TerraPower and SoftServe Build an NVIDIA Omniverse Digital Twin to Cut Natrium Reactor Site Engineering From 18 Months to Eight Weeks
A digital twin built on NVIDIA Omniverse aims to compress site-specific design for TerraPower's Natrium reactor from 18 months to as little as eight weeks.
Overview
TerraPower and the digital engineering firm SoftServe have released a preview demonstration of an NVIDIA Omniverse-powered engineering platform that the company expects will accelerate the siting and design of its Natrium sodium fast reactor, according to the American Nuclear Society. The AI-powered digital twin is designed to compress what once took engineering teams years into weeks by analyzing thousands of variables simultaneously, according to TerraPower.
The headline claim is a sharp reduction in early-stage engineering: the platform reduces site-specific design work “from 18 months to as short as eight weeks,” according to TerraPower. The same figure was reported by Nuclear Engineering International, which described the tool “reducing site-specific design work from 18 months to as little as eight weeks.”
What We Know
The platform is built on the NVIDIA Omniverse operating system and embeds plant designs into geotechnical modeling, grid interconnection analysis, and site-specific layout optimization, according to TerraPower. Site-specific engineering work that traditionally takes 18 months can be completed in as little as eight weeks, with the system letting engineers analyze thousands of variables simultaneously in a process that previously required years of manual calculation and cross-departmental coordination, as reported by Interesting Engineering.
Eric Williams, Executive Vice President and Chief Operating Officer at TerraPower, framed the effort around speed to market. “With our initial Natrium plant design complete, we are able to leverage our partnerships with NVIDIA and SoftServe to deploy an AI-powered digital twin to enhance our engineering teams efforts,” Williams said, according to TerraPower. In a separate statement, he added: “To meet growing power demand, advanced nuclear plants must move to construction faster, with higher design precision and disciplined execution,” according to SVI-NEWS.
Dennis Loktinov, Senior Director of Enterprise Solutions at SoftServe, described the problem the tool is meant to solve: “Nuclear site engineering has always been expensive to get wrong—and until now, teams couldn’t really see the constraints until they were already committed to a layout,” as reported by Interesting Engineering. “What we built with TerraPower on NVIDIA Omniverse changes that. Exclusion zones, terrain conflicts, cost tradeoffs—all of it is now visible in 3D, in real time, before a single dollar goes to construction,” Loktinov said, according to SVI-NEWS.
Marc Spieler, Senior Managing Director, Energy at NVIDIA, said: “Using simulation and AI powered by NVIDIA, TerraPower and SoftServe are transforming how the world designs, licenses, permits, builds and operates advanced nuclear power plants,” according to SVI-NEWS.
The Reactor Behind the Tool
The digital twin targets the Natrium design, a 345-MW sodium-cooled fast reactor paired with an integrated molten-salt energy storage system, according to POWER Magazine. That storage lets the plant boost net electrical output to 500 MW when needed while maintaining constant reactor power, delivering 500-MWe for more than five and a half hours, also according to POWER Magazine. TerraPower says the design can be deployed in single, dual, or quad configurations offering between 500 MW and 2 GW of power, according to TerraPower.
The first unit is under construction at Kemmerer, Wyoming, near the retiring Naughton coal plant on a 1,120-acre site, as reported by POWER Magazine. The U.S. Nuclear Regulatory Commission authorized a Part 50 construction permit on March 4, 2026, which POWER Magazine described as the first commercial reactor the agency has approved for construction in nearly a decade. TerraPower officially started construction on Kemmerer Unit 1 on April 23, 2026, with a 2030–2031 commercial operation target, according to POWER Magazine. The publication put the all-in project cost at roughly $4 billion, split evenly between a U.S. Department of Energy grant through the Advanced Reactor Demonstration Program and private investment.
What We Don’t Know
The announcement is a preview demonstration, and the companies have not published independent verification that the eight-week figure reflects work completed end-to-end on a regulated project rather than an internal modeling exercise. The 18-months-to-eight-weeks comparison appears across TerraPower, Nuclear Engineering International, and Interesting Engineering, but each traces to the same company-provided framing. It is also unclear how the tool interacts with NRC licensing review timelines, which sit outside a developer’s direct control.
Analysis
The pitch reflects a wider bet across the advanced-nuclear sector that design and siting—not just reactor physics—are where schedules slip and costs balloon. By moving conflict detection for exclusion zones and terrain into a 3D environment before construction commitments, TerraPower is targeting the early-stage engineering phase that Loktinov described as expensive to get wrong, according to Interesting Engineering. Whether simulation-driven design compression translates into real schedule and budget gains on Kemmerer Unit 1, which is already in construction with commercial operation targeted for the early 2030s per POWER Magazine, will be the test that matters.