Inertia, frequency regulation and the grid

The old system of regulating frequency on electricity grids with the help of the inertia provided by large spinning masses is under threat by the rise of wind, solar, and batteries. But what will replace inertia-based control, and how will the transition work?

Issue 02-2019

The Electric Reliability Council of Texas is one of several U.S. utilities to have expressed concern over the loss of inertia and frequency control on its grid.

Image: ERCOT

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