Why US nod for building nuclear reactors in India is BIG deal

In a major breakthrough, the US Department of Energy (DoE) has given the go-ahead to an American company, Holtec International, to design and build nuclear reactors in India. This decision, taken on March 26 this year, marks a big step forward for the Indo-US civil nuclear deal, which was signed 20 years ago, but had not fully taken off until now. 

According to an The Indian Express report, Holtec can now share its small modular reactor (SMR) technology with three Indian companies: Holtec Asia, Tata Consulting Engineers Limited and Larsen & Toubro Limited. This approval comes under a strict US law called the '10CFR810' regulation, which is part of the Atomic Energy Act. 

Holtec, started by Indian-American Kris P Singh, already has a manufacturing facility in Dahej, Gujarat, and an engineering office in Pune since 2010. The company had also asked to work with some Indian government-owned organizations, such as the Nuclear Power Corporation of India Limited (NPCIL) and NTPC Limited, but India could not provide the required assurances -- which last 10 years with check-ins every five years -- to prevent misuse of the technology. Still, Holtec may try again later to include these groups.

The Indian government promised on March 3 this year that the technology would be used only for peaceful purposes, such as generating electricity, and not for weapons. This promise aligns with rules set by the International Atomic Energy Agency (IAEA). Holtec will need to send regular updates to the Department of Energy (DoE) about how the technology is being shared.

This is a big deal because, until now, tough US rules had stopped American companies from making nuclear equipment or doing design work in India. Small modular reactors (SMRs) are a hot topic in the energy world. They are smaller, easier to build and could help such countries as India to meet their power needs with cleaner energy. This move builds on the Indo-US 123 Civil Nuclear Agreement from 2007, which aimed to boost nuclear energy ties but had been slow to deliver results.

For India, this could mean a major upgrade to its nuclear industry. The country has used mostly older heavy water reactors, but SMRs could bring it up to speed with modern trends. Holtec is even ready to hire more workers at its Gujarat plant if manufacturing ramps up, which could boost jobs and growth in the region.

However, there are still hurdles. India's Civil Liability for Nuclear Damage Act from 2010 makes foreign companies nervous about investing because it holds them responsible for accidents. Besides, Indian laws need changes to let private companies generate nuclear power -- something the government says it is working on.

Holtec's SMR-300 design is already being developed for use in such places as the UK and Canada and it is one of seven advanced reactor ideas backed by the US DoE. This step could help India meet its rising energy demands while joining the global push for cleaner power sources. It is a win-win situation for both nations and a sign of stronger ties in the nuclear energy field.

What are small modular reactors?

Imagine a nuclear power plant that is small enough to fit in a fraction of the space of a traditional one, built in a factory and shipped to where it is needed. In that sense, it is like a high-tech Lego set for clean energy. That is what SMRs are all about. These compact nuclear reactors are designed to produce electricity in a safer, more flexible and, often, cheaper manner than the giant plants of old.

Unlike the massive nuclear facilities that can power entire cities, SMRs generate smaller amounts of electricity (up to about 300 megawatts) -- typically enough for a town or a large factory. They are 'modular', meaning they can be made in pieces at a factory and, then, assembled on-site. This cuts construction time and costs. 

Besides, they come with such advanced safety features as systems that shut down automatically if something goes wrong, making them less risky than those built on older designs. They are smaller, smarter and built for today’s needs.

SMRs vs older heavy water reactors

Heavy water reactors of old are like the bulky desktop computers of the past—reliable in those times, but big, complex and not very adaptable.

* Size and setup: Heavy water reactors are huge and manufactured entirely on-site, taking years and billions of dollars to build. They use a special kind of water (called ‘heavy water’) to keep the nuclear reaction going, which makes them unique, but also expensive to maintain. SMRs, on the other hand, are tiny by comparison—some small enough to fit in the back of a truck—and their factory-made parts make them quicker to set up.

* Fuel & Efficiency: Older heavy water reactors often use natural uranium as fuel, which does not need much processing, but produces less energy per ton compared to modern options. SMRs typically use enriched uranium, which packs more power into a smaller space and can run longer before needing a refill. This makes SMRs more efficient for their size.

* The Safety Aspect: Heavy water reactors were designed decades ago. So, while they are safe by past standards, they do not have the latest tech. If something fails, they often rely on human operators, or backup systems to be back in action. SMRs are built with ‘passive safety’. If there is a problem, they can cool down, or shut off on their own without any human intervention. It is something akin to the difference between an old car with manual brakes and a new one with automatic emergency stopping.

* Flexibility Issues: Heavy water reactors are stuck where they are built, pumping out power for large grids. SMRs can be placed almost anywhere -- remote towns, industrial sites, or even disaster zones -- because they are small and portable. More units, such as stacking blocks, can be added as needed, while heavy water reactors are all-or-nothing giants.

* Cost and Time: Building a heavy water reactor is a marathon—it takes a decade or more and a pile of money. SMRs are more like a sprint. They can be ready in a few years and cost less upfront because of their factory-made design.

Why small modular reactors matter

Heavy water reactors have served such countries as India well, providing steady power for decades. But, as energy demand grows and the world pushes for cleaner options, they are starting to get outdated. SMRs offer a fresh start -- smaller, safer and ready to fit into a future where flexibility and sustainability are key. It is like swapping a steam locomotive for an electric train. 

Both will get you there, but one is built for a new era. With SMRs, such nations as India could power up faster, cheaper and greener, leaving the heavy old giants as a proud part of history.

What exactly was the 123 agreement?

The Indo-US civilian nuclear agreement, commonly referred to as the '123 Agreement', marked a major step in strengthening strategic ties between India and the US. The name, '123 Agreement' comes from Section 123 of the US Atomic Energy Act of 1954, which outlines the legal framework under which the US can engage in nuclear cooperation with other countries.

The primary aim of the agreement was to allow full civilian nuclear cooperation between the two nations. It opened the doors for US companies to build nuclear reactors in India and facilitated the supply of nuclear fuel and technology for peaceful, civilian purposes.

As part of the deal, India agreed to separate its civilian and military nuclear programmes, placing its civilian facilities under the supervision of the International Atomic Energy Agency (IAEA). This step was crucial in gaining international acceptance since India had faced decades of nuclear isolation since conducting its first nuclear test in 1974.

The agreement took several years to negotiate and was formally signed into law in October 2008. On October 10 that same year, the final signing took place, with Pranab Mukherjee, then India's External Affairs Minister, and Condoleezza Rice, then US Secretary of State, representing their respective governments. While the final signatures came from the foreign ministers, the broader vision and framework of the agreement were established earlier through discussions between Prime Minister Manmohan Singh and President George W Bush.

The author of this article is a defence, aerospace & political analyst based in Bengaluru.