Electricity transmission grids in the US

Or, why there's still time for Texas to secede.
  1. Eastern power grid
    Covers: Every state east of the Rockies.
  2. Western power grid
    Covers: Every state between Rockies and Pacific Ocean.
  3. Texas power grid
    Covers: Texas. Note to Texas... I realize this is so that you can secede at any time, and I'm ok with that. More than ok, tbh.