The world’s electricity grids are facing unprecedented strain as demand surges from electrification, data centers, and renewable energy integration, while aging infrastructure struggles to keep pace. Traditional approaches to grid expansion—building new transmission lines and substations—face mounting challenges including sometimes decade-long permitting processes, escalating costs that can reach billions per project, and growing public resistance to new infrastructure. This mounting press...
The world’s electricity grids are facing unprecedented strain as demand surges from electrification, data centers, and renewable energy integration, while aging infrastructure struggles to keep pace. Traditional approaches to grid expansion—building new transmission lines and substations—face mounting challenges including sometimes decade-long permitting processes, escalating costs that can reach billions per project, and growing public resistance to new infrastructure. This mounting pressure has created an urgent need for innovative solutions that can unlock the hidden capacity already embedded within existing transmission networks.
What Are GETs and What Do They Do?
Grid enhancing technologies (GETs) represent a transformative approach to this challenge, offering utilities the ability to safely increase power flows on existing transmission lines by up to 40% in some cases without the need for new construction. These advanced technologies—including dynamic line ratings (DLR) that adjust capacity based on real-time weather conditions, high-temperature advanced conductors that can carry significantly more current, and sophisticated power flow controllers that optimize electricity routing—work by maximizing the utilization of current infrastructure. Rather than building around bottlenecks, GETs eliminate them through smarter, more responsive grid management.
On an episode of The POWER Podcast, Anna Lafoyiannis, program lead for the integration of renewables and co-lead of the GET SET (Grid Enhancing Technologies for a Smart Energy Transition) initiative with EPRI, explained that GETs can be either hardware or software solutions. “Their purpose is to increase the capacity, efficiency, reliability, or safety of transmission lines. So, think of these as adders to your transmission lines to make them even better,” Lafoyiannis said.
“Typically, they reduce congestion costs. They improve the integration of renewables. They increase capacity. They can provide grid service applications. So, they’re really multifaceted—very helpful for the grid,” she said. “At EPRI, we think of them as kind of like a tool in a toolbox.”
The economic and environmental implications are profound. Deploying GETs can defer or eliminate the need for costly new transmission projects while accelerating the integration of renewable energy resources that are often stranded due to transmission constraints. As utilities worldwide grapple with the dual pressures of modernizing their grids and meeting ambitious clean energy targets, GETs offer a compelling path forward that leverages innovation over infrastructure expansion to create a more resilient, efficient, and sustainable electricity system.
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