Inertia Enterprises has successfully secured $450 million in funding to develop one of the most advanced laser systems globally. This initiative aims to lay the groundwork for a grid-scale power plant, with construction expected to commence in 2030.
The company is leveraging technology pioneered at the National Ignition Facility (NIF) of the Lawrence Livermore National Laboratory, which is renowned for being the only site where controlled fusion reactions have achieved scientific breakeven--where the energy output surpasses the energy input.
This Series A funding round was spearheaded by Bessemer Venture Partners, with contributions from GV, Modern Capital, Threshold Ventures, and other investors. Inertia's founding team includes notable figures such as Jeff Lawson, co-founder of Twilio, Annie Kircher, who led successful experiments at NIF, and Mike Dunne, a Stanford professor instrumental in developing a power plant design based on NIF technology. Kircher continues her role at Lawrence Livermore.
The breakeven experiments at NIF represent significant milestones towards achieving widespread fusion energy. However, substantial advancements are still required before a fusion power plant can contribute electricity to the grid. For Inertia, this involves constructing a laser capable of delivering 10 kilojoules ten times each second.
Inertia's reactor operates on a fusion method known as inertial confinement. In this approach, lasers target a fuel pellet, compressing it until the atoms fuse and release energy. This technique mirrors NIF's designs, where laser energy is transformed into X-rays that heat and compress the fuel pellet.
Each of Inertia's planned power plants will utilize 1,000 lasers to strike targets measuring 4.5 mm, which can be mass-produced for under $1 each. In contrast, NIF employs 192 lasers to fire at meticulously crafted targets that require extensive time to produce. Inertia aims to significantly reduce costs by applying a more commercial strategy while adhering to the fundamental principles established by NIF.
This funding round is part of a broader trend, as fusion startups have collectively raised over $10 billion in recent months. At least a dozen companies have successfully secured more than $100 million in investments.
