Large industrial turbines native to the AI factory, delivered in months not years. Engineered for American manufacturing with the speed and scale the grid needs.
Output
50 MW per unit, natural gas
Standard block
250 MW (5 × 50 MW)
Lead time
12 months from deposit
NOx
2.5 ppm, dry, no SCR
Electrical
800 VDC, or 60 Hz AC
Pairs with
batteries and solar on the same bus
Asset life
20+ years with annual maintenance
Fuel
pipeline natural gas
We are not reinventing the turbine. We are bringing a new optimization function to a mature technology.
The industry spent decades optimizing for one thing: the last point of peak efficiency. We optimize for what the grid needs over the next two decades: firm power, delivered fast, built in volume, at a cost that makes energy abundant.
We believe the future of energy abundance is defined by America's ability to design, fabricate and deploy new turbines. Energy abundance has never really been a technical problem. We have known how to do it for decades: nuclear, natural gas, solar and batteries. It has always come down to will, cost and manufacturing. The will is here. Stone solves cost and manufacturing at scale.
We design with our own software. Every test, build, and field hour feeds the next design. That is how a lean team of turbine engineers moves this fast. It is also why the next dozen turbines come faster than the first.
We reserve vertical integration for where it moves the needle and optimize relentlessly for simplicity. The goal is gigawatts at scale, not the perfect machine. The best part is no part.
The grid of the next two decades is firm generation plus storage. Data centers are moving to 800 VDC with batteries on the same bus. New plants of every kind are being paired with storage. That changes what a turbine should be good at: ramp rate and start time. The things the incumbents spent decades chasing matter less when a battery sits on the bus, so we designed a hybrid turbine from day one. The battery takes the load swings and the fast starts. The turbine runs steady at the point it was designed for. There are fewer conversion steps between the generator and the rack.
Natural gas first. Nuclear and geothermal next.
The next dozen turbines arrive in an order, not all at once. Natural gas comes first because the cycle is proven, the demand is immediate, and the manufacturing floor only gets built right when it's engineered around a real, shippable product. Steam turbines for advanced reactors, organic Rankine for geothermal, and supercritical CO2 follow, with propulsion behind them.
We don't have to bet on any single advanced cycle to win, because roughly 80% of the factory steps carry over no matter the heat source. A turbine is a turbine is a turbine: designed by the same team, on the same software stack, built on the same lines. The design engine and the factory are what we're really building, and they compound with every cycle we add. Each new technology is a new line, not a new company. That is how Stone goes from clean sheet to delivered turbine, on repeat, and serves whatever the grid needs next.
[Caption example: Schematic of a natural gas turbine. Label items 1-5 in schematic.]
A first-of-a-kind machine earns trust in fire hours, not in a brochure. We structure early units around the energy they deliver while the hours build. Our engineers work on site with your EPC. Customers join our design reviews and factory tours.
A small group of the few hundred heavy-duty turbomachinery engineers on earth, paired with build talent that has shipped on the most demanding hardware programs of the last decade. Decades each in industrial gas turbines, combustion, aerodynamics, and rotating machinery.
Building the next generation of generation. Power up with Stone.