puget Sound Energy proposing a 17% increase next year and nearly 30% by 2029, according to a report published June 22, 2026, by the Washington Policy Center. The analysis finds that state climate laws, not data centers or artificial intelligence, are the primary drivers behind rate hikes hitting both investor-owned and public utilities across Washington. Seattle City Light raised rates 6% this year and expects increases of nearly 10% annually in 2027 and 2028, while Avista proposed a 14% jump next year and 25% by 2030.

Despite widespread speculation that data center growth is fueling the increases, electricity demand from Puget Sound Energy customers has remained essentially flat for the last decade. Retail electric sales statewide in 2024 were actually lower than in 2012, and regional sales grew just 1.3% per year between 2016 and 2024. Puget Sound Energy confirmed to the report's author that "none of this growth is data-center driven." Current and projected demand increases stem primarily from electric vehicle adoption and home electrification. The Pacific Northwest must add 1,600 megawatts of effective capacity per year for the next decade—equivalent to building two Snake River dams annually—but that's due to population growth and electrification mandates, not AI infrastructure. PacifiCorp is currently litigating about $1 billion in wildfire damages from 2020, illustrating the scale of liability utilities face.

The report identifies Washington's Clean Energy Transformation Act (CETA) as playing a "big role in driving cost increases," requiring utilities to reach 80% non-emitting electricity generation by 2030. Rick Dunn, CEO of Benton County PUD, stated that increases are primarily the result of utilities "scrambling to acquire scarce wind, solar and battery power to meet carbon-free mandates while keeping the grid reliable." The Northwest Power and Conservation Council noted that "significant increases in variable energy resources, such as solar and wind, have added a greater band of uncertainty in system operations," making reliability more expensive. Washington's Utilities and Transportation Commission acknowledged that "a number of changes were real costs associated with statutory obligations, primarily the Clean Energy Transformation Act and the Climate Commitment Act." Puget Sound Energy says approximately $4 billion of their $9 billion rate request is specifically to comply with CETA's renewable requirements.

The report explains why renewable mandates drive costs up even when wind and solar appear cheap per kilowatt hour. While those sources cost about 25% less than natural gas per unit of energy when generating, their "effective capacity"—the amount utilities can rely on during peak demand—is far lower. In winter, when Washington's electricity demand peaks, less than 10% of wind power can be counted on during those critical periods because the coldest days are often windless across the entire Northwest. A study by Energy and Environmental Economics found that the effective cost of wind and solar is nearly four times higher than natural gas when accounting for reliability needs. Utilities must replace dependable natural gas with wind and solar sources that require massive overbuilding—roughly three times as much wind capacity and four times as much solar—to keep lights on during cold, still winter days. They're racing to complete this expensive transition before CETA's first compliance period between 2030 and 2034, which means costs will keep climbing regardless of whether any new data centers get built.

The report recommends that the legislature recognize its goals are "unreasonable and are driving up costs," allow utilities to build natural gas plants when blackout risk is too high, and shift to transparent time-of-use pricing so consumers can control costs by using electricity when it's cheap. The authors warn that electricity rates will continue rising in Washington, and the only way to slow increases is to focus on the real cost drivers: state laws and regulations. Blaming data centers and corporate profits, the report concludes, is "a useful way for politicians to distract from their own culpability but won't reduce the pain being felt by families across the state."