Cooley advised Helion Energy, a clean energy company committed to creating a new era of plentiful, zero-carbon electricity from fusion, on its $500 million Series E financing round, which also includes an opportunity for an additional $1.7 billion tied to Helion reaching key performance milestones. Lawyers Sonya Erickson, Colleen Badgley, Ashley Brown, Justine Chiu and Jasjit Grewal led the Cooley team advising Helion.