Better real-time data for the country’s congested transmission lines

Dynamic-line-rating projects reveal how much power transmission lines can handle, expanding clean energy capacity without costly upgrades. The U.S. needs a lot more of them.

By Jeff St. John  . 

A Heimdall Power sensor on a transmission line crossing a wintry landscape
This Neuron sensor made by Heimdall Power — also known as a "magic ball" — is one of the many dynamic-line-rating technologies being deployed to find the hidden capacity on U.S. power grids. (Heimdall Power)