Last Energy Raises $100 Million to Develop Small Nuclear Reactor for AI Energy Demand

Last Energy, a nuclear energy startup based in Austin, has successfully raised $100 million in a new funding round to accelerate the development and commercialization of a small nuclear reactor. This initiative comes at a time when the energy sector is witnessing growing demand fueled by the rapid expansion of artificial intelligence applications, according to a report by Bloomberg.

The Series C funding round, which exceeded expectations, was led by Astera Institute, with participation from investors including Galaxy Interactive, Gigafund, and Woori Technology.

Last Energy is developing a 20-megawatt small nuclear reactor, focusing on reducing production costs by utilizing commercially available components in some core parts. This project is part of a growing wave of companies developing next-generation nuclear systems to meet the accelerating electricity consumption, particularly from data centers and energy-intensive applications.

The company noted that the new funding significantly exceeds its requirement of $35 million to complete a smaller version of the reactor with a capacity of 5 megawatts, which it plans to implement under a pilot program for the U.S. Department of Energy.

CEO Brett Kugelmass stated that this funding fully covers the pilot project and paves the way for a swift transition to commercial production of power plants, reflecting the increasing global interest in small nuclear solutions as a sustainable energy source.