From The Conversation · Jasmine Garland · · 1m
US transformer shortage blocks grid upgrades
US transformer shortage delays renewable energy projects and grid modernization.
In brief
US transformer shortage delays renewable energy projects and grid modernization. Shortage of 150-year-old power transformers delays US grid upgrades and renewable energy projects. Originally reported by The Conversation.
Power transformers
Large power transformers are crucial to the US electricity grid but in short supply.
Transformer function
They convert high voltages for transmission to home voltage levels and weigh up to 400 tons.
Transformer demand
Generator step-up transformer demand nearly tripled between 2019 and 2025.
Transformer supply
Only one US mill produces grain-oriented electrical steel, a key transformer material.
Transformer delays
Custom transformers take over three years to build and install.
Data center workarounds
AI data centers bypass the grid using on-site natural gas power plants.
Gas turbine challenges
Gas turbine blades require specialized metal and ceramic heat shields.
Transformer solutions
Standardizing transformer designs could speed up production and spare availability.
What to remember
Shortage of 150-year-old power transformers delays US grid upgrades and renewable energy projects.
