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How hyperscalers are changing the electricity system
15/5/2026
10 min read
Feature
To better understand the impact to the electricity system of the gigawatt-scale loads that hyperscalers are introducing to electricity grids, Rice University, Texas, MBA students Jessica Gillispie, Christopher Pham and Mary Wolf, and professors Melissa Stark FEI and Linda Capuano researched the impact of hyperscale loads in three US regional transmission operators: ERCOT (Texas), PJM (mid-Atlantic) and SPP (Midwest).
At the 9 April 2026 US House of Representatives Committee Public Hearing on data centres, the Electricity Reliability Council of Texas (ERCOT) shared three important data points:
- ERCOT is tracking approximately 410 GW of large loads seeking interconnection, of which ~87% are data centres, with most of the interconnection requests at 750+ MW.
- Solar and energy storage account for more than 76% (341 GW of 454 GW) of the generation seeking interconnection in the ERCOT grid.
- At a growth rate of 271%, some 61 GW of gas project capacity has entered the queue since the Texas Energy Fund (TEF) was passed in 2023.
These ERCOT statistics illustrate the impact that hyperscale entrants are having on the electricity system. Data centres now regularly request hundreds of megawatts to multiple gigawatts of power demand at a single location. This level of demand was historically associated with entire metropolitan areas and developed incrementally over decades. Hyperscale data centres, particularly those optimised for artificial intelligence (AI) workloads, now concentrate that demand in a small number of nodes and deploy on commercial timelines measured in months rather than years.
This shift is not simply about more electricity consumption. As outlined in the four findings below, the arrival of hyperscale data centres changes how loads interact with the power system, how risk is created and allocated, and how institutions govern the grid access function.