Descriptions
As I mentioned before the main antagonist/villain of my story has the ability to control electricity. This electricity control is fairly powerful (think on the level of enel from one piece). As such this character has the ability to start lightning storms and aim/trigger the lightning bolts. The main problem is that the lightning lacks the power to do anything considerable to the superhuman characters who are able to withstand the blast from a tank. So this character decides that the best way to do damage to their enemies would be to turn the weak lightning bolt into a super strong lightning bolt that is dozens of times stronger than the strongest IRL lightning bolts.
Constraints
- The reason this character is summoning lightning is because it is untraceable so for example if I shoot a lightning bolt at Mr punch face and his friends I'm gonna get jumped but if I summon it he cant find me and I can just spam lightning bolts eventually killing him.
- The characters electricity manipulation has a range of 1 km.
- They can use their electrokinesis to mimic powers like pyrokinesis, telekinesis, photokinesis, flight/super speed, and mind control.
- The max amount of volts and amps they can generate is about 1 billion volts and 300,000 amperes.
- They can teleport electricity into things (that are not living)
- They can use plasma and precise control to create wires and electrical circuits.
- The lightning should be about 20 times more powerful to injure superhumans.
Things that I do not think will work
- Pumping a large amount of current into the lightning wont work due to their reaction time being unable to track lightning.
- Also, adding voltage will decrease current.
- Making the channel of lightning narrower to increase how much gas is heated and how intense the shock wave and heat is might work but unless they set it up in advance they wont be able to do it to an already existing bolt.
- Making a capacitor would probably work but I haven't researched that yet.
- Causing a large number of lightning bolts to cluster up would work but it would be noticeable to Mr. Punch face and his friends.
Question itself
So how can a powerful electrokinetic cause lightning to be powerful enough to harm superhumans who can tank a normal lightning strike.
(sorry for the long question)