The National Laboratory of the Rockies has released a comprehensive analysis examining obstacles in the domestic supply chain for large power transformers, or LPTs, as they relate to hydropower infrastructure. The report, titled Large Power Transformer Supply Chain Gap Analysis and Domestic Content Strategies for Hydropower Rehabilitation, was funded by the U.S. Department of Energy’s Hydropower and Hydrokinetic Office.
Large power transformers play an essential role in hydropower operations by converting electricity generated by hydropower turbines to high voltages suitable for long-distance transmission across the electrical grid. These custom-built devices are fundamental to the nation’s power infrastructure, with more than 90% of power consumed by Americans passing through high-voltage transformers at some point during distribution.
The new analysis builds on the Department of Energy’s earlier Hydropower Supply Chain Gap Analysis, which had identified five domestic supply chain gaps. The focused examination of LPT-specific challenges aims to support construction, upgrades, refurbishment, and relicensing activities at existing hydropower facilities. Hydropower currently accounts for more than 6% of total U.S. electricity generation and is expected to maintain significance in the grid infrastructure.
Researchers working with the National Laboratory of the Rockies drew on input from industry participants to identify nine major challenges affecting the LPT supply chain for hydropower applications. With these challenges now documented, stakeholders can develop targeted solutions through policy adjustments, financial incentives, loan programs, and technology investments. The findings are intended to guide workforce development initiatives and encourage growth in domestic manufacturing capacity within the LPT sector supporting hydropower operations.