Powering Humanity from
a Mile Underground
At Deep Fission, we’re pioneering a bold new approach to delivering carbon-free, reliable, and affordable electricity by placing our scalable 15 MWe small modular reactors (SMRs) one mile underground.
Clean Energy for the AI Era: Redefining the time and cost of nuclear power deployment.
Traditional and next-gen reactors alike haven’t fully solved the core challenges of cost, speed, and scalability. At Deep Fission, we’re changing that.
We’ve developed a radically simple solution: take the world’s most trusted reactor design and move it one mile underground. At this depth, our Gravity Reactors leverage Earth’s natural forces to make nuclear power inherently safer, dramatically more cost-efficient, and faster to deploy.
This approach eliminates up to 80% of surface construction costs, slashes timelines, and allows deployment in a fraction of the footprint—almost anywhere it’s needed.
Our reactors are modular and scalable, from 15 MWe to over 1.5 GWe, enabling flexible deployment across industrial sites, data centers, remote grids, and growing commercial hubs.
By combining three proven technologies– pressurized water reactor (PWR) fueled with standard LEU, geothermal, and deep borehole drilling–we anticipate a faster, safer path to regulatory approval, without reinventing the core science or sacrificing reliability.
Each Deep Fission small modular reactor produces 15 MWe, and the fully modular design scales up to 1.5 GWe. Take a look at our Gravity Reactor.
Connect with us
Inquire with us about getting involved in a first-of-its-kind deep underground reactor.