India’s electricity demand will nearly quadruple by 2047. Solar and wind cannot carry that load alone. The time to build the next generation of baseload is not 2040 — it is today.
Disclosure: The author is co-founder of ASPL Fusion, a private Indian fusion company. This article presents an industry perspective on national energy policy. The policy arguments are grounded in publicly available data; the ASPL programme description in Section 5 is provided as a concrete illustration of what a domestic fusion development path can look like in practice.
At a Glance — For Decision-Makers
708 GW peak demand and 2,100 GW total capacity needed by 2047 — the equivalent of building a new US power grid from scratch.
Intermittent renewables alone cannot provide firm power — grid stability requires large-scale dispatchable baseload even with abundant storage.
Fusion now has serious private capital behind it: Microsoft, Google, and OpenAI are structuring power purchase agreements with fusion companies. India risks being a technology importer.
Three budget-cycle asks for 2026: fusion in National Energy Plan · dedicated component development fund · AERB regulatory engagement mandate.
Key Number
India’s Central Electricity Authority projects peak power demand reaching 708 GW by 2047 — four times today’s installed capacity. Meeting it requires 2,100 GW of generation: close to the entire current installed capacity of the US and EU combined. That is the scale of infrastructure build India must manage across the next two decades.
The Grid Stability Signal India Is Already Receiving
I led the preparation of India’s Technology Vision 2035 at TIFAC — the 2016 mandate formally released by Prime Minister Modi — and one of the hardest conversations we had was about energy. Not whether India could install enough solar panels — we could, and we have. The hard conversation was about what happens at 7pm, when the sun has set, the wind is calm, and half a billion air conditioners switch on across a continent-sized country simultaneously.
India is now discovering, at 224 gigawatts of installed renewable capacity, that the grid stability problems we modelled as future risks are arriving as present emergencies. In 2025, the National Load Dispatch Centre had to curtail 23 gigawatts of renewable energy between May and November to prevent grid oscillations. Rajasthan saw nearly 4 GW of solar and wind curtailed in a single season. Grid frequency exceeded its prescribed ceiling on 39 days in Q3 and Q4. These are structural signals, not teething problems.
Grid upgrades, better markets, and more storage are all necessary — but even a fully upgraded grid with abundant storage still needs large volumes of firm, dispatchable power. That is the baseload gap fusion must fill.
Grid Reality Check — 2025: India’s Curtailment Crisis
In 2025, India had to curtail 2.3 TWh of solar generation — approximately 18% of average monthly solar output — at a cost of ₹5,750–6,900 million, because the grid could not absorb midday solar surges. Grid frequency exceeded safe limits on 39 days. This is happening at 224 GW of renewables. The problem will compound as India adds capacity toward 500 GW by 2030 without commensurate investment in firm, dispatchable baseload.
Source: Ember, January 2026; Business Standard, March 2026
What Solar and Wind Can and Cannot Do
I am not making an argument against renewable energy. India’s solar programme is one of the great engineering achievements of the 21st century. But the fundamental constraint is physics. The sun does not shine at night. The wind does not blow on demand. Solar peaks between 10am and 2pm; electricity demand peaks between 6pm and 10pm. This mismatch requires either massive battery storage, dispatchable backup, or demand-side flexibility at a scale that does not yet exist.
India currently has 2 GW of operational battery energy storage — against a requirement of hundreds of GW to fully back a renewable-dominated grid. Backing even 500 GW of renewables with 4 hours of storage implies ~2,000 GWh installed — one thousand times current capacity. The materials required — lithium, cobalt, graphite, rare earths — are a supply chain and geopolitical problem: China controls 70% of graphite and 60% of rare earth production today.
Replacing one import dependence with another is not energy security. It is supply chain substitution.
The Baseload Gap and the Case for Firm Power
India’s baseload today comes overwhelmingly from coal — 84% of total energy needs in 2024 were met by fossil fuels. Displacing coal requires an alternative that provides firm, dispatchable, high-capacity-factor power. India’s fission programme under DAE and NPCIL is serious and valuable. But the pipeline of approved and funded capacity is insufficient to fill the 2047 gap. This is precisely where fusion enters the strategic conversation — not as a replacement for renewables or fission, but as the technology that could provide gigawatt-scale firm power by the 2040s and 2050s without fuel import dependency, long-lived radioactive waste, or significant proliferation risk.
| Parameter | Coal | Fission Nuclear | Fusion |
|---|---|---|---|
| Carbon Emissions | High | Near Zero | Near Zero |
| Firm / Dispatchable | Yes | Yes | Yes |
| Fuel Import Dependency | 25% imported | Uranium imported | Seawater deuterium |
| Long-Lived Waste | Fly ash (toxic) | Yes — millennia | No (D-T: decades) |
| Land Footprint | Low | Low | Very Low — far less than 700+ GW of solar/wind |
| Deployment Timeline | Available now | 10–15 yr/plant | 2040s (invest now) |
| Proliferation Risk | None | Moderate | Very Low |
Baseload options for India 2047. Land footprint is a material constraint — deploying 700+ GW of solar/wind requires land areas comparable to entire Indian states.
Fusion’s Timeline: Honest and Achievable
The honest answer to ‘when will fusion power be available?’ is: starting in the late 2020s and early 2030s, with large-scale grid contributions spreading in the 2040s and 2050s in the most optimistic credible scenarios. This sounds distant until you remember that decisions about 2047 energy infrastructure must be made now. Power plants take 10–15 years from investment decision to first electricity. Regulatory frameworks, supply chains, and institutional knowledge take decades to build.
Fusion is not guaranteed on any fixed date — but planning for a world where it succeeds is a low-regret hedge compared to betting solely on imported fuels or critical minerals. A staged programme that generates revenue from day one limits downside while preserving the full upside of energy sovereignty.
Technology Vision 2035 — The 2016 Mandate
The TIFAC Technology Vision 2035 — produced through a consultative process involving ~5,000 experts and formally released by Prime Minister Modi on 3 January 2016 — explicitly listed Nuclear Fusion and the Fusion-Fission Hybrid Reactor among enabling technologies for India’s 24×7 energy prerogative. Both were placed in the ‘targeted research required’ stage. That was a decade ago. The engineering stage is here. The global private sector is writing purchase orders for it.
Economics Note: What Will Fusion Cost? The LCOE Question
Current estimates for first-of-kind fusion plants range from $50–150/MWh LCOE — higher than utility-scale solar at $25–40/MWh today. The same logic that applies to solar’s system cost (add $30–60/MWh for storage and firm backup) applies in reverse to fusion: first-of-kind plants carry a technology risk premium in their financing cost that will compress only as the technology matures.
The most effective way to reduce fusion’s financing cost is to reduce the technology risk — which is precisely what a staged programme does. Generating commercial revenue from medical isotope production and industrial neutron testing before the fusion power milestone means the capital at risk in the early phases is backed by near-term cash flows, not distant power-sector projections. This is how the technology risk premium comes down.
Beyond electricity: a fourth factor that headline LCOE comparisons miss is high-grade industrial heat. Steel, cement, chemicals, and glass — the ‘hard-to-abate’ sectors accounting for ~20% of India’s emissions — require process heat at 800–1,500°C. Batteries cannot deliver this. Solar PV cannot deliver this. A fusion plant can.
Cost projections converge toward $40–60/MWh by the 2040s, with the financing premium compressing as early commercial plants reduce perceived risk.
One Device: A Waste Processor, a Fuel Factory, and a Power Plant
The most compelling argument for fusion’s strategic value is that a single device can simultaneously process India’s existing stockpile of nuclear waste (reducing its hazard period from ~100,000 years to ~300–500 years), breed fissile U-233 from India’s 525,000-tonne thorium reserve, and deliver firm electricity to the grid — while accumulating the helium-3 fuel needed for the next generation of clean fusion power plants. No other technology on any horizon combines those four national priorities in one facility.
That is what a fusion-fission hybrid device does. It is not a science fiction proposition — the sub-critical neutron physics are internationally demonstrated, and the engineering stage has begun in India.
The Energy Security Dimension
India imported 88.9% of its crude oil, 43.3% of its natural gas, and 25% of its coal in 2023. Fusion uses deuterium — extractable from seawater in effectively unlimited quantities at negligible cost. There is no fuel import dependency, no OPEC equivalent, no cartel to negotiate with. A fusion-powered India would be, in the most meaningful sense, energy sovereign.
Illustrative scenario. With fusion contributing ~15% firm baseload, fossil dependence falls below 20%. Proportions indicative, not official projections.
The Global Race Has Shifted Gear
In March 2026, Power Magazine reported that OpenAI is in active discussions to purchase electricity from Helion Energy. Microsoft signed the world’s first fusion PPA with Helion in 2023; Google signed a deal with Commonwealth Fusion Systems in 2025. Helion’s 7th-generation Polaris prototype became the first privately developed machine to demonstrate measurable deuterium-tritium fusion at 150 million degrees Celsius (February 2026).
These PPAs are not evidence that fusion will be delivered on their stated timelines — Helion has not yet achieved net energy gain, and aspirational targets from pre-commercial companies should be treated with appropriate caution. What they do demonstrate is the scale and seriousness of private capital commitment: the largest electricity consumers in history are structuring power purchase agreements around fusion. That is a market signal about where informed, long-horizon capital believes the technology is going.
The 2016 mandate identified this strategic moment a decade in advance. If India has no domestic fusion demonstration programme of consequence, we will arrive at the 2040s as importers of fusion technology — precisely as we arrived at the solar decade as importers of solar panels.
Global Benchmark: The Scale of Private Capital Commitment
OpenAI / Helion: discussions for multi-GW power purchase (Power Magazine, March 2026). Targets are aspirational; Helion has not yet achieved net energy gain.
Microsoft / Helion: world’s first fusion PPA signed 2023 — a commercial signal, not a guaranteed delivery.
Google / Commonwealth Fusion Systems: deal signed 2025.
Helion Polaris 7th-gen: first private D-T fusion, 150 million °C plasma (February 2026) — a physics milestone, not net energy.
The significance is not the delivery dates but the commitment of this class of capital at this scale. Policymakers should price this signal accordingly.
Addressing the Strongest Objections
A credible policy case must engage with the most serious counterarguments. Three deserve direct response:
Objection 1: Why not simply scale fission faster? Small Modular Reactors are closer to deployment.
SMRs are real, commercially closer, and India should pursue them. But SMRs share fission’s structural constraints: uranium import dependency, long-lived radioactive waste requiring geological disposal, and nuclear liability exposure under the SHANTI Act 2025 — which replaced CLNDA 2010 and, while enabling private participation, retains operator liability capped at ₹100–3,000 crore depending on reactor size. SMRs are a bridge technology, not the end-state. Fusion and SMRs are not competing alternatives — they are sequential bets in a portfolio approach to decarbonising baseload. The question is not SMRs or fusion; it is whether India builds the fusion capability now so it can deploy in the 2040s, or arrives at that decade with no domestic programme and must import.
Objection 2: What if fusion timelines slip to the 2060s?
This is the right question to ask, and the honest answer is: it is possible. But timeline uncertainty is not a reason to delay — it is a reason to design programmes that generate value at current technology readiness levels, independent of when fusion power plants arrive. India already has near-term needs that fusion-adjacent technologies can address today: a growing medical isotope deficit, a spent nuclear fuel stockpile requiring management, a 525,000-tonne thorium reserve awaiting conversion to U-233, and plasma physics human capital at IPR that will atrophy without a credible engineering programme to anchor it. A fusion investment that builds toward power generation while generating returns from these near-term applications has a bounded downside and an unbounded upside. That is exactly the risk profile a national strategic investment should have.
Objection 3: What is the opportunity cost of diverting funds from proven technologies?
The government asks being made here are modest in absolute terms: a regulatory engagement mandate for AERB (a policy directive, not a budget line), a PLI-style component development fund (analogous to India’s PLI schemes for solar cells and batteries already executed), and recognition of fusion in the National Energy Plan (a planning document revision). None of these divert funds from solar, wind, or fission deployment. They create the institutional infrastructure without which no amount of future funding can substitute. Indeed, the SHANTI Act 2025 — which overhauled six decades of nuclear law in a single Parliament session in December 2025 — proves India is capable of exactly this kind of foundational reform when the strategic need is clear.
What Government Must Do: Budget-Cycle-Aligned Asks
The policy actions required are sequenced by decision horizon:
Tier 1 — This Budget Cycle (Union Budget 2026–27)
1. Include fusion in the National Energy Policy framework. Fusion should appear explicitly in the 2030–2047 planning horizon with milestones and investment commitments attached. This is a planning document revision, not a capital allocation — it costs nothing and signals intent.
2. Establish a Fusion Component Development Fund on a PLI-style mechanism for superconducting magnets, plasma diagnostics, tritium handling, and high-heat-flux materials. Build domestic supply chains before global demand outstrips availability.
Tier 2 — Three-Year Build (2026–2029)
3. Issue an AERB regulatory engagement mandate for fusion. The SHANTI Act 2025 — passed by Parliament in December 2025 — has already opened nuclear energy to private Indian companies for the first time, granting statutory status to AERB and creating a modern unified regulatory framework. The next step is a fusion-specific pathway within this framework, as the UK did with its Energy Act 2023. India’s emerging private fusion sector is already generating the first regulatory touchpoints — accelerator licencing for neutron generators, plasma device safety authorisations — that will become the foundation of a broader fusion regulatory framework. Starting the AERB engagement now ensures that framework is built from practical experience, not extrapolation from fission precedent.
4. Recognise private fusion companies as strategic national assets. They need access to DAE and IPR expertise, AERB engagement, government procurement for early products, and patient capital matched to the technology development timeline.
Tier 3 — Five-Year Horizon (By 2030)
5. Establish a Fusion Technology Sandbox in Gujarat. ASPL Fusion is operational at Sector 28 GIDC, Gandhinagar — adjacent to the Institute for Plasma Research and steps from ITER-India. The human capital is already concentrated here: plasma physicists, accelerator engineers, cryogenics specialists. A formal public-private partnership designating this corridor as a Fusion Innovation Zone leverages existing assets rather than creating new ones from scratch. Gujarat’s answer to the fusion valleys around MIT and Culham is already partly built.
From Why to How: Starting in Gandhinagar Tomorrow
India has achieved something remarkable in the last decade: the fastest growth of renewable energy capacity in the world, at costs that have redefined what clean energy economics means. That achievement is real and deserves celebration.
But the grid oscillations of 2025, the curtailment crisis in Rajasthan, and the scale of energy infrastructure India must build by 2047 are all telling us the same thing: renewables are necessary but not sufficient. India needs firm, clean, fuel-secure baseload — without the waste burden of fission, without the import dependency of fossil fuels, and without the storage mineral constraints of battery-backed renewables.
The centenary of India’s independence in 2047 should be powered by electricity that is clean, affordable, reliable, and domestically produced. The 2016 mandate called for exactly this. The global private sector is now structuring commercial agreements around it.
Achieving that future for India requires starting the fusion programme seriously — not as a research curiosity, but as a national strategic priority — in 2026. Not 2036. Not when the technology is ‘ready.’ Now. So that Viksit Bharat is truly energy sovereign by 2047.
ASPL Fusion: India’s Fusion Industrial Base
From neutron devices at Gandhinagar to a fusion-fission hybrid — building the technology staircase for energy sovereignty by 2047.
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