National Grid Ventures has agreed to invest $1.75 billion to secure a 35% interest in Joulent LLC, a platform focused on developing integrated power solutions for US large load customers. The investment will support the development of Project Kilby, a 2.67 GW co-located power facility in West Texas in partnership with Chevron Corporation. National Grid operates in the energy infrastructure sector, providing transmission, battery storage, solar, and conventional generation assets.