THREE-PHASE AC PLASMA · MADE IN FRANCE
Plasma heat and clean hydrogen, without the CO₂.
Plasma torches above 3,000°C and HyPlasma® units that turn (bio)methane into hydrogen and solid carbon — in continuous industrial operation.
3,000°C+
Arc temperature
also pressurised, up to 6 barg
>90%
Thermal efficiency
measured on our three-phase torches
0 kg CO₂
Direct emissions
(bio)methane pyrolysis, no combustion
2018
Founded
based in Sophia-Antipolis
WHO WE ARE
We built the first commercial three-phase AC plasma torch. Then we built the plant around it.
Plenesys is a multi-award-winning French deep-tech company founded in 2018. Our team designs plasma torches for clean high-temperature heat, and turnkey HyPlasma units that produce hydrogen and carbon black from (bio)methane.
Since 2018
A continuously growing French deep-tech company developing industrial plasma technologies for the energy transition.
Research & development
Three-phase plasma designed for continuous, industrial-scale operation. R&D is the core of the company.
Technological firsts
- First commercial three-phase AC plasma torch
- Designed for high-pressure operation
- Continuous arc for industrial processes
OUR PRODUCTS
Two patented products. One plasma core.
Plasma Torch
Clean power for industry: electric high-temperature heat that integrates into existing furnaces and reactors.
- Temperatures above 3,000°C
- Thermal efficiency above 90%
- Continuous operation, also pressurised
HyPlasma® Tech
Clean production of hydrogen and carbon black: modular turnkey units fed with (bio)methane, with no direct CO₂.
- 100 kW containerised unit · 2 MW plant
- Natural gas, biogas or flare gas, 1–6 barg
- Up to 3× less electricity than electrolysis
How it works
CH₄ → 2H₂ + C. No combustion, so no CO₂.
The plasma arc splits methane directly into hydrogen and solid carbon. Unlike steam reforming, nothing is burned or oxidised.
1
(Bio)methane in — natural gas, biogas or flare gas, 1–6 barg.
2
Three-phase plasma arc — above 3,000°C; the arc’s motion mixes the gas, no oxygen involved.
3
Hydrogen and solid carbon out — two valuable products, zero direct CO₂.
1
(Bio)methane in — natural gas, biogas or flare gas, 1–6 barg.
2
Three-phase plasma arc — above 3,000 °C; the arc’s motion mixes the gas, no oxygen involved.
3
Hydrogen and solid carbon out — two valuable products, zero direct CO₂.
SECTORS
Where 3,000°C of electric heat pays off.
We meet the needs of the most demanding industries with tailor-made solutions.
Hydrogen production
Low-carbon H₂ on site, from the gas you already have.
Carbon production
Solid carbon as a product, not an emission.
Heavy industries
Electric high-temperature heat for steelmaking and furnaces.
Waste treatment
Plasma temperatures for hazardous and complex streams.
SERVICES
From a gas sample to a running plant.
From feasibility testing and process engineering to commissioning and long-term technical support, one team follows your project from concept to operation.
1
Pre-FEED engineering
Integration study and first cost estimate for your site and feedstock.
2
Pilot testing
Your own gas on the 100 kW pilot: measured yields and carbon grades.
3
Commissioning & maintenance
Installation, start-up, training and long-term support.
Supported by
