Radiant Lands $300M at $1.8B Valuation to Scale Portable Nuclear Reactors

Radiant Industries, a California-based nuclear technology startup, has raised more than $300M in its latest funding round as it moves to commercialise a new generation of small, portable nuclear reactors. The Series D round was led by Draper Associates and Boost VC and values Radiant at over $1.8B.

Founded with the aim of developing compact reactors that can be manufactured at scale, Radiant is working on a transportable nuclear system designed to provide reliable, zero-carbon power in locations where conventional infrastructure is limited or unreliable. The company’s design targets uses ranging from remote industrial sites and military bases to disaster response and critical infrastructure backup.

Radiant says the new capital will be used to accelerate manufacturing, advance regulatory work and support preparations for deployment. Unlike traditional nuclear plants, which are large, site-specific and costly to build, Radiant’s reactors are intended to be factory-produced and shipped as complete units, a model the company argues could shorten deployment timelines and reduce costs.

The funding comes amid renewed interest in nuclear energy, driven by rising electricity demand from data centres, electrification and artificial intelligence workloads, alongside pressure to cut emissions. Small and advanced reactors have attracted growing attention from investors and policymakers as a potential complement to renewables, offering constant power without direct carbon output.

Radiant has positioned itself within this trend by focusing on simplicity and portability, rather than large grid-scale projects. While the company still faces the technical, regulatory and safety hurdles common to nuclear ventures, the size of the latest round underlines investor confidence in its approach and in the broader role of nuclear power in meeting future energy needs.

Sources:
Radiant Industries
Bloomberg
MarketScreener
Access Newswire
Morningstar

J.V.