# US transformer shortage blocks grid upgrades

> US transformer shortage delays renewable energy projects and grid modernization.
- Title: US transformer shortage blocks grid upgrades | Shortify
- Summary: US transformer shortage delays renewable energy projects and grid modernization.
- Keywords: large power transformers, grid modernization, renewable energy, data centers, copper supply, grain-oriented electrical steel, power grid, transformers, electricity transmission, grid-enhancing technologies, The Conversation
- Source: The Conversation — https://theconversation.com/short-supplies-of-crucial-equipment-stymie-changes-to-us-electricity-grid-293650
- Author: Jasmine Garland
- Read time: 1 min
- Topics: large power transformers, grid modernization, renewable energy, data centers, copper supply, grain-oriented electrical steel, power grid, transformers, electricity transmission, grid-enhancing technologies, science, ideas
## 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.
## Key takeaway

Shortage of 150-year-old power transformers delays US grid upgrades and renewable energy projects.