Infographic: Three Charts about the Electric Grid

When the Texas power grid was under stress from extreme weather earlier this year, one contributing factor was its relative isolation from the rest of the U.S. electrical system. That raised questions of just how the grid is put together and whether new power plants might be added to relieve the strain.

Texas isn’t the only state or provincial entity that runs a power grid separate from the continent-spanning interconnections, but it may be the most vulnerable.