Located in what's been referred to as the "renewable energy capital of the world", IID serves as a catalyst for renewable energy development in the Imperial Valley and is going to great lengths to enhance its energy infrastructure to be able to move renewable energy generated in the Imperial Valley to markets far and wide. The Energy Department has an aggressive transmission expansion plan and, over the next five years, intends to invest $1 billion in its energy infrastructure, which includes building a state-of-the-art energy battery storage unit in El Centro, which would provide back-up energy resources but also help the IID grid integrate the many megawatts of solar energy entering the IID grid during the day.