At LF Energy Summit 2024 in Brussels, Minh Dupuis of GE Vernova presented a session on “TROLIE – Establishing an Open Conformance Standard for the Exchange of Transmission Facility Ratings.” The presentation highlighted the importance of open and interoperable systems in the energy grid, focusing on the need for a standardized API for exchanging transmission facility ratings in real time. The following is a summary of the session, with the full video available at the end of this post.
Introduction to TROLIE
Dupuis, representing GE Vernova’s Grid Software unit, emphasized the increasing complexity of the grid, driven by the rising penetration of renewables and the need for real-time data sharing between multiple players in the ecosystem. As more renewable energy sources are integrated into the grid, traditional static line ratings often lead to congestion, even when the true limits of transmission lines are much higher due to favorable weather conditions. To address this, GE Vernova, in collaboration with LF Energy, developed TROLIE, an open API aimed at facilitating the real-time exchange of dynamic line ratings.
The TROLIE initiative is part of the Limit Exchange Portal (LEP), a broader effort to provide grid operators and transmission owners with an interoperable solution for exchanging and validating transmission facility ratings. This ensures efficient coordination among different regional and transmission operators, helping optimize grid operations while deferring costly infrastructure investments.
Key Challenges
A key challenge addressed by TROLIE is the need to move from outdated systems with manual updates to more modular, real-time solutions. The transmission facility ratings now need to be updated hourly rather than seasonally, generating massive amounts of data. TROLIE enables seamless data sharing by using a modern API, which is vendor-agnostic and adaptable to different systems in the grid ecosystem.
The Impact of Open Source
Dupuis also touched on the strategic importance of open source in accelerating the adoption of new solutions in the energy sector. He explained that open source contributions not only enhance collaboration but also help vendors like GE Vernova to innovate faster and deliver products that meet the rapidly evolving needs of the grid.
The Future of Grid Management
Finally, the presentation concluded with a vision of how LEP and TROLIE fit into GE Vernova’s broader strategy for grid orchestration, emphasizing the role of modular software architectures, federated data systems, and containerized infrastructure. Dupuis highlighted the importance of partnerships and conformance programs to ensure the seamless integration of third-party solutions into this evolving ecosystem.
This session provided a glimpse into the future of grid management, where real-time data exchange and open collaboration will be key to navigating the energy transition efficiently.
