Transmission Expansion Planning (TEP) Transmission Systems are Large and Interconnected. Transmission Systems carry large quantities of electricity (from utility-scale to low voltage lines – distributed system). Transmission Expansion Planning (TEP) is process of identifying needed investment and expansion in transmission. Transmission Expansion Planning (TEP) is a complex decision-making process. TEP Process include different analysis : System Cost. Reliability and Modeling. Compute Risk and burden. Number of Generators required. The number of Equipment required. How a transmission system should develop over time? Determine the Number of Electric Power Transmission facilities required in the future power grid. Transmission Expansion Planning (TEP): A list of types of equipment can be inserted on the grid: Cables Transformers Transmission Lines Transmission Expansion Planning (TEP) Problem: Objective Functions Investment Function Operational Cost Function Power Loss Function App