TerraPower’s Molten Salt Reactor Offers a Solution for AI Power Needs

While traditional nuclear plants struggle to ramp output up or down to match the volatile demands of AI training, TerraPower’s 345-megawatt molten salt-cooled reactor handles this by decoupling steam generation from the reactor core. Instead of adjusting the rate of nuclear fission, the plant stores excess heat in a massive vat of molten sodium. When demand from a data center spikes, the facility taps into this thermal reservoir to spin its turbines, allowing the core to continue operating at a constant, profitable capacity.

This storage capability serves as a buffer against the intermittent nature of modern energy grids. Because data centers often experience abrupt shifts in power draw as GPUs process tasks, they typically rely on expensive battery banks to stabilize the load. TerraPower’s design effectively integrates this stability into the power plant itself. With the company’s first Natrium plant currently under construction in Wyoming and a deal already in place to supply Meta with eight reactors, this flexible approach positions the startup to capture a significant share of the burgeoning market for AI-dedicated energy.