[MH] Using Alternative Abilities for Powers

[JulianLW]

Originally Posted by Anthony

They don't explicitly say anything, it's just pretty much impossible to qualify for alternative abilities without having the same power source.

Yes, they do say something explicit. Again, page 11 of GURPS Powers, emphasis mine:

"Find each ability’s final cost after all enhancements and limitations (including the power modifier, if any), apply the divisor, and round up."

Obviously, power modifiers are not required.