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Engineered in-house
Every system, from the plasma core to the power electronics, is designed and built by our own team — a reactor developed from first principles, not adapted from someone else's blueprint.
Fusion energy · Clean baseload power
On a mission to build fusion reactors that will power the future.
Iongard builds fusion reactors from the ground up — compact, passively safe, and grid-ready. Carbon-free power you can deploy where it's needed, in years instead of decades.
300 MWe
Net electrical output<24 mo
Site to grid60 yr
Design life0 CO₂
Operating emissionsDesign targets — early-stage concept
What we're building
Fusion power, built from the ground up.
Most reactors are one-off megaprojects, assembled on site over a decade. We engineer ours from the ground up — our own reactor, our own physics — designed to be built fast and deployed where the power is needed.
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Walk-away safe
No chain reaction to run away, no meltdown to design against. Lose confinement and the plasma simply stops — safe by physics, with no external power or human intervention.
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Grid-ready & flexible
300 MWe sited right next to demand — data centers, heavy industry, remote and island grids. Compact, clean, and dispatchable, with no large exclusion zone.
Join the mission
Help build the future of energy.
We're just getting started. We're not hiring yet, but we're always glad to meet exceptional plasma physicists, engineers, and operators — and to partner with utilities, industry, and government to bring the first reactors online.
Technology
How our fusion works
Iongard's reactor doesn't boil water. We accelerate rings of fuel plasma to extraordinary speed, collide them head-on, compress the result with intense magnetic fields, and draw the energy back out as electricity directly. Here's how each stage works.
The fuel cycle
Limitless fuel from the sea. Nothing left behind.
Our fuel begins as ordinary seawater and ends as harmless helium — abundant to source, and clean from the first atom to the last.
Stage 01 · Source
Deuterium, harvested from seawater
Deuterium (²H) is a heavy, stable form of hydrogen present in every drop of water. We separate it straight from the sea — no mining, no drilling.
1 in 6,400
hydrogen atoms in seawater is deuterium — about 33 g per cubic metre. The oceans hold enough to power civilisation for billions of years.
Stage 02 · Breed
Helium-3, bred by fusion
Helium-3 (³He) is rare on Earth — so we make it. Fuse two deuterium nuclei and one path yields a helium-3 nucleus and a neutron. The fuel breeds its own partner.
²H + ²H → ³He + n
Stage 03 · Fuse
Fused into helium — and that's all
Deuterium and helium-3 merge into an ordinary helium nucleus and a fast proton we capture directly as electricity. The exhaust is helium: inert, harmless, non-radioactive.
²H + ³He → ⁴He + p
No nuclear waste
The reaction's only exhaust is ordinary helium — the same gas in a party balloon. No long-lived radioactive byproducts, no spent fuel to store for millennia.
Net-zero carbon
Nothing is burned, so nothing is emitted. Zero CO₂ at the point of generation — clean, firm power around the clock.
Nuclear-scale view — deuterium + helium-3 colliding, then fusing into helium.
Inside the collision
The reaction, up close
Our fuel is deuterium and helium-3. At fusion conditions these light nuclei merge into helium and eject a fast proton — an aneutronic reaction that releases its energy as charged particles, which is exactly what makes direct electrical capture possible.
- Reactor typeField-reversed · pulsed
- Peak temperature> 100M °C
- Energy captureDirect (no steam)
- FuelDeuterium + helium-3
- Electrical output300 MWe
- Site footprint< 1 hectare
Specifications describe the design concept and are subject to change.
Iongard AI
The plasma, held steady by AI.
Fusion plasma is fast and unforgiving — a useful pulse lasts milliseconds, and the smallest wobble can quench it. Iongard AI watches the plasma thousands of times a second, catches an instability as it forms, and retunes the magnetic field in real time — holding the reaction steady and pulling more energy from every shot.
01 — Sense
Hundreds of sensors stream the plasma’s shape, temperature, and field strength at kilohertz rates.
02 — Predict
A learned model recognises the onset of an instability milliseconds before it would break the pulse.
03 — Correct
Control loop ~10 kHz · response <1 ms · design-concept targets
The controller retunes the magnets on the fly — damping the wobble and steering the plasma toward peak output.
Newsroom
News & press
Milestones and announcements from the team building fusion reactors from the ground up. Sample content shown for a design concept.
May 2026
First sustained plasma achieved in confinement test rig
Our compact prototype held a stable deuterium plasma through a full operating cycle, validating the magnet geometry ahead of the integrated reactor build.
2026
Iongard gets started — building fusion from first principles
A small team sets out to design and build its own fusion reactor, physics up. We haven't opened an investment round yet.
Feb 2026
Partnership with a regional utility on grid integration
A multi-year agreement to study siting compact fusion next to existing demand — from data centers to industrial heat.
Jan 2026
Direct energy conversion testbed comes online
An experiment aimed at capturing charged-particle energy without a thermal cycle — a core advantage of aneutronic fusion.
Nov 2025
Building the founding team
We're just getting started and aren't hiring yet. If you want to help build clean firm power from the ground up, introduce yourself and we'll be in touch.
Investor relations
Backing the build
Iongard is at the very beginning — building fusion reactors from first principles. We have not opened an investment round yet.
Not currently raising
We're just getting started, so there's no open round today. Register your interest below and we'll reach out when our first round opens.
The thesis
Clean, firm, dispatchable power is the missing piece of a decarbonized grid. Fusion can deliver it without the fuel-cycle and meltdown constraints of fission.
Rather than assemble licensed designs, we're building the whole reactor in-house — confinement, fueling, and energy capture — so the economics and the roadmap are ours to control.
Right now that means the earliest, hardest work: our own physics, a first prototype, and the path to first plasma.
- StagePre-seed · just starting
- Investment roundNot open yet
- Current focusPrototype & first plasma
- ApproachAneutronic D-³He
This page is a design concept and is not an offer to sell, or a solicitation to buy, any security.
Register interest
We're not raising — yet.
When we open our first round, we'll want the right partners alongside us. Tell us you're interested and we'll be in touch.
Our people
The team
Physicists, engineers, and operators building a fusion reactor from the ground up. Placeholder profiles shown for a design concept.
BP
Bao Pham
Founder & CEO
Founder of Iongard, on a mission to build the fusion reactors that will power the future.
JM
Dr. Julian Mercer
Chief Plasma Physicist
Two decades in magnetic confinement and plasma stability across national-lab programs.
SK
Sofia Khan
VP, Magnet Engineering
Leads high-field magnet design and the cryogenic systems that hold the plasma in place.
DO
David Okafor
VP, Reactor Systems
Owns integration of the core, fueling, and energy-capture subsystems into one machine.
EV
Dr. Elena Vasquez
Head of Controls
Builds the real-time control and diagnostics that keep the reactor safe by physics.
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Marcus Tan
VP, Operations
Scales manufacturing and deployment so reactors can be built fast and sited near demand.
Join us
Build the hard part.
We're not hiring yet — but we're always glad to meet people who want to work on plasma physics, magnets, controls, and operations.
Careers
Help build the future of energy
We're just getting started and aren't hiring right now. When we open roles, they'll be posted here — and if you want to help build clean firm power from first principles, we'd still love to hear from you.
Why Iongard
We build our own reactor from first principles — so the work here is genuinely hard, genuinely new, and genuinely consequential.
Small teams, real ownership, and a clear mission: clean firm power on the grid. If you want to work on a defining engineering problem of the century, this is the place.
Not currently hiring
We don't have any open roles right now — we're just getting started. As the team grows, every opening will be listed here. Until then, introduce yourself and we'll reach out when the right role opens.
Stay in touch
No openings — yet.
We're always glad to meet exceptional plasma physicists, engineers, and operators. Tell us about yourself and we'll be in touch when we start hiring.
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Quarterly results
We haven't begun quarterly reporting yet — Iongard is just getting started. When we do, results and webcasts will live here.
No results published yet
Iongard is at its earliest stage and hasn't opened an investment round or begun financial reporting. Once we do, each quarter's results, materials, and webcast will be published on this page.
What we'll report
What each quarter will cover
When reporting begins, here's the shape of what you can expect — clearly, and on a regular cadence.
PROGRAM
Technical progress
Where we are against the roadmap — prototype work, magnet development, and the path toward first plasma.
FINANCIALS
The numbers
How we're funded and how we're spending it — cash position, burn, and runway, in plain terms.
OUTLOOK
What's next
The milestones we're aiming for next, and how to judge whether we hit them.
Stay informed
Be first to see our results.
We'll start publishing once there's something to report. Register your interest and we'll let you know.
← Investor relations
Annual report
We're just getting started — our first annual report hasn't been published yet. Here's what it'll be, and where to find it.
First edition · Coming soon
Our first annual report is on its way.
Iongard is just getting started. After our first full year of building, we'll publish a complete account of the mission, the science, and the numbers — right here.
We haven't opened an investment round or begun formal reporting yet, so there's nothing to download today.
Annual Report
Coming
soon
soon
Iongard · First edition
From the founder
Where we are today
We're at the very beginning. Iongard exists to build fusion reactors from first principles — and right now that means a small team, a clear plan, and the hard early work of turning physics into hardware.
We haven't opened an investment round, and we haven't begun formal reporting. When we do, this is where you'll find our annual account — written plainly, for the people who choose to back the build.
If that might be you, we'd love to hear from you early.
— Bao PhamFounder & CEO
Investor inquiries
Want to follow along?
We're just getting started. Reach out and we'll keep you posted as the work — and the first report — takes shape.