Inertia announced today that it has raised a $450 million Series A round. This is Inertia's first publicly disclosed investment round.
The Series A investment round was led by Bessemer Venture Partners and includes Threshold Ventures, Long Journey Ventures, and GV (formerly Google Ventures).
Inertia is pursuing a laser indirect drive fusion energy concept. They plan to develop a 10 megajoule (MJ) diode-pumped, solid state laser driving an indirect drive target containing deuterium-tritium (DT) fuel. Inertia’s envisioned power plant will use 1,000 of these lasers, firing 10 times a second.
Rendering of Inertia’s fusion technology. Source: Inertia
Inertia expects to begin construction of their pilot plant in 2030. Alongside the power plant, Inertia is planning to build a production facility to make the lasers and production lines to supply millions of fuel pellets that are needed for their envisioned concept.
Inertia is based in Livermore, California, which is home to the Lawrence Livermore National Laboratory that achieved ignition at NIF in 2022.
This is one of the largest investment rounds of 2026 so far and continues the momentum of fusion company investments in recent years.
The Commercial Fusion Newsletter is being merged into the Fusion Energy Base platform. All Commercial Fusion articles will now be posted directly to the Fusion Energy Base website.
To continue reading about Commercial Fusion, please sign up for the Fusion Energy Base newsletter here.