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HOME/WHAT WE DO

HEAT.
ELECTRONS.
DISPATCH.

Three systems, one stack. We make the fusion heat, we convert it into power with a sCO₂ turbine block, and we sell the electrons into nine wholesale markets — within 12 milliseconds of leaving the reactor.

/ 01 — HELIOS−1
01

THE
SMALLEST PRODUCTION
FUSION REACTOR.

A 200 MWₜ spherical tokamak built around our second-generation high-temperature superconducting magnet topology. Designed from day one to be commercial, manufacturable, and licensable.

Form factor
Spherical tokamak (low aspect-ratio, A ≈ 1.6)
Compact relative to ITER-class machines by a factor of 80
Magnets
HTS REBCO, 20 T peak field
Made in-house, Osaka site, 11 modules per reactor
Fuel
Deuterium−tritium
Closed tritium breeding cycle; lithium blanket, self-sufficient
Thermal output
200 MW (sustained)
Capacity factor 92%, scheduled outages included
Footprint
0.4 hectare (reactor island only)
Plus 1.2 ha for turbine, switchyard, control building
Lifecycle
40 year design life, decommissioning priced
Zero long-lived radwaste; tritium recycled, structure recyclable
/ 02 — PULSE
02

THE TURBINE
WITHOUT THE TURBINE HALL.

A closed-loop supercritical CO₂ power conversion island, packaged into something the size of two shipping containers. 52% thermal-to-electric efficiency. Drop-in replacement for a 1970s Rankine steam plant.

Cycle
Closed-loop sCO₂ Brayton
550 °C / 25 MPa loop conditions
Conversion
52% thermal-to-electric
9 percentage points above best-in-class Rankine
Footprint
24 m² (skid-mounted)
Replaces a 4,000 m² 1970s turbine hall
Output
104 MWₑ per module
Pair-matched to one Helios-1 reactor
Cold start
11 minutes to full load
Versus 8+ hours for a comparable Rankine block
/ 03 — GRID−X
03

SOFTWARE
THAT SELLS THE
JOULES.

Real-time dispatch, settlement, and ancillary-services engine. Plugs into nine ISOs, predicts price formation 60 minutes ahead, and contracts every megawatt-hour we make before it leaves the reactor.

PE-GX-03 / DISPATCH WINDOW 04:00-08:00
Latency
12 ms median end-to-end
From sensor tick to cleared order
Markets
9 ISOs / RTOs across 3 continents
ERCOT, MISO, CAISO, NYISO, PJM, NEISO, AESO, EPEX, JEPX
Cleared volume
$117 M (last twelve months)
Pilot trading via partner gas peakers, pre-fusion offtake
Forecasting
Sub-1% MAPE at 60-min horizon
Trained on six years of node-level price formation data
Reliability
99.997% available since launch
Two independent fall-back paths to the ISO API
/ TALK TO US

BUY HEAT.
BUY ELECTRONS.
BUY BOTH.

We have available capacity on Helios-Prime for industrial offtake from Q4 2026, and Helios-1 commercial offtake from Q2 2031. Talk to us about heat, electrons, dispatch, or a turnkey reactor on your site.

Industrial offtake →Sovereign & utility enquiries