Third Derivative (D3)

Third Derivative (D3) is a climate tech accelerator and venture fund launched by Rocky Mountain Institute (RMI) and New Energy Nexus. Founded in 2020, D3 focuses on finding, funding, and scaling startups that are tackling global climate challenges. It integrates a vast network of investors, corporate partners, and mentors to support its portfolio of over 100 companies across key sectors like renewable energy, sustainable materials, and carbon capture. Notable investments include companies like Summit Nanotech, which develops innovative lithium extraction technology, and Mission Zero Technologies, focused on direct air capture of CO2. D3's accelerator model offers startups not just funding but also unparalleled access to corporate partners like Microsoft, Shell, and bp, as well as investors like Fifth Wall and Prelude Ventures. This ecosystem accelerates the commercialization of new climate solutions globally. D3 typically invests at the seed stage, providing startups with both capital and strategic partnerships to help them scale rapidly. Their mission is to reduce global carbon emissions by advancing hard science, digital solutions, and business model innovations that can disrupt traditional industries​.