Optimizing Look-Ahead Generation Scheduling: Challenges, Methods, and Insights From South Korea

As the energy sector transitions toward decarbonization, the integration of variable renewable energy (VRE) sources presents challenges in grid reliability, operational flexibility, and cost optimization. This article explores the practical approaches and advanced optimization methods for look-ahead coordinated generation scheduling in grids with a high share of VREs. Using Republic of Korea as a case study, we discuss the implementation of real-time markets, renewable energy bidding systems, and bulk energy storage solutions to mitigate the intermittency of renewables and ensure secure power system operation. Emphasis is placed on the role of accurate forecasting, coordinated operation of dispatchable and nondispatchable resources, and the use of enabling technologies to achieve a sustainable and robust power grid. The findings offer actionable insights into addressing the technical and economic challenges of transitioning to a low-carbon energy system.