TAE Technologies closed a $250 million Series G this week, led by a consortium of Gulf and Asian sovereign-wealth investors with continued participation from existing backers including Chevron Technology Ventures, Google, and the Wellcome Trust. The round brings cumulative private funding to roughly $1.45 billion.

Proceeds will fund construction of Copernicus, the company's next-generation field-reversed configuration device, designed to achieve sustained plasma temperatures above 150 million °C with a hydrogen-boron-11 fuel cycle as its eventual target. TAE has favored p–B11 throughout its 26-year history for its absence of high-energy neutron flux.

TAE has favored p–B11 throughout its 26-year history for its absence of high-energy neutron flux.

The Series G is the largest single private fusion round of 2026 to date, narrowly exceeding Pacific Fusion's $900 million Series A in absolute commitments to capacity expansion.