O'Reilly logo
  • Sean Wilson thinks this is interesting:

On the flip-side, at very high voltages, wires offer less resistance to DC than to AC, thus making DC more efficient to transmit than AC over very long distances.

From

Note

Is this wrong??

This link says AC is more efficient at high voltages: https://learn.sparkfun.com/tutorials/alternating-current-ac-vs-direct-current-dc

Also, if this isn't wrong it contradicts the previous statement about AC being used across powerlines. Why would they use AC if it's less efficient?