# Physical Security of the U.S. Power Grid: High-Voltage Transformer Substations
> **Full Report** · 2015-07-02 · `R43604`
## Report
- **CRS ID:** R43604
- **Series:** Full Report
- **Publication date:** 2015-07-02
## Documents
- [PDF](https://www.everycrsreport.com/files/20150702_R43604_df43c1c3c34ecca8d6730fcca7cff108dbdd4a66.pdf)
- [HTML](https://www.everycrsreport.com/files/20150702_R43604_44281daf0b80119cbc0f717a86e895dc00cde915.html)
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