Why can’t everything just run off AC/DC?

Question

Edit: Sorry I meant just off of either AC Or DC

In: Engineering

Answer 1

AC is better for transmission but is nigh-impossible to store.

DC is better for storage but sucks for long range transmission.

Here’s an article by NASA that goes into more detail: https://pwg.gsfc.nasa.gov/Electric/-E11-reason.htm

Nearly every actual use of AC power could be replaced with a DC alternative, but you would need a DC power plant every dozen miles or so because DC power transmission is so inefficient.

The same can NOT be said for universal use of AC, because AC batteries don’t exist.