bz_bz_bz parent
ERCOT is roughly 3x bigger than TVA in terms of both energy demand and service area.
They said similar. Similar in the same way a flat arid landscape that is the second largest in size in the union compares to a mid-sized state with mountains and more annual rain fall and is heavily forested with an average temp 20° lower. You know, not the same, but similar. Maybe they meant simile?