Kavya Wadhwa

Nuclear, National Security & Policies | Bylines in @FinancialTimes @orfonline @IDSAIndia @the_hindu @FinancialXpress @ttindia

[Kavya Wadhwa @Kavya134]

My oped in today’s @the_hindu argues that India’s EV transition cannot succeed without a matching electricity-grid strategy. ⚡⚛️

Much of the public conversation around EVs focuses on scooters and passenger vehicles, but the deeper challenge lies in power infrastructure. Large-scale transport electrification, especially freight, logistics corridors, and depot charging, could add hundreds of TWh of electricity demand over time and fundamentally reshape India’s power system.

The piece examines why EV adoption is ultimately not just a mobility transition, but also a generation, transmission, and distribution challenge.

A key argument I make is that renewable energy alone cannot reliably support this scale of electrification without firm clean power backing the grid. That is where nuclear energy, including future SMR deployment near demand centres, becomes strategically important.

The central point: India’s EV future will depend as much on building a resilient clean electricity system as on manufacturing vehicles themselves.

[Kavya Wadhwa @Kavya134]

Published in today’s @EconomicTimes

As India navigates the dual imperatives of economic growth and decarbonisation, the energy debate must move beyond simplistic cost comparisons. The real question is whether our energy systems can deliver reliability, resilience, industrial competitiveness and long-term energy security at scale.

My latest editorial examines why India needs the right energy, at the right place, at the right time.

#EnergyPolicy #India #EnergySecurity #EnergyTransition

[Nick Touran @whatisnuclear]

What does "going critical" mean? If you shoot a neutron into some uranium ore, some atoms will split by fission, but you haven't made a nuclear reactor. Too many secondary neutrons leak out or get absorbed without splitting neighboring atoms. You have to put fuel atoms close together (spatially and often with enrichment), remove impurities that gobble neutrons, and often include a special neutron moderator material that substantially improves the neutron economy.

Once you do enough of this, you can remove your neutron source and the reactor will keep on splitting atoms in steady state. Huge congrats: it's now critical!

You can run a reactor in a near-zero or low-power critical state, with just a few billion fissions occurring per second, or you can pull the control rods for longer, go supercritical for a while, get the reaction rate way up, and then insert the rods again to go back to a higher-power critical steady state.

Low-power critical is a huge milestone, especially after decades of institutional morass.

High-power critical is harder because you're splitting atoms faster. You must endure proportionally higher radiation fields, substantial thermal gradients, and you generate more radioactive byproducts, so the safety and decommissioning issues increase.

Of course, high-power critical for long periods of time is the hardest of all for these reasons. Powering a city of 1 million people requires splitting of about 100 quintillion atoms per second (100 billion billion).

I'm absolutely thrilled that multiple new reactors will be going low and high power critical in the coming ~month.

[Kavya Wadhwa @Kavya134]

Honoured that my work has been cited in the Nuclear Security Briefing Book published by King’s College London. I am grateful to see this research contribute to important discussions on nuclear security and policy.

https://t.co/BgyWfPkXuH

[Kavya Wadhwa @Kavya134]

https://t.co/zjw1fsYi5K

[Kavya Wadhwa @Kavya134]

1 Heavy Goods Vehicle = Emissions & Energy Footprint of 25 Passenger Cars.

That single statistic explains why India’s EV transition is not really about cars.
It is about freight.

Most public conversations around electrification focus on passenger EV adoption.

But the real pressure on India’s future power system will come from supply chains, logistics hubs, and heavy transport.

Electrifying India’s Heavy Goods Vehicle fleet alone could require 450–565 TWh of electricity annually, several times the projected demand from hundreds of millions of electric two-wheelers.

When policymakers speak about electrifying roads, they are actually speaking about electrifying India’s industrial backbone.

And that changes everything.
Because EV adoption at this scale is no longer only an automotive challenge.
It becomes:
⚡ A grid challenge
⚡ A distribution challenge
⚡ A baseload power challenge
⚡ A storage challenge
⚡ A national infrastructure challenge
Without serious investment in grid readiness, smart charging, freight corridor planning, and clean firm power, electrification risks replacing oil dependence with coal dependence.

India’s EV future will not be decided only by how many vehicles we manufacture.

It will be decided by whether the grid can sustain industrial-scale electrification.
My recent article explores why electrifying transport ultimately means electrifying supply chains — and why India now needs a grid strategy to match its EV ambition, link : https://t.co/zg2aWf2Vrq

[Dwarkesh Patel @dwarkesh_sp]

New blackboard lecture w @reinerpope

How do chips actually work – starting with basic logic gates, and working up to why GPUs, TPUs, FPGAs, and the human brain each look the way they do.

0:00:00 – Building a multiply-accumulate from logic gates
0:16:20 – Muxes and the cost of data movement
0:25:59 – How systolic arrays work
0:39:00 – Clock cycles and pipeline registers
0:51:40 – FPGAs vs ASICs
1:03:14 – Cache vs scratchpad
1:07:16 – Why CPU cores are much bigger than GPU cores
1:11:49 – Brains vs chips
1:15:22 – A GPU is just a bunch of tiny TPUs

Look up Dwarkesh Podcast on YouTube/Spotify/etc to watch. Enjoy!

[Kavya Wadhwa @Kavya134]

@catale7a FAKE NEWS ALERT ‼️

[Kavya Wadhwa @Kavya134]

@SupriyaShrinate It’s not a data centre specific problem, it’s a construction specific problem, in India when you drill a tubewell the ground water turns muddy sometimes, doesn’t mean you stop drilling tubewell.

[Kavya Wadhwa @Kavya134]

The muddy (brown/turbid) water reported by residents in Morgan County, GA, near Meta's Stanton Springs data center appears to be primarily suspended sediment, dirt and silt stirred up in their private wells.

Residents link it to the data center construction (blasting, land clearing, earth disturbance) starting around 2018, which they say caused sediment to enter the groundwater, reduced water pressure, and damaged appliances. They now often use bottled water.

Meta says an independent groundwater study found **no impact** from their construction or operations on local wells/residents' water. They source all water from the local utility (not groundwater).

No public water tests in recent coverage mention chemical toxins or specific contaminants beyond sediment/silt. The EPA has pledged to investigate after AOC's hearing.

Construction sites commonly cause temporary sediment issues if erosion controls aren't perfect; correlation is claimed but causation is disputed.

[Kavya Wadhwa @Kavya134]

@grok @Acyn So even if there was any other construction than data centre the contamination would have been same as it’s construction problem than a DC problem.

[Matt Loszak @MattLoszak]

In the 1970s, nuclear was cheaper than coal.

It was the cheapest, cleanest energy source on earth.

Why didn't we just keep building more of it? 🧵

[Kavya Wadhwa @Kavya134]

Electric vehicles face significant existing bottlenecks in India’s power sector. Without addressing them, the EV transition risks becoming little more than a temporary shift in energy dependence rather than a genuine solution.
If incremental terawatt-hours come mainly from coal, India merely replaces oil dependence with coal dependence, importing from Australia and Indonesia instead of the Gulf, without emissions gains. The logic of electrification breaks if the grid is not cleaner
than the fuel it replaces.

[Antony Stanley @antonystanley09]

The real challenge of India’s EV transition ⚡🚛 isn’t selling electric vehicles — it’s building a power grid 🔌 capable of handling large-scale freight movement 🚚⚙️.

The numbers are staggering! Full electrification of India’s 420M vehicles would require an additional 900 to 1,100 TWh of electricity per year. Even a moderate 50% fleet conversion by 2047 demands 500 TWh—equivalent to nearly a third of India’s current total generation.

Despite their high visibility and political focus, 309 million electric two-wheelers would consume just 55–75 TWh. That is less than 7% of total projected EV demand. In short, the political visibility of scooters is inversely proportional to their actual grid impact. 🛵

The heavy lifting belongs to heavy goods vehicles (HGVs). One HGV emits as much as 25 cars. Electrifying India’s 6.26 million HGVs alone requires up to 565 TWh annually. When policymakers talk about "electrifying roads," they are really talking about supply chains. 🚛

Grids are stressed by instantaneous demand, not annual averages. Unmanaged evening charging could add several hundred gigawatts of peak load, risking grid instability and tariff spikes. To prevent this, smart charging capabilities must be mandated for all new chargers now.

We also cannot simply swap oil dependence for coal dependence by importing coal from Australia or Indonesia to power EVs. For a truly clean transition, India needs a diversified energy mix: solar/wind, battery storage, and even micro modular nuclear reactors for highway corridors.

The transition is inevitable; the grid must be made ready.

[The Hindu Comment @TheHinduComment]

#Comment | India’s EV future depends on a strong and clean energy electricity grid
✍️Kavya Wadhwa
https://t.co/YEYosbAKeL

[shouko @shoukointech]

Naval Ravikant: The one word that caues every tech revolution.

[Kavya Wadhwa @Kavya134]

Highly insightful podcast @VaadClips x @anil_kakodkar

https://t.co/bxBtJ0gwGa

[pH @pHequals7]

https://t.co/noKIgZK9aG

[Kavya Wadhwa @Kavya134]

@ShivAroor @Spotify It almost felt like app was undergoing auto update and then realised they messed up😭