Maps

In this section, find maps of the ERCOT and North American Electric Reliability Corporation (NERC) regions.

To download the JPEG versions of these maps, click on the link to display the image at actual size. If you are on a PC, right click on the full-size image, and select "Save Picture As." Macintosh users should click on the image and select "Save As."

ERCOT Region ERCOT Region
(02/19/2008, jpg, 94.1 KB)
ERCOT Region by County ERCOT Region by County
(09/13/2010, pdf, 772.5 KB)
NERC Interconnections NERC Interconnections
(04/14/2009, jpg, 233 KB)
NERC Regions NERC Regions
(02/19/2008, jpg, 309.6 KB)