Katrina Turner, a software engineer at the Energy Sciences Network (ESnet), highlights the crucial role of Grafana in visualizing network data to ensure the smooth operation of ESnet, a high-performance network funded by the U.S. Department of Energy. By leveraging Grafana's extensible architecture, ESnet has developed custom visualizations such as the Sankey Panel, Slope Graph, Bump Chart, Chord Diagram, and Matrix Panel to monitor network activity and enhance their data analysis capabilities. These visualizations, integral to projects like Stardust and NetSage, help predict capacity needs and visualize network flow, connectivity, and user rankings over time. The collaboration and contributions to the Grafana community illustrate the evolving capabilities of Grafana, especially after a transition to React-based plugins, allowing for tailored solutions that meet specific analytical needs of the network.