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Subansiri Lower Hydropower Project Unit-2 Operational

Economy

Subansiri Lower Hydropower Project Unit-2 Operational

Utkarsh Classes

Updated: 25 Dec 2025

3 Min Read

Subansiri Lower Hydropower Project Unit-2 Operational

On 23 December, 2025, through virtual mode, the commercial operation of Unit-2 (250 MW) of the run-of-the-river Subansiri Lower Hydroelectric Project located in Arunachal Pradesh was inaugurated.

Union Minister for Power, Housing and Urban Affairs Shri Manohar Lal on 23 December, 2025, through virtual mode, inaugurated the commercial operation of Unit-2 (250 MW) of the 2000 MW (8×250 MW) Subansiri Lower Hydroelectric Project.
As India’s largest hydropower project, the Subansiri Lower Project includes eight units of 250 MW each and is designed as a run-of-the-river scheme with a small pondage, which diverts water through eight head race tunnels (HRTs) to generate 7,422 million units (MU) of renewable power annually, making a significant contribution to India’s green energy future.
In addition to supplying power to 16 beneficiary states across India, the Subansiri Lower H.E. project will provide free power to Arunachal Pradesh and Assam, while the North-East region will receive 1,000 MW of electricity from the project, significantly strengthening regional energy availability.
This project includes the largest dam in North-East India, a 116-metre-high concrete gravity dam, which not only strengthens regional infrastructure and grid stability, but also enhances flood control and water management in the Subansiri river basin.

Subansiri Lower Project

It is located at Gerukamukh on the Arunachal Pradesh–Assam border. On completion, it will be India’s largest hydroelectric plant.
This project is being developed by the government-owned National Hydro Power Corporation (NHPC). Construction of the project has been underway since 2005.
The project cost was met through a term loan provision with 70% equity and 30% debt financing. The Central Government is providing budgetary support as part of the equity component.
With the commissioning of Unit # 2, the project is rapidly moving towards commissioning of three units of 250 MW each, followed by the phased commissioning of the remaining four units during the year 2026-27.
When fully operational, the 2000 MW Subansiri Lower Hydroelectric Project will make a significant contribution to India’s renewable energy capacity, enhance national grid stability, and usher in a new era of large-scale clean energy contribution.
The Subansiri Lower H.E. Project is an example of engineering excellence, featuring India’s heaviest hydro generator rotor, the largest stator and the largest main inlet valves, along with innovations such as the country’s largest aggregate processing plant, the highest capacity batching plant, and the first-time use of Rotec’s tower belt for dam concreting in India.
As the first cascaded dam on the Subansiri river, it provides flood control with a flood cushion of 442 million cubic metres. With a total reservoir storage of 1,365 million cubic metres at FRL, nearly one-third of the capacity remains vacant during floods to absorb excess water and protect downstream communities.

Subansiri River:

Subansiri, or the “Golden River”, is the largest tributary of the upper Brahmaputra River.
The Brahmaputra River is a major river of Asia, originating from the Chemayungdung Glacier near Mansarovar Lake in Tibet (China), where it is called ‘Sangpo’.
Flowing through Arunachal Pradesh (Dihang/Siang) and Assam in India, it is known as ‘Jamuna’ in Bangladesh, joins the Ganga to form the Sundarbans Delta and empties into the Bay of Bengal, making it the lifeline of North-East India, on which the world’s largest river island Majuli is located.
Brahmaputra River length: approximately 2,900–3,969 kilometres (overall).
Brahmaputra River tributaries: Lohit, Dibang, Manas, Subansiri, Kameng, Teesta etc.

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National Current Affairs

Economy

Subansiri Lower Hydropower Project Unit-2 Operational

Economy

Subansiri Lower Hydropower Project Unit-2 Operational

Utkarsh Classes

Updated: 25 Dec 2025

3 Min Read

On 23 December, 2025, through virtual mode, the commercial operation of Unit-2 (250 MW) of the run-of-the-river Subansiri Lower Hydroelectric Project located in Arunachal Pradesh was inaugurated.

Union Minister for Power, Housing and Urban Affairs Shri Manohar Lal on 23 December, 2025, through virtual mode, inaugurated the commercial operation of Unit-2 (250 MW) of the 2000 MW (8×250 MW) Subansiri Lower Hydroelectric Project.
As India’s largest hydropower project, the Subansiri Lower Project includes eight units of 250 MW each and is designed as a run-of-the-river scheme with a small pondage, which diverts water through eight head race tunnels (HRTs) to generate 7,422 million units (MU) of renewable power annually, making a significant contribution to India’s green energy future.
In addition to supplying power to 16 beneficiary states across India, the Subansiri Lower H.E. project will provide free power to Arunachal Pradesh and Assam, while the North-East region will receive 1,000 MW of electricity from the project, significantly strengthening regional energy availability.
This project includes the largest dam in North-East India, a 116-metre-high concrete gravity dam, which not only strengthens regional infrastructure and grid stability, but also enhances flood control and water management in the Subansiri river basin.

Subansiri Lower Project

It is located at Gerukamukh on the Arunachal Pradesh–Assam border. On completion, it will be India’s largest hydroelectric plant.
This project is being developed by the government-owned National Hydro Power Corporation (NHPC). Construction of the project has been underway since 2005.
The project cost was met through a term loan provision with 70% equity and 30% debt financing. The Central Government is providing budgetary support as part of the equity component.
With the commissioning of Unit # 2, the project is rapidly moving towards commissioning of three units of 250 MW each, followed by the phased commissioning of the remaining four units during the year 2026-27.
When fully operational, the 2000 MW Subansiri Lower Hydroelectric Project will make a significant contribution to India’s renewable energy capacity, enhance national grid stability, and usher in a new era of large-scale clean energy contribution.
The Subansiri Lower H.E. Project is an example of engineering excellence, featuring India’s heaviest hydro generator rotor, the largest stator and the largest main inlet valves, along with innovations such as the country’s largest aggregate processing plant, the highest capacity batching plant, and the first-time use of Rotec’s tower belt for dam concreting in India.
As the first cascaded dam on the Subansiri river, it provides flood control with a flood cushion of 442 million cubic metres. With a total reservoir storage of 1,365 million cubic metres at FRL, nearly one-third of the capacity remains vacant during floods to absorb excess water and protect downstream communities.

Subansiri River:

Subansiri, or the “Golden River”, is the largest tributary of the upper Brahmaputra River.
The Brahmaputra River is a major river of Asia, originating from the Chemayungdung Glacier near Mansarovar Lake in Tibet (China), where it is called ‘Sangpo’.
Flowing through Arunachal Pradesh (Dihang/Siang) and Assam in India, it is known as ‘Jamuna’ in Bangladesh, joins the Ganga to form the Sundarbans Delta and empties into the Bay of Bengal, making it the lifeline of North-East India, on which the world’s largest river island Majuli is located.
Brahmaputra River length: approximately 2,900–3,969 kilometres (overall).
Brahmaputra River tributaries: Lohit, Dibang, Manas, Subansiri, Kameng, Teesta etc.

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Utkarsh Classes’ National Current Affairs provides the most relevant and updated coverage of important national news for all government competitive exams, including RPSC RAS, SSC, Railway, Defence, Teaching, Banking, and other State and Central-level exams. Aspirants can enhance their understanding of central government policies, national welfare schemes, political developments, and social issues that shape India today.

Here, you’ll get the most accurate updates on current affairs topics, including Economy, Polity, Science & Technology, Environment, Awards & Honours, Appointments, and major national events, all in one place.

Importance of National Current Affairs in Exam Preparation

National current affairs play a big role in preparing for government exams for several reasons:

Direct Link with the Exam Syllabus: Almost all government exams, like RAS, UPSC, SSC, Railway, Defence, and Teaching, include national current affairs and static GK questions based on the current affairs as an essential part of the syllabus. Understanding recent events in India helps candidates manage both static and dynamic sections effectively.
Improves understanding and thinking ability: For aspirants preparing for administrative services (Like RPSC RAS, UP PCS, UPSC IAS, etc.), it’s important to understand how national policies, laws, and reforms influence governance and public welfare. Analysing these national developments enhances problem-solving and analytical thinking skills.
Helps in Interview and Mains Answer Writing: During interviews for various government exams, candidates are often asked questions based on the National current affairs and their implications on society, economy, and governance. A good command of current events enables you to express well-informed opinions in interviews as well as descriptive papers.
Increases awareness of India’s development: Knowledge of ongoing national initiatives, such as government schemes, infrastructure projects, national security updates, and environmental actions, helps in developing a holistic understanding of India’s progress and challenges.
Links Static GK Concepts with Daily Current Affairs: Most questions in competitive exams combine static GK facts and current events topics. For instance, questions about government ministries, new schemes, or national awards often require both factual recall and contextual awareness of today’s current affairs in India.

Key Focus Areas of National Current Affairs

To make exam preparation easier, candidates must focus on the following important news as most of the questions are asked from these:

Indian Polity and Governance: Stay updated on government bills, constitutional amendments, cabinet decisions, and national policies. Learn about reforms in governance, public administration, and initiatives under programs like Digital India, Smart Cities, and Swachh Bharat Mission.
Indian Economy and Finance: Understand major trends in the Indian economy, important from the Union Budget, RBI policies, taxation changes, and economic surveys. Keep track of growth indicators like GDP, inflation, and employment reports that are often asked in exams.
Science, Defence and Technology: Stay updated about the latest ISRO missions, defence advancements, and scientific research. Stay updated on India’s progress in innovation, artificial intelligence, space exploration, and new technology initiatives under Make in India.
Environment and Sustainability: Get updates on climate policies, biodiversity efforts, renewable energy projects, and India’s national commitments under environmental conventions.
Awards, Appointments, and Important Days: Revise national-level awards (Padma Awards, Bharat Ratna), key appointments, and major national important days that are frequently covered in current affairs for competitive exams.

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Utkarsh Classes provides daily national current affairs news and free downloadable PDFs to help you stay updated and revise important topics for government exams. You get all major national updates in one place, useful for Prelims, Mains, and Interview preparation.

News-Based Daily Coverage: Get reliable and exam-focused daily current affairs news covering national events, government policies, economy, banking, defence, and more. All updates come from trusted sources and are explained by the subject matter experts in simple language for better understanding.
Free PDF Downloads for Revision: Download daily, weekly, and monthly current affairs PDFs completely free. These compilations help you revise important facts, schemes, and reports quickly before the exam.
Exam-Focused Presentation: Every topic is selected after analysing previous year questions of SSC, RAS, Defence, and Railway exams so that you focus only on what is important for your preparation.

How to Prepare for National Current Affairs?

Preparing for national current affairs becomes easy if you follow this planned approach:

Start with PYQs: Check previous exam papers of your exam to understand what type of current affairs questions are asked, such as government schemes, committees, and budget highlights.
Study Static GK Facts linked to the National News: Try to connect national news and CA updates with the facts behind those news with subjects like Polity, Economy, and Geography. This helps you understand the background of each topic better
Regularly Revise National Current Affairs: Download Utkarsh’s Daily, Weekly, and Monthly Current Affairs PDFs to revise all important national topics quickly and easily.

Explore the latest National Current Affairs with Utkarsh Classes and make your exam preparation stronger every day.

FAQs

Que- Why are National Current Affairs important for government exams?

National current affairs are important for government exams because they cover important recent National news, policies, and developments frequently asked in exams. Staying updated with them strengthens your general awareness, helps you think better, and supports you in both objective and descriptive parts of the competitive exams.

Que- How many months of National Current Affairs should I study for exams?

You should prepare at least 6 to 12 months of National Current Affairs for all competitive exams.

Que- What type of National Current Affairs questions are asked in exams?

Most exams include questions on National Current Affairs, such as government schemes, new appointments, national awards, events, health and schemes, and economic policies.

Que- Are Utkarsh’s National Current Affairs PDFs useful for all exams?

Yes, Utkarsh’s National Current Affairs PDFs are useful for all exams that include India GK or General Awareness subjects.

Que- How does Utkarsh Classes help in preparing for National Current Affairs?

Utkarsh Classes provides daily current affairs news and free downloadable PDFs of National Current Affairs to make your preparation and revision easier.