A components company for the alkaline hydrogen economy
Greenprastha makes the components that decide how alkaline electrolysers perform, starting with the separator. This page sets out the public picture. Detailed materials are shared with qualified investors under NDA.
Why Greenprastha
Alkaline electrolysis is the workhorse of green hydrogen. Its performance depends on a few components that India still imports. We make them better, and we make them here.
A market being built now
India has moved from targets to awarded capacity, and alkaline electrolysers account for most of the world's installed base.
A critical, imported component
The separator sets the cell voltage and the gas purity of every alkaline cell. India's stack makers largely import it today.
A measurably better product
Nerva H2Sep 500 delivers more current at the same voltage and a much stronger sheet than a commercial reference, in a drop-in format.
Demand that repeats
Separators are replaced when stacks are rebuilt, so every installed megawatt becomes a recurring need through the life of the plant.
A platform, not a single product
One materials science and one quality system extend from separators to electrodes, zero-gap assemblies, replacement programmes and testing.
Deep science, industrial discipline
Developed at IIT Bombay, incubated at SINE, with lot-level quality records and traceability from the first roll.
* Measured at IIT Bombay against a commercial 500 µm-class reference. Typical values, not a specification.
Green hydrogen is moving from targets to orders
Sources: National Green Hydrogen Mission (MNRE); Business Standard / MNRE (24 Sep 2026); IEA Global Hydrogen Review 2025; BNEF via Hydrogen Insight (alkaline share); Greenprastha estimate at 0.4 A/cm², ~1.9 V (separator area). More on the market
Electrolyser makers want components that perform better and come from more than one country. That is the gap Greenprastha fills.
Where value comes from across the alkaline cell
Each line is built on the same materials science, the same quality system and the same customers.
Components for new stacks
Separators now; electrodes and zero-gap assemblies as they are proven with stack makers.
Learn moreReplacement programmes
Separators and assemblies scheduled through the life of each plant.
Learn moreTesting & qualification
Cell and short-stack testing at the customer's operating conditions.
Learn moreJoint development
New grades and assemblies developed with the stack makers who will use them.
Learn moreTalk to the founders
Tell us about your fund or organisation and what you would like to discuss. We share our investor presentation and supporting data with qualified investors under NDA.
See the product behind the case.
Performance data, the datasheet on request, and how stack makers qualify Nerva H2Sep 500.