Electric power network (4)
I believe the answer is:
grid
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">electric power network</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 grid that I've seen before include "Lattice, mesh" , "Pattern of crossing lines" , "Network of horizontal andvertical lines" , "entries in this" , "Network of intersecting lines" .)