India plans to expand nuclear capacity to 100GW by 2047, requiring an estimated investment of Rs 15-25 lakh crore. With the SHANTI Act now allowing private and foreign participation, the sector is shifting from a state-run model to a hybrid one. Investors should track the high capital costs, long execution timelines, and potential tariff competition with solar and wind energy.
India has laid out an ambitious roadmap to reach 100 gigawatts (GW) of nuclear power capacity by 2047. This initiative, guided by the Central Electricity Authority (CEA), marks a significant attempt to secure grid stability as the country’s peak power demand is expected to reach 459 GW by 2035-36. To hit this target, the nation will need to invest an estimated Rs 15 lakh crore to Rs 25 lakh crore, a massive capital outlay that signals a fundamental shift in how the country manages its baseload power supply.
Opening the Sector to Private Capital
Historically, the nuclear energy sector in India was strictly controlled by government entities. However, the landscape changed with the enactment of the SHANTI Act (Sustainable Harnessing and Advancement of Nuclear Energy for Transforming India) in December 2025. This legal framework now allows private and foreign companies to participate in the nuclear energy space. The government expects the private sector to contribute roughly 30 GW to the total 100 GW target, with private players likely needing to invest around Rs 7.5 lakh crore of the total required capital.
The Financial and Operational Challenge
For investors, this sector presents a mix of long-term opportunity and significant risks. Nuclear projects are capital-intensive, with costs often estimated at Rs 25 crore per megawatt. Unlike solar or wind power projects, which can be commissioned in months, nuclear plants require 5 to 7 years to build. This long gestation period creates substantial financial pressure, as companies must manage heavy debt and interest costs for years before the project begins to generate electricity and revenue.
One of the primary concerns for analysts is the economic viability of nuclear power. Because solar and wind energy production costs have fallen significantly, nuclear power tariffs may be higher. This could lead to difficulties in signing long-term power purchase agreements with state electricity distribution companies, which prioritize low-cost electricity. Additionally, the sector currently lacks specialized insurance products to protect lenders and participants against nuclear-specific risks, such as operational hazards or liability issues.
NTPC and Market Monitorables
Public sector giants are already adjusting their strategies to align with this push. NTPC Limited, for example, is actively targeting 30 GW of nuclear capacity as part of its wider 10-year investment plan, which involves a massive Rs 17 lakh crore outlay. The participation of such large state-backed entities serves as a proof of concept for the broader market, as they can absorb the initial risks better than smaller players.
Investors looking at this space should move beyond the government's headline capacity targets. The key monitorables will be the actual order books of companies involved, the terms of future power purchase agreements, and the ability of firms to secure fuel supplies, such as uranium, which remains critical for operations. Given the complexities of nuclear liability and the need for site clearances, market participants may focus on the execution track record of these companies rather than just the announcement of new projects.