NHPC Declares Commercial Operations of Unit 2 at Subansiri Lower Hydroelectric Project

NHPC Limited has announced the commencement of commercial operations for Unit 2 of the Subansiri Lower Hydroelectric Project. 

The 250 MW unit began commercial operations at midnight on December 23, 2025, following the successful completion of its trial run. This marks another significant milestone in the commissioning of the 2,000 MW project.

Project Location and Investment Details

The Subansiri Lower Hydroelectric Project is located at Gerukamukh on the border of Arunachal Pradesh and Assam. With an estimated project cost of around ₹27,000 crore, it is one of India’s most ambitious hydropower developments. The project is designed as a run-of-the-river scheme, aimed at maximising power generation while minimising environmental impact.

NHPC confirmed that the declaration of the Commercial Operation Date (COD) for Unit 2 has been made in compliance with Regulation 30 of the SEBI (Listing Obligations and Disclosure Requirements) Regulations, 2015. 

The announcement follows a series of earlier disclosures made by the company since October 2023, keeping stakeholders informed about the project’s progress.

Progress Toward Full Capacity

The Subansiri Lower HE Project comprises eight units of 250 MW each, totaling 2,000 MW. With Unit 2 now operational, NHPC has reiterated that the commercial operation dates of the remaining units will be announced in due course. 

The phased commissioning approach reflects the company’s focus on operational readiness and safety.

Power Generation Potential

Once fully operational, the Subansiri Lower Hydroelectric Project is expected to become India’s largest hydroelectric station. At 90% dependability, the project is projected to generate approximately 7,421.59 million units of electricity annually. 

This output is expected to play a vital role in strengthening grid stability and supporting clean energy goals.

NHPC Share Price Performance

On December 22, 2025, NHPC share price opened at ₹76.61, touching the day’s low at ₹77.87, as of 12:12 PM on the NSE.

Also Read: Government Schemes Launched in 2025!

Conclusion

The commissioning of Unit 2 at the Subansiri Lower Hydroelectric Project underscores NHPC’s steady progress in delivering large-scale renewable energy infrastructure. As additional units come online, the project is set to significantly enhance India’s hydropower capacity and contribute to long-term energy security and sustainability.

Disclaimer: This blog has been written exclusively for educational purposes. The securities mentioned are only examples and not recommendations. This does not constitute a private recommendation/investment advice. It does not aim to influence any individual or entity to make investment decisions. Recipients should conduct their own research and assessments to form an independent opinion about investment decisions.

Investments in the securities market are subject to market risks, read all the related documents carefully before investing.