Steel plants, refineries and fertiliser factories all run on hydrogen — and almost all of it comes from fossil fuels. If India wants its hardest-to-decarbonise industries to go green, it needs electrolysers that split water into hydrogen using clean electricity, and it needs them made at home. That is exactly the machine Greenzo Energy builds.
In October 2024, at the Sanand Global Expo, the company unveiled its 1 MW alkaline electrolyser stack, the “Un Wheel” — a fully indigenous design, launched in the presence of Gujarat’s Industries Minister. The company says the stack was engineered by Indian scientists for Indian conditions: it runs from −20°C to 60°C, delivers hydrogen at 30 bar (so no extra compressor is needed), uses non-noble metals and a proprietary electrolyte composition with waste-heat recovery, and is built for up to 80,000 operating hours. The company’s own USP list puts 95% locally sourced materials and 100% Indian technology right at the top.
Greenzo runs a 250 MW-per-annum electrolyser manufacturing facility at Sanand GIDC in Ahmedabad, Gujarat, where it builds alkaline water electrolysers from 150 kW to 5 MW along with integrated Balance of Plant systems. Beyond manufacturing, the company executes complete green hydrogen projects — engineering, procurement and construction, plus operations and maintenance — a single-stack approach that runs from hardware to hydrogen.
The hardware is already out in the field. Greenzo dispatched a 1 MW alkaline electrolyser system to Oswal Energies, secured a 3 MW electrolyser supply contract from Jindal Stainless for Odisha, won an electrolyser R&D order from Engineers India Limited through the GeM platform, and is setting up a 20 Nm³/hr hydrogen plant at TANGEDCO’s 2×660 MW Ennore thermal station — a project the company said took its order book to Rs 1,200 crore. Its own site also lists a 30 Nm³/hr system supplied to Felix Industries and a 5 MW green hydrogen plant at Deendayal Port.
This month the company closed a Rs 130-crore funding round led by veteran investor Ashish Kacholia and his associates, valuing the platform at about Rs 1,030 crore post-money. Cumulative capital across three rounds now stands at roughly Rs 251 crore, with Alchemy Longterm Venture Fund, Lashit Sanghvi, Siddharth Sunder and Nova Global Opportunity Fund also participating. The company says the money goes into expanding indigenous electrolyser capacity, deeper backward integration, research and development, and project execution in India and abroad.
Greenzo Energy India Limited was founded by Sandeep Agarwal, an IIT Roorkee-trained mechanical engineer with two decades in renewable energy and power machinery. The company’s rise tracks the National Green Hydrogen Mission’s ambition — to make India a global hub for green hydrogen production and use.
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Electrolysers are the unglamorous heart of the hydrogen economy. With indigenous stacks, a running factory and megawatt-scale orders from industry, Greenzo is building the muscle India needs to make its own green hydrogen — and to sell the machines, too.
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