Commonwealth Fusion Systems has applied to tie its planned Virginia fusion plant onto the eastern grid PJM Interconnection . This marks the first time a fusion company has sought a U.S. grid connection, signaling a milestone for commercial fusion deployment in the United States. The move comes amid growing interest in fusion as a clean energy source. By securing a grid connection, the company aims to demonstrate the feasibility of integrating fusion power into the existing electric system. The application specifically targets the PJM Interconnection, the largest regional transmission organization in the U.S., which serves the eastern United States. Looking ahead, a successful connection could pave the way for future fusion projects to feed power into the grid, potentially expanding the U.S. energy mix and supporting the transition to low‑carbon electricity.