Carborundum Universal Invests in Cleantech Solar 18 MW Project
⚡ Quick Read
- What happened: Carborundum Universal (CUMI) signed a PPA with Cleantech Solar’s SPV, Putrim Renewables, for an 18 MW solar project in Thoothukudi, Tamil Nadu, while acquiring a 29.58% equity stake for ₹64.8 million.
- Why it matters: This move highlights the growing trend of C&I enterprises taking equity positions in captive solar projects to secure long-term green power and reduce operational costs.
- Watch: Further progress on CUMI’s goal to achieve a 50% renewable energy mix by 2030 and the completion of the equity acquisition within the 60-day window.
Background and Context
Carborundum Universal (CUMI), a prominent material sciences engineering solutions provider, is accelerating its transition toward sustainable manufacturing. As part of its broader corporate strategy to decarbonize operations, the company has actively sought to integrate renewable energy into its power mix. This latest initiative involves a strategic partnership with Cleantech Solar to source power from a captive solar installation, aligning with the company’s ambitious target of sourcing 50% of its total energy requirements from renewable sources by 2030.
Key Details
The agreement involves a power purchase agreement (PPA) with Putrim Renewables, a special purpose vehicle (SPV) established by Cleantech Solar. The project, an 18 MW solar facility located in Thoothukudi, Tamil Nadu, will supply clean power to CUMI’s manufacturing units in the state. Beyond the PPA, CUMI has committed to a share subscription and shareholders’ agreement (SSSHA) to acquire a 29.58% equity stake in the SPV. This investment is valued at approximately ₹64.8 million (~$694,875.02) and is expected to reach financial closure within 60 days. This follows a similar investment in 2024, where CUMI invested ₹80 million for a 4.19% stake in Grian Energy to access 10 MW of captive solar capacity.
What This Means for EPCs and Developers
For EPC contractors and renewable energy developers, the CUMI-Cleantech deal underscores the shifting landscape of the Commercial and Industrial (C&I) sector in India. Large industrial consumers are increasingly moving beyond simple PPA models to equity-based partnerships. This provides developers with stable, long-term capital and guaranteed offtake, while industrial players gain greater control over their energy costs and carbon footprint. Developers should note that companies like CUMI are prioritizing projects that offer both grid stability and regulatory compliance, making them attractive partners for mid-scale solar developments.
What Happens Next
The successful execution of this 18 MW project will serve as a benchmark for CUMI’s future energy procurement strategies. With the company already operating a 12 MW hydroelectric plant in Kerala and expanding its rooftop and ground-mounted solar portfolio, the focus remains on scaling these assets. As the India renewable energy sector continues to mature, the integration of captive solar projects by major industrial players is expected to drive significant demand for high-quality EPC services and innovative financing structures, further cementing the role of C&I consumers in India’s net-zero transition.

