Dams, Demands, and Dilemmas: India’s Hydropower Journey


Hydropower is more than just electricity from rivers—it is a story of ambition, conflict, and balance. By walking through these five pillars, readers will uncover how India’s hydropower journey has unfolded in contrast to China’s, where it stands today, the challenges holding it back, the immense untapped potential waiting to be harnessed, and the pathways for a sustainable future. Together, these insights reveal not only the dams we build, but also the dilemmas we face and the choices that will shape India’s energy security and ecological balance in the years ahead.

Pillar 1: Dams in India vs China
Hydropower development in India and China presents a stark contrast in pace, policies, and outcomes. Both nations recognized the role of dams in ensuring water and energy security, yet their trajectories diverged significantly after the 1990s.
Case of India:
The “Lost Decade” of the 1990s: Large dam construction slowed as policy focus shifted to rainwater harvesting and check dams. Environmental activism intensified, and the Supreme Court imposed a six-year stay on the Sardar Sarovar Dam on the Narmada River.
Financing Constraints: The World Bank and the Asian Development Bank withdrew financing for large dams, citing environmental and social concerns.
Hydropower Growth: Installed capacity remained modest—21 GW in 2000, compared to 77 GW in China. By 2024, India had reached 42 GW, while China expanded to 435 GW (CEA, 2024).
Global Role: India’s recent growth has been stronger, adding 14 GW in 2024, which accounted for nearly 60% of global additions that year (International Hydropower Association, 2024).
Case of China:
Planned Expansion: Under the 12th Five-Year Plan (2011–2015), China set a target of 140 GW of new hydropower. By the end of the plan, total installed capacity stood at 319 GW.
West–East Electricity Transfer Project: Hydropower from western provinces such as Sichuan and Yunnan was transmitted to energy-hungry coastal hubs like Shanghai through Ultra High Voltage (UHV) transmission lines.
Mega-Dams as National Projects: Large dams became national symbols. The Three Gorges Dam, fully commissioned in 2012, has an installed capacity of 22.5 GW, making it the world’s largest power station.
Policy Backing: The Renewable Energy Law (2006) introduced mandatory grid connection for renewable generators and a feed-in tariff system that guaranteed stable pricing for hydropower plants, ensuring investor confidence and large-scale deployment.

Pillar 2: Status of Hydropower in India
Hydropower continues to play an important role in India’s renewable energy landscape, though its share has gradually declined with the rapid rise of solar and wind.
Installed Capacity: As of June 2025, India’s total installed hydropower capacity stood at 54 GW (Central Electricity Authority). In 2024–25 alone, around 800 MW of new large hydro capacity was added.
Contribution to Energy Mix: Hydropower accounted for nearly 40% of renewable energy generation and 8.76% of total electricity generation in 2024–25. Despite this modest share, it remains crucial for grid stability and peak load management.
Policy Push – The Decade of Hydropower (2025–2035): Recognizing its strategic role, the Government of India has announced a dedicated policy thrust for hydropower.
The targets include:
  • Adding 58,000 MW of capacity by 2035 through a mix of mega, large, and small hydro projects.
  • Mandating 12% free power from each hydro project to the host state.
  • Allocating 1% of the project cost as a local area development fund.
  • Generating more than ₹45,000 crore annually in revenue by 2035.
Renewable Energy Mix: As of March 2025, India’s renewable energy capacity exceeded 220 GW, of which hydropower (large + small) formed a significant pillar, alongside solar and wind.

Pillar 3: Issues with Hydropower Generation
Despite its importance, India’s hydropower sector faces significant challenges rooted in climate, geography, and planning.
Climatic and Environmental Factors:
  • Declining Output: In 2023–24, India’s hydropower generation fell to its lowest in four decades, contributing just 8.3% of total electricity (CEA data).
  • Dependence on Rainfall: As a monsoon-driven country, erratic rainfall patterns severely affect generation. For example, Cherrapunji receives over 10,820 mm of rain annually, yet 80% of it falls in just 120 hours, leading to intense floods followed by scarcity in non-monsoon months.
  • Climate Change Impacts: Increasing extreme weather events (EWE), glacier melt, and thawing permafrost threaten the long-term reliability of Himalayan hydropower.
Planning and Execution Issues:
Case of Teesta-3 Project (Sikkim & West Bengal):
  • Located in difficult Himalayan terrain, the project faced erratic rainfall, unconsolidated sediment, and poor environmental assessment.
  • Cost-cutting in dam design (concrete-faced rockfill) made it vulnerable, and parts were washed away in flash floods.
  • Poor planning led to loss of lives, property disputes under Article 300A, and public opposition. Out of 47 projects proposed in the 1990s, only 5 were eventually completed.
Risky Himalayan Projects: The Ravi Chopra Committee (appointed after the Kedarnath floods of 2013) warned that large hydropower projects in fragile Himalayan zones have an “irreversible impact” on ecology. The Ministry of Jal Shakti’s 2019 report also cautioned that hydropower projects can alter downstream ecological flows.
Structural Constraints:
  • Storage Deficit: India lacks adequate water storage infrastructure, despite being a monsoon country. It holds only 4% of global water reserves to serve 18% of the world’s population.
  • Low Reservoir Levels: Rising water usage and wastage have led to declining reservoir capacity, undermining generation potential.
Pillar 4: Hydropower Potential in India
India is endowed with vast hydropower resources, yet its utilization has remained limited compared to its potential. According to the Central Electricity Authority (CEA), the country’s economically feasible hydropower potential is estimated at nearly 145 GW, but as of June 2025, only 54 GW has been harnessed. This represents just over one-third of the available potential.
Geographical Distribution:
  • Northern & Northeastern states account for nearly 60% of untapped potential, particularly in Arunachal Pradesh, Uttarakhand, Himachal Pradesh, and Jammu & Kashmir.
  • The North-East alone holds 58 GW of identified potential, but development is constrained by fragile geology, accessibility issues, and socio-political sensitivities.
Small Hydro Power (SHP): In addition to large dams, India has a potential of over 20 GW in small hydro projects (≤25 MW), of which around 5 GW has been tapped (MNRE, 2024). These projects are particularly significant for rural electrification and off-grid applications.
Storage vs. Run-of-River: A majority of projects developed in recent years are run-of-river due to fewer environmental and resettlement issues. However, storage dams—though controversial—are vital for irrigation, flood moderation, and grid balancing.
Regional Imbalances: States like Arunachal Pradesh are considered the “hydropower house of India,” but face difficulties in evacuation infrastructure. Meanwhile, states with lower potential (like Maharashtra, Madhya Pradesh, and Karnataka) have already tapped a higher share of their capacity.
Global Comparison: While India has tapped about 38% of its hydropower potential, China has developed nearly 70%, reflecting a gap in policy execution and project implementation.

Thus, while the resource base is strong, India’s challenge lies in converting theoretical potential into sustainable projects, balancing ecological sensitivity with energy security.

Pillar 5: The Way Forward
Given the challenges highlighted earlier, India’s hydropower sector requires a multi-dimensional strategy to achieve its potential while ensuring environmental and social safeguards.
Policy and Financial Reforms:
  • The Government of India has already declared large hydro (>25 MW) as renewable energy (2019 notification), making projects eligible for Renewable Purchase Obligations (RPOs).
  • Greater access to concessional finance, sovereign green bonds, and viability gap funding (VGF) mechanisms can reduce the high upfront costs of hydropower.
  • Encouraging public-private partnerships (PPPs) with clear risk-sharing frameworks will attract private investment in mega projects.
Grid Integration and Flexibility:
  • Hydropower’s real value lies in its ability to provide peaking power and grid balancing for India’s fast-growing solar and wind base.
  • Investments in pumped storage projects (PSPs) are critical. The CEA has identified a 120 GW PSP potential, of which ~3 GW is operational. Expediting PSPs will ensure renewable stability.
Ecological and Social Safeguards:
  • Strict adherence to environmental impact assessments (EIAs), biodiversity protection, and cumulative basin-level planning is needed, especially in the Himalayas.
  • Implementation of the Ravi Chopra Committee recommendations after the Kedarnath floods can help mitigate disaster risks.
  • Resettlement and rehabilitation (R&R) frameworks must be strengthened to ensure equitable benefits for affected communities.
Technological Modernization:
  • Renovation and modernization of India’s aging hydropower plants (20–30+ years old) can improve efficiency by 5–10% without new ecological disruption.
  • Digital monitoring, predictive maintenance, and sediment management technologies can extend plant life and reliability.
Regional Cooperation:
  • Cross-border hydropower cooperation with Bhutan, Nepal, and Myanmar can enhance energy security and regional stability. India already imports approximately 2.2 GW from Bhutan and is exploring further joint ventures.
Climate-Resilient Hydropower:
  • Projects must be designed with climate adaptation in mind—accounting for glacier retreat, altered rainfall, and flash flood risks.
  • Developing reservoir optimization strategies and early warning systems will be key to resilient operations.
My Perspective:
In my view, the future of hydropower in India lies in smart choices, not just bigger numbers. Pumped storage hydropower offers a practical pathway to meet peak demand hours while ensuring grid stability in a renewable-heavy future. With India being a peninsula surrounded by water on three sides, we should leverage this natural advantage more effectively. Regions like Cherrapunji, which witness some of the world’s highest rainfall, could serve as models for large-scale rainwater harvesting linked to hydropower generation.
At the same time, while large dams will continue to be vital for energy security, irrigation, and flood control, they cannot come at the cost of ecological balance. The Himalayan belt, despite its enormous hydropower potential, is a geologically fragile region. Excessive dam-building here risks destabilizing ecosystems and endangering communities downstream.
The way forward, therefore, is not an “either-or” choice but a balanced strategy—expanding hydropower while embedding sustainability at its core. If India can combine technological innovation, pumped storage, rainwater utilization, and sensitive ecological planning, hydropower can truly become the backbone of a resilient and sustainable energy future.