Solid Oxide Electrolyser Cell

Solid Oxide Electrolyser Cell (SOEC) Technology

A next-generation electrolyser technology, enabling highly efficient, cost-competitive green hydrogen production, while supporting scalability

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Thermax is pioneering solid oxide electrolyser cell (SOEC), a next-generation solution for green hydrogen production that is efficient, cost-competitive, and scalable. In collaboration with Ceres, our technology partner, we are bringing this world-class innovation to India and beyond.

At the heart of SOEC are stack array modules (SAMs), supported by a balance of modules (SBMs) engineered by Thermax to deliver reliable and seamless operations. Building on this momentum, Thermax is setting up a 720 kW pilot plant at its own facility. Ceres provides cell and stack technology, while Thermax undertakes complete engineering, localisation, assembly, testing, and services of multi-megawatt modules. By localising design, engineering, and manufacturing in India, Thermax ensures that this breakthrough technology is accessible to industries pursuing a sustainable future.

Technical data

Thermax, in partnership with Ceres Power, offers advanced Solid Oxide Electrolyser Cell (SOEC) technology for high-efficiency green hydrogen generation. Ceres provides cell and stack technology, while Thermax undertakes complete engineering, localisation, assembly, testing, and services of multi-megawatt modules.

Technology type

Solid Oxide Electrolyser Cell (SOEC)

Operating temperature

Low operating temperature (500–600°C) provides better mechanical stability

Module capacity range

Flexible modular design, scalable to multi-megawatt (MW) output

Feedstock

Low grade steam and electricity (from renewables)

Efficiency

> 25% compared to other technologies

Module capacity

<720 kW (which acts as a building block for developing MW scale scale electrolyser systems) 

Product features

Superior energy efficiency
Consumes 25–30% less electricity than conventional technologies
Lowest Cost
Delivers the lowest levelised cost of hydrogen (LCOH) and ammonia (LCOA)
No Noble Metals
No reliance on platinum group metals, reducing capex and supply chain risk
Integration with Industrial Processes
Ideal for refining, steel, ammonia, and chemical sectors where waste heat is available
Modular and scalable
Flexible deployment from pilot projects to gigawatt-scale systems.
Make in India, for the World
Indigenised manufacturing bringing globally competitive technology with innovation and cost advantage
Proven Technology & System
Backed by successful global pilots and industrial-scale demonstrations, ensuring reliability and bankability