The Social Radars David Kirtley, Founder & CEO of Helion Energy
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Jan 7, 2026 
David Kirtley, Founder and CEO of Helion Energy, is pioneering a fusion power plant that could revolutionize clean energy. He explains the science behind fusion, including its dramatic temperature and pressure requirements, and why it's safer than fission. Kirtley shares his entrepreneurial journey, how modern tech accelerates fusion development, and the implications of successful large-scale deployment. He also reveals insights into fundraising strategies and balancing innovation with personal life, all while addressing the exciting future of fusion energy.
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Polaris Is Running And Being Optimized
- Polaris, Helion's seventh-generation machine, began making plasmas and later ramped to full power this year.
- The team now focuses on optimization: raising produced power and improving efficiency.
Efficiency Beats Extreme Yield For Electricity
- Helion optimizes overall electrical efficiency rather than chasing huge fusion yield.
- They recover ~96% of input electricity before fusion, so fusion only needs to add a modest net gain.
Plan For Imperfect Execution
- Build engineering and manufacturing capacity with slack to handle expected shortfalls and iterate quickly.
- Design knobs and redundancies so you can tweak performance when reality deviates from models.