Pioneer in electricity (5)
I believe the answer is:
tesla
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">pioneer in electricity</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for tesla that I've seen before include "Physicist" , "SI unit; steal (anag.)" , "electrical unit" , "Unit of magnetic flux density" , "Inventive sort" .)