Here is the quickest way to earn this achievement:Construct 1 Lightning Rod.
Head to the nearest safe zone.
Deposit all of your gadgets in to the stash so that only the lightnng rod remains.
Stay in your safe house
Now to ensure that when you throw the lightning rod stands upright, hold in to aim
and then throw when the red arrrow appears, this way it always stands up.
once it has landed upright immediately pick it up and as there are no other gadgets in your inventory you can immediately select it again with
and repeat the process without having to go through your whole inventory.
RInse and repeat 25 times. Without ever needing to leave your safe house.
You do not have to electrocute anybody. IT APPEARS THE ACHIEVEMENT IS SIMPLY FOR DEPLOYING A LIGHTNING ROD 25 TIMES.