The two volume set LNCS 16931 + 16932 constitutes the proceedings of the Second Nordic Energy Informatics Academy Conference, Nordic EIA 2026, which took place in Reykjavik, Iceland, during September 2026. 

The 43 full papers and 14 short papers presented in the proceedings were carefully reviewed and selected from 106 submissions. They were organised in the following topical sections: 

Part I : Reinforcement Learning and Real-Time Optimization for Grid Control; Explainable, Agentic and LLM-Based AI for Energy Systems; Optimization of Microgrids, Energy Communities and Market Participation; Smart Metering Analytics and Load Disaggregation; District Heating Digitalization: Simulation, Monitoring and Fault Detection.

Part II : Modeling and AI for Renewable Generation, Conversion and Harvesting; Building Energy Informatics, Digital Twins and Operational Analytics; Data-Driven Electric Mobility and Charging Infrastructure; Sustainable AI, Data-Driven Methods and Energy Informatics Frameworks; Forecasting and Predictive Analytics for Energy Demand and Prices.