Energy Systems Integration Group
The Energy Systems Integration Group (ESIG), previously known as the Utility Wind Integration Group (UWIG), was established in 1989 to provide a forum for the critical analysis of wind for utility applications. Initially focused on wind power, UWIG expanded its focus to include solar power and distributed generation and become known as the Utility Variable-Generation Integration Group in 2011. In 2018, driven by the economics and growth of renewable energy and the interdependent nature of the global energy industry, the association expanded its focus beyond the electricity system of today. These expanding perspectives around energy, and the growing need for coordination across the ways that we produce, convert, deliver and use energy, are the reasons we have become the Energy Systems Integration Group (ESIG).
Webinar: New Frontiers IBR and Data Center Modeling Requirements, Practices, and Experience
November i2X FIRST Meeting
2025 Fall Tech Workshop: Closing Plenary: Fireside Chat Session on the Future of Demand Flexibility
2025 Fall Tech Workshop: Session 7B: Technical Challenges & Solutions w/ Integration of Large Loads
2025 Fall Technical Workshop: Session 7A: Fireside Chat: Collaborative Approaches to Planning
2025 Fall Technical Workshop: Session 6B: Importance of In-The-Loop Testing for Model Validation
2025 Fall Technical Workshop: Session 6A: Finance & Investment (Part 2)
2025 Fall Technical Workshop: Session 6A: Finance & Investment (Part 1)
2025 Fall Technical Workshop: Session 5B: GFM Project Examples
2025 Fall Technical Workshop: Session 5A: Flexibility Solutions in Distribution Systems
2025 Fall Technical Workshop: Session 4B: Integrated Planning with DERs
2025 Fall Technical Workshop: Session 4A: Capacity Accreditation
2025 Fall Technical Workshop: Session 3A: Resource Adequacy Assessments for Large Geographic Regions
2025 Fall Workshop: Session 2B: Grid Operator Use of AI & Advanced Methods w/in Power System Apps
2025 Fall Technical Workshop: Session 2A: Expediting Transmission Development
2025 Fall Technical Workshop: Session 1B: Managing Increasing Complexity in the Control Room
2025 Fall Technical Workshop: Session 1A: Resources for Firm Capacity Services
2025 Fall Technical Workshop: Opening Plenary Session: Grid Events
2025 Fall Tech Workshop: Tutorial: Power System Needs & Services Operating w/ High Shares of IBRs
2025 Fall Technical Workshop: Introduction/Opening Remarks
Webinar: ESIG Large Loads Task Force: Background Information, Data and Flexibility Needs
Webinar: Flexible Solar Interconnection Demonstration at Avangrid
October i2X FIRST Meeting
Webinar: How to Address Voltage, Stability, & Congestions with The Grid Analysis Suite of MCCS
Webinar: Wide Area Resource Adequacy Assessments Probabilistic Planning for Interconnected Grids
Webinar: Recommended Practices in Practice: Checklists for Benchmarking System Studies...
G-PST/ESIG Webinar: How AI Can Tackle the Increasing Complexity in Power System Operations
September i2X FIRST Meeting