India currently operates 24 nuclear power reactors with a total installed capacity of 8.78 gigawatts (GW), and has nine reactor units with a combined capacity of 7.5 GW under active construction, according to an official factsheet released on Friday, 28 August. The country is on a structured path toward achieving 100 GW of nuclear power capacity by 2047, a target that has now been backed by a wave of policy and legislative action.

Key Policy Drivers

Two landmark initiatives are accelerating India's nuclear expansion: the Nuclear Energy Mission (2025–26) and the SHANTI Act, 2025. Together, they are designed to scale capacity, deepen domestic manufacturing, foster innovation, and — critically — open the sector to greater private sector participation, a significant structural shift for an industry that has historically been state-dominated.

The government has also approved 10 indigenous Pressurised Heavy Water Reactors (PHWRs) to be built in fleet mode, a batch-production approach intended to reduce costs and construction timelines. Pre-project activities are additionally under way for two 500 MW Fast Breeder Reactors (FBRs), which form a cornerstone of India's longer-term fuel strategy.

The Three-Stage Nuclear Programme

India's nuclear roadmap is anchored in its indigenously designed three-stage nuclear power programme, which charts a gradual transition from uranium-based fuel cycles to thorium-based fuel cycles. This strategy was originally conceived to circumvent historical fuel embargoes and to leverage India's vast thorium reserves — among the largest in the world.

Notably, India is among a handful of countries that possess vitrification technology for high-level radioactive waste, a process that converts such waste into a stable glass form for safer long-term storage, transport, and eventual disposal. This capability underscores the depth of India's indigenous nuclear fuel cycle development, which spans reactor design, fuel fabrication, and waste management.

Why Nuclear, Why Now

The official statement positioned nuclear energy as central to India's long-term energy security, citing growing demand for clean, reliable, and stable baseload electricity. Unlike solar and wind, nuclear provides round-the-clock, low-carbon generation, making it a natural complement to intermittent renewables while ensuring grid stability.

This comes amid India's broader climate commitments and a strategic imperative to reduce dependence on imported fossil fuels. The 100 GW nuclear target by 2047 — coinciding with the centenary of Indian independence — is framed as both an energy security milestone and a clean energy declaration.

What This Means for India's Energy Mix

With 8.78 GW currently operational and 7.5 GW under construction, India's near-term nuclear capacity could approach 16 GW once ongoing projects are commissioned. Reaching 100 GW by 2047 would require a sustained, multi-decade build-out at a pace India has not previously achieved in the nuclear sector. The fleet-mode approval for PHWRs and private sector entry are seen as the key mechanisms to bridge that gap.

Industry observers will watch whether the SHANTI Act's private participation framework translates into actual investment commitments in the near term, as that will be the earliest indicator of whether the 100 GW ambition is on track.