
Bengaluru-based climatetech startup CarbonStrong has raised ₹12.5 crore in a funding round led by IAN Angel Fund, with participation from Rainmatter, Social Alpha, Spectrum Impact and Full Circle Ventures.
The company develops low-carbon cement substitutes using industrial waste from sectors such as coal and steel. It plans to use the fresh capital to establish its first production facility and move from customer trials towards commercial-scale manufacturing.
CarbonStrong is targeting production capacity of up to 100,000 tonnes per year over the next two years, as it works to expand the use of lower-carbon materials in concrete.
What Happened?
CarbonStrong has secured ₹12.5 crore in its latest funding round, led by IAN Angel Fund. Rainmatter, Social Alpha, Spectrum Impact and Full Circle Ventures also participated in the round.
The funding will support several areas of the company’s expansion, including setting up its first production facility, hiring additional employees, product development and testing.
A key focus for the startup will be shifting from customer trials to commercial production. The company intends to establish the manufacturing infrastructure required to serve customers at a larger scale.
CarbonStrong plans to build production capacity of up to 100,000 tonnes annually within the next two years.
Key Details
Founded in 2022, CarbonStrong develops low-carbon binders designed to replace a portion of conventional cement used in concrete.
The startup says its products can replace up to 50% of cement in concrete. Its binders are produced by processing industrial waste from coal, steel and other industries into cementitious materials.
The approach allows industrial waste to be converted into construction materials instead of being treated solely as waste. CarbonStrong says its technology can reduce both the carbon footprint and cost of concrete while maintaining performance.
Another focus is ease of adoption. The company says its low-carbon binder can be used without requiring changes to existing concrete plants or production processes.
With the new funding, CarbonStrong will increase product testing and development while expanding its team. The company will also work towards completing its first production facility and increasing manufacturing capacity.
Company Background
CarbonStrong was founded in 2022 by Harsh Jain and Vikramaditya Singh. Jain serves as Co-founder and CEO, while Singh is Co-founder and COO.
The Bengaluru-based startup operates in the climatetech and construction materials space. Its core business is focused on developing alternatives to conventional cement by using industrial waste as an input.
Cement is a major component of concrete, but its production is associated with significant carbon emissions. CarbonStrong’s business model is built around reducing the amount of conventional cement required in concrete while creating a productive use for industrial waste.
The startup is now moving from product development and customer trials towards larger-scale manufacturing.
Why This Matters
The funding comes as the construction industry faces increasing pressure to reduce the environmental impact of building materials.
By replacing a portion of cement with low-carbon binders, CarbonStrong is targeting emissions reduction at the material level. Its use of industrial waste also creates a second environmental benefit by finding productive applications for waste generated by other industries.
The company’s ability to integrate its material into existing concrete plants without requiring major process changes could also make adoption easier for customers.
For CarbonStrong, moving from trials to commercial production will be an important test of whether its technology can achieve cost, performance and scale requirements in the construction market.
Industry Impact
The construction industry is one of the largest users of cement, making lower-carbon alternatives an important area for climate technology companies.
CarbonStrong’s approach connects two industrial challenges: managing waste from sectors such as coal and steel and reducing the carbon intensity of cement-based construction.
If the company successfully reaches its targeted 100,000-tonne annual capacity, it could provide a larger supply of low-carbon cementitious material for commercial customers.
The participation of IAN Angel Fund, Rainmatter, Social Alpha, Spectrum Impact and Full Circle Ventures also reflects growing investor interest in technologies that combine industrial applications with climate and sustainability goals.
Future Plans
CarbonStrong will use the ₹12.5 crore funding to establish its first production facility, expand its team and continue product development and testing.
The immediate objective is to move beyond customer trials and begin commercial-scale production. Over the next two years, the startup aims to build production capacity of up to 100,000 tonnes a year.
The company’s expansion will depend on its ability to scale manufacturing while maintaining the performance and cost advantages of its low-carbon binders.
Conclusion
CarbonStrong’s ₹12.5 crore funding round gives the Bengaluru climatetech startup capital to move its low-carbon cement technology closer to commercial production.
With backing from IAN Angel Fund, Rainmatter and other investors, the company plans to build its first production facility, expand its team and target 100,000 tonnes of annual capacity within two years.
Its next phase will be focused on turning customer trials into commercial-scale deployment while using industrial waste to develop lower-carbon construction materials.

