Twilio Founder Jeff Lawson Takes $450M Inertia Fusion Bet to Disrupt 2026
Twilio co-founder Jeff Lawson details Inertia's $450 million fusion push, its 50,000-square-foot Livermore hub and commercial grid plans at Disrupt 2026.
Summary
Jeff Lawson, co-founder of Twilio and CEO and co-founder of Inertia, is applying his software experience to commercial fusion. He helped scale Twilio into a public company with more than $4 billion in revenue and 300,000 customers worldwide, held early product leadership roles at Amazon Web Services and served as StubHub’s founding CTO. In February 2026, Inertia announced a $450 million Series A led by Bessemer Venture Partners, with GV and other investors participating, to develop powerful lasers and mass-manufacture fusion fuel targets needed to move laboratory science toward grid-scale energy.
In July 2026, Inertia opened a 50,000-square-foot headquarters in Livermore, California, for laser technology and fuel-target manufacturing development, and recruited manufacturing and supply-chain leaders from Apple, Corning and Waymo. Lawson will discuss talent, timelines, fundraising and engineering milestones on Disrupt 2026’s Smart Systems Stage, October 13 to 15 at Moscone West in San Francisco. The event expects more than 10,000 founders, investors and technology decision-makers, with over 200 sessions led by more than 250 technology leaders. Passes are discounted by up to $200 until September 25 at 11:59 p.m. PT, while groups of four or more can save up to 30%.
Positives
- Inertia’s $450 million Series A gives its laser and fusion fuel-target programs substantial early funding.
- The 50,000-square-foot Livermore headquarters provides dedicated facilities for laser technology and fuel-target manufacturing development.
- Apple, Corning and Waymo veterans strengthen Inertia’s manufacturing and supply-chain capabilities.
- Lawson brings experience scaling Twilio beyond $4 billion in revenue and 300,000 customers worldwide.
Risks & concerns
- Grid-scale energy still depends on Inertia meeting difficult laser, manufacturing and engineering milestones.
- Fusion development requires major capital before laboratory science can become commercially available electricity.
- Lawson’s software methods may not transfer unchanged to a business governed by physical manufacturing and scientific timelines.
- Inertia must build expertise extending far beyond Lawson’s background while maintaining credible milestones and fundraising momentum.