Investors: Gigafund
Last Energy, a small modular reactor developer, raised $40 million to mass-manufacture 20MW nuclear reactors that can be built and shipped within 24 months.
Small modular reactor company raised Series C funding in December 2025 to build four 20-megawatt reactors in Wales.
Investors: Astera Institute, JAM Fund, Gigafund, The Haskell Company, AE Ventures, Ultranative, Galaxy Interactive, Woori Technology Co., Ltd.
Last Energy closed an oversubscribed Series C funding round to support its PWR-20 advanced small modular reactor development.