Green energy startup Ossus Biorenewables raises $2.4M in pre-Series A


Bengaluru-based green energy startup Ossus Biorenewables has raised $2.4 million in a pre-Series A round from Gruhas and Rainmatter Climate.

The funds will be used to accelerate the deployment of Ossus’s OB HydraCel across other sectors, including refining, foods, brewing, chemicals, and pharmaceutical industries, and produce 3-5 tons of green hydrogen each day before the end of the year.

Suruchi Rao, co-founder and CEO Ossus Biorenewables, said, “With the fresh infusion of funds, we will be poised to exponentially scale up the manufacturing of the HydraCel bioreactors, build enhanced bio-capability with state-of-the-art instrumentation, and most importantly, expand across South Asia, Europe, and the US.”

Founded in 2017 by Rao, Shanta Rao, and Kamar Suhail Basha, Ossus is disrupting the green hydrogen space by using waste carbon in industrial effluents as the starting material for green hydrogen.

The startup has developed an AI-powered, intelligent bioreactor, the OB HydraCel, which accesses carbon from wastewater from process industries and supplies them with on-demand, on-site green hydrogen gas.

Ossus’s core IP finds roots in using microorganisms sourced directly from effluents as catalysts for green hydrogen production.

Nikhil Kamath, Co-Founder Zerodha, Gruhas, and True Beacon said, “As the world moves towards more sustainable and environmentally friendly energy sources, Ossus Biorenewables is at the forefront of providing clean, green energy solutions. We are optimistic about India’s green energy future and look forward to supporting Suruchi and the en

With India’s ambitions to become a global green hydrogen hub, its G20 presidency, and an outlay of Rs 19,700 crores announced as part of the National Green Hydrogen Mission, the time is ripe for the country’s transition to a low carbon intensity economy with green hydrogen as a fossil fuel replacement.

Ossus’s innovative efforts align with India’s call to indigenously produce 5MMT (million metric tonnes) of green hydrogen each year without importing foreign-made electrolysers before 2025. The company currently deploys its signature product to Jharkhand for one of India’s largest steel manufacturers.


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