# Transmission constraint costs at largest US grid surge to $6 billion in 2026

https://mins.news/en/item/28852

- Reuters, 2026-08-21 21:01 UTC
- Economy
- Original: https://www.reuters.com/business/energy/largest-us-grids-transmission-constraint-costs-surge-6-billion-2026-2026-08-21/?link_source=ta_bluesky_link&taid=6a88bca8f7c24d00010fabfd

> Congestion costs at PJM, the largest U.S. power grid, rose 43% to $6 billion in the first half of the year, according to the grid’s independent watchdog. Overloads on high-voltage transmission lines intensified during the period.