About this Training Course
Transmission Expansion Planning (TEP) is a critical strategic process that determines how power networks evolve to meet future electricity demand while maintaining reliability, affordability, and sustainability. Traditionally, TEP focused on identifying the optimal timing and location of new transmission infrastructure to support economic growth and secure system operations. Today, however, the energy sector is undergoing unprecedented transformation driven by rapid renewable energy deployment, electrification of transport and industry, growing demand from data centres, decarbonisation commitments, and increasing regional power system interconnections.
These developments have fundamentally changed the nature of transmission planning. Decision-makers must now balance multiple and often competing objectives, including reliability, resilience, cost efficiency, environmental performance, social acceptance, and long-term investment risk. At the same time, planners face increasing uncertainty regarding future demand growth, technology adoption, market evolution, regulatory requirements, and climate-related impacts.
This intensive 3-day programme provides a strategic framework for evaluating, prioritising, and justifying transmission expansion investments in an increasingly complex energy landscape. Participants will learn how to assess future system needs, compare alternative expansion pathways, integrate renewable energy and energy storage solutions, evaluate ageing infrastructure strategies, and apply economic and financial analysis to support investment decisions. Through practical case studies and real-world examples, participants will explore how leading utilities, system operators, regulators, and investors make transmission planning decisions under uncertainty.
1. What is Transmission Expansion Planning (TEP)?
Transmission Expansion Planning (TEP) is the process of planning new power lines and grid upgrades. It helps electricity networks meet future demand while keeping power reliable and affordable. In addition, TEP supports renewable energy growth and long-term energy goals.
2. Why is transmission expansion important for the energy transition?
The energy transition is increasing the use of solar power, wind power, energy storage, and electric vehicles. As a result, power networks face new demands. Transmission expansion helps move electricity from where it is generated to where it is needed. Furthermore, it reduces congestion and improves grid reliability.
3. How do planners identify the need for new transmission infrastructure?
Planners study electricity demand, grid performance, and future growth forecasts. They also assess network bottlenecks, congestion points, and reliability risks. Based on these findings, they can decide whether to build new lines, upgrade existing assets, or use alternatives such as energy storage.
4. How does renewable energy affect transmission planning?
Solar and wind projects are often located far from major demand centers. Therefore, additional transmission capacity may be required. At the same time, planners must manage changing generation output and maintain system stability. Consequently, renewable energy has become a major driver of transmission investment.
5. Can battery energy storage replace transmission expansion?
Battery Energy Storage Systems (BESS) can help reduce congestion and improve grid flexibility. For example, storage can defer certain transmission upgrades. However, it cannot replace every network investment. Instead, many utilities combine transmission, storage, and demand response to achieve better results.
6. How are transmission expansion projects evaluated financially?
Utilities use financial tools such as Net Present Value (NPV), Internal Rate of Return (IRR), and scenario analysis. These methods help compare project costs, benefits, and risks. As a result, decision-makers can prioritize investments that deliver long-term value while supporting future grid needs.