TechnicalUp to date · Jan 15, 2026
Congestion
When too much electricity needs to flow through a transmission line or path that doesn't have enough capacity, leading to rerouting, curtailment, or higher prices in the constrained area.
Related Terms
Transmission Charges
Fees for transporting electricity over high-voltage power lines from generation plants to local distribution substations. Usually a smaller portion of residential bills.
Curtailment
The intentional reduction of renewable energy output below what the resource could produce, typically because the grid cannot absorb the excess generation.