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A Second Big Boost for Modular Nuclear Reactors

NuScale Power to receive up to $226 million from U.S. Energy Department

2 min read
A Second Big Boost for Modular Nuclear Reactors
Illustration: NuScale

Illustration: NuScale
NuScale’s modular reactor can self-cool indefinitely in the event of an outage.

It's long been recognized that nuclear energy will achieve its full potential only if much smaller, inherently safer reactors are developed, so as to be an attractive option in a much wider range of situations. A variety of interesting concepts for compact modular reactors have emerged in the last decade, and now some of them are starting to attract real money. This week, the U.S. Department of Energy announced it would award one such developer, NuScale Power of Corvallis, Oregon, up to US $226 million to support design work.

This was the second such DOE grant. Last November, the Energy Department made its first grant of its $452 million modular reactor program to Babcock & Wilcox, to support its mPower concept. The mPower project is considered to be “a step ahead of NuScale’s because it has a preliminary agreement with a customer, the Tennessee Valley Authority,” according to Matthew Wald of the New York Times.

In the NuScale concept, as described in Spectrum’s round-up on modular reactors two year ago, “the nuclear fuel assemblies sit inside a long core vessel, which in turn is housed in a secondary containment vessel immersed in water. Unlike conventional light-water reactors, which require large pumps to circulate water through the core, the NuScale reactor is based on convection.”

The United States, having given birth to a handful of innovative ideas for small reactors, seems to be well ahead of the rest of the world in this particular technology. But it does not have the field all to itself. Russia's reactor company has developed a small floating nuclear power plant, which appears to be on the threshold of commercial application, most likely in offshore oilfield settings, initially.

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This photograph shows a car with the words “We Drive Solar” on the door, connected to a charging station. A windmill can be seen in the background.

The Dutch city of Utrecht is embracing vehicle-to-grid technology, an example of which is shown here—an EV connected to a bidirectional charger. The historic Rijn en Zon windmill provides a fitting background for this scene.

We Drive Solar

Hundreds of charging stations for electric vehicles dot Utrecht’s urban landscape in the Netherlands like little electric mushrooms. Unlike those you may have grown accustomed to seeing, many of these stations don’t just charge electric cars—they can also send power from vehicle batteries to the local utility grid for use by homes and businesses.

Debates over the feasibility and value of such vehicle-to-grid technology go back decades. Those arguments are not yet settled. But big automakers like Volkswagen, Nissan, and Hyundai have moved to produce the kinds of cars that can use such bidirectional chargers—alongside similar vehicle-to-home technology, whereby your car can power your house, say, during a blackout, as promoted by Ford with its new F-150 Lightning. Given the rapid uptake of electric vehicles, many people are thinking hard about how to make the best use of all that rolling battery power.

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