Annual energy demand in the Pacific Northwest could reach between 31,000 and 44,000 aMW by 2046, according to the Northwest Power and Conservation Council’s (NWPCC) initial 20-year forecast.
The initial 20-year demand forecast, released April 29, does not account for cost-effective efficiency, rooftop solar or demand response that could reduce electricity demand. Council staff intends to release the final forecast by the end of 2026 after deciding how much of those resources they should include, according to a news release.
The council is required under the Northwest Power Act “to develop a plan to ensure an adequate, efficient, economical and reliable power supply for the region.” NWPCC publishes a plan every five years, according to the council’s website. (See NWPCC Considers Trump, Data Centers in Regional Power Plan.)
“Thanks to many months of work by Power Division staff, collaboration with regional partners and our new computer modeling capabilities, we now have a deep understanding of the potential future energy needs of our region,” Jennifer Light, power planning director at NWPCC, said in a statement.
“This will help us develop the cost-effective resource strategy that will be robust across future load growth trajectories, while ensuring the Pacific Northwest’s power grid continues to be adequate, efficient, economical and reliable over the next two decades,” Light added. “We won’t take on this task alone. We invite and encourage public participation and collaboration from across the Northwest as we plan for the future of our power system throughout 2025 and 2026.”
Since 2010, energy consumption in the Pacific Northwest region has hovered “around 20,000 average megawatts to 22,000 average megawatts,” Steven Simmons, senior energy forecasting analyst at NWPCC, said during a presentation of the initial forecast.
The region experienced a winter peak of approximately 35,500 MW in February 2025, an increase over the previous winter peak of 35,100 MW in 2023. The region reached a summer peak of 33,300 MW in July 2024, according to the news release.
Demand and peaks are showing no signs of slowing down.
The council tested five scenarios, and energy growth increases under all scenarios. The annual energy demand is projected to reach between 31,000 and 44,000 MW by 2046, depending on the scenario, and peak demands will range between 47,000 and 60,000 MW, the council stated.
Though there is a mix of winter and summer peaking, historically the Pacific Northwest region is winter peaking. “However, in our forecast, we’re starting to see more summer peaks creep in, for sure, and definitely in some of the specific futures,” Simmons said.
But the largest growth is expected from electric vehicles and data centers, according to the forecast. A major driver of the electric vehicle forecast is transportation policies in Oregon and Washington, said Tomás Morrissey, senior analyst with the council.
“Probably the biggest driver in the model is the 100% new light-duty vehicle standards in Oregon and Washington that stipulate that light-duty vehicles starting in 2035 have to be electric,” Morrissey said. “And as you can imagine, that increases load across the system leading into 2035 as sales are ramping up and then continuing past 2035 as the vehicle stock turns over and becomes more and more electrified.”


