Abundant
Fuel from seawater and sunlight on every acre: enough energy to double supply without rationing it.
Helionovus — Building anew sun forthe whole planet
Helionovus designs and builds compact fusion power plants, perovskite-silicon solar, multi-day storage and grid sensing — engineered to work as one system.
Scroll for moreHelionovus is an energy company building the machines of a new sun : fusion power plants , tandem solar , multi-day storage and a grid that knows its own limits.
Every joule began as fusion
The opportunity ahead
The world will use almost twice as much electricity by 2050: data centres, electric vehicles, heat pumps and industry, all at once.
Global electricity demand is projected to grow from about 27,000 terawatt-hours in 2024 to about 51,000 by 2050. Meeting it takes energy that is abundant, firm and clean.
Abundant, firm, clean power
is how we meet it.
Firm
Every hour of every season: fusion baseload, with 100-hour storage for the weeks the sun and wind fade.
Clean
No combustion and no long-lived high-level waste: helium from fusion, iron and water from storage.
Four machines · one system
Make it. Harvest it.
Hold it. Move it.
NOVA · Compact fusion
A star, held
by magnets.
A D-shaped ring of fire
Deuterium–tritium plasma at 150 million °C circulates around the torus, never touching the wall.
- Core
- 150M °C
- Elongation
- 1.9
Eighteen HTS coils
REBCO superconducting tape reaches 20 tesla at the coil. Fusion power density scales with B⁴, so the machine shrinks dramatically.
- At coil
- 20T
- On axis
- 12T
A twist in the field
The central solenoid drives 8.5 million amps through the plasma, twisting field lines into helices that hold it in place.
- Plasma current
- 8.5MA
- q₉₅
- 3.4
Salt that makes its own fuel
A FLiBe molten-salt blanket stops the neutrons, carries their heat to the turbines, and breeds tritium from lithium.
- Breeding ratio
- >1.1
- Outlet
- 600°C
The exhaust of a star
Field lines are diverted onto tungsten targets that handle heat fluxes above 10 MW/m² — more than a rocket nozzle.
- Heat flux
- >10MW/m²
- Armour
- W
NOVA-1 design model · real-time render
By the numbers
Physics, not promises.
Every figure below is a measured result or a published physical limit. Our own targets are labelled as targets.
150M °C
Core temperature a tokamak plasma needs — ten times the core of the Sun.
Plasma physics20T
Field at the coil from REBCO high-temperature superconducting magnets.
Demonstrated, 202135.5%
Record efficiency for a perovskite-silicon tandem cell, beyond silicon's 33.7% limit.
Certified lab record, 2026100h
Discharge duration of iron-air storage — long enough to carry a grid through a windless week.
UMBRA-L designOur technologies in detail
LUMEN · Solar
Two cells, one module, more of the spectrum.
A 1.68 eV perovskite cell on a silicon heterojunction splits sunlight at 740 nm — blue light converted on top, red and infrared below.
Research cell
Printed at low temperature.
Perovskites are crystals printed from solution, thin enough to sit on a silicon wafer without replacing it.
UMBRA-L · Iron-air
Storage that breathes.
Discharging, iron pellets take in oxygen and rust. Charging reverses it — slow, cheap and made of iron, water and air.
HALO · Grid
The fastest new power line is the one you already have.
Line-mounted sensors measure conductor temperature, sag and wind to compute real capacity — typically 10–40% above static ratings.
UMBRA · Storage
Power for the days without sun.
A week on a solar-powered grid, with three overcast days in the middle. Switch storage on and watch the gaps close.
Demand served—
Hours short—
Solar curtailed—
Solar to loadSodium-ion · 4 hIron-air · 100 hUnservedDemand
Illustrative hourly model: 1 GW average demand; 6.5 GWp solar; days 3–5 overcast at 15–25% of clear-sky output. Sodium-ion 1.5 GW / 6 GWh at 90% round-trip; iron-air 1.5 GW / 120 GWh at 45%, entering the week 85% charged.
Heliostat · Software
One view of every electron.
A live digital twin of every site: weather-driven forecasts, dispatch that respects the grid's real limits, and a copilot that explains what changed.
Open HeliostatOur approach
Research
We start from what physics allows — detailed-balance limits, plasma scaling laws, electrochemical potentials — and work back to what can be manufactured.
Prove
Every claim is tested on real hardware at meaningful scale: magnet coils at full field, modules on outdoor racks, storage on live feeders.
Deploy
Bankable warranties, open data interfaces and designs certified to the standards utilities and regulators already use.
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Build the next sun with us.
Utilities, data-centre developers, industrial off-takers, investors and engineers — tell us what you're working on.