Will Regan

Will Regan, Ph.D., is the co-founder and Chief Scientist of Pacific Fusion, a Fremont, California-based startup founded in 2023 to deliver on-demand clean energy through pulser-driven inertial fusion. Pacific Fusion uses fast-rising high-current pulses to magnetically compress deuterium-tritium fuel targets, aiming for net facility gain (more fusion energy out than electricity in) on their Demonstration System by 2030. A UC Berkeley alumnus who previously co-developed ARPA-E's ALPHA program, Regan later led energy and climate projects at Google X — including founding Alphabet's Mineral agricultural tech division. He helped build a team of national lab veterans and hardtech industry leaders to prototype systems and raised a $1B+ milestone-based Series A from General Catalyst and others. A congressional witness on fusion's promise for U.S. energy leadership, communicator on podcasts and technical papers, and advocate for pragmatic paths to TW-scale power, Regan is driving a roadmap toward pilot plants in the 2030s to meet demand from AI, electrification, and global prosperity.