Twilio co-founder’s fusion power startup raises $450M from Bessemer and Alphabet’s GV

Core Insights - Inertia Enterprises has successfully raised $450 million to develop a powerful laser system intended for a grid-scale fusion power plant, with construction planned to begin in 2030 [2] - The technology being utilized is based on advancements from the Lawrence Livermore National Laboratory's National Ignition Facility, which has achieved controlled fusion reactions that reach scientific breakeven [3] Funding and Leadership - The Series A funding round was led by Bessemer Venture Partners, with participation from GV, Modern Capital, Threshold Ventures, among others [4] - Key co-founders include Jeff Lawson, Annie Kircher, and Mike Dunne, with Kircher continuing her role at Lawrence Livermore [4] Technological Development - Inertia's reactor employs inertial confinement fusion, where lasers compress fuel targets to initiate fusion, utilizing designs from the NIF [6] - Each power plant will require 1,000 lasers targeting 4.5 mm fuel targets, which are cost-effective to mass produce, contrasting with NIF's more complex and expensive system [7] Industry Trends - The recent funding round is part of a broader trend, with fusion startups collectively attracting over $10 billion in investments, and multiple companies raising significant amounts [8] - Other notable funding activities include Avalanche's $29 million for a desktop-sized fusion reactor and Type One Energy's $87 million investment [9] Market Movements - Two fusion companies, General Fusion and TAE Technologies, have announced plans to go public through reverse mergers, with valuations of $1 billion and $6 billion respectively [10]