A bit more, based upon understanding electricities mechanics
Found this in the wiki for gigabolt
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http://www.champions-online-wiki.com/wiki/GigaboltGigabolt allows you to summon 1.21 gigawatts to blast your foes.
Requirements: Requires 5 powers from Electricity or 58non-energy building powers from another framework.
Method: Tap
Deals electrical damage to anything in line with your primary target. (Cylinder AoE)
50% Chance of applying Negative Ions, a short duration effect which causes future electrical attacks to arc to secondary targets.
75% Chance to chain single target electrical damage.
Method: Charge
Increases damage and energy cost of the tap effect.
Can only be charged while affected by an energy form.
Remove energy form effect.
ADVANTAGES
Accelerated Metabolism
Every time you use this ability you have a chance to return a small amount of energy.
Death Arc
Any enemies killed by Gigabolt will unleash AoE damage to nearby targets.
Advanced Info:
100 foot range; 10 foot cylinder
Targets 5 foes
2.33 second charge
0.83 second activation
43-141 energy (based on charge)
and they define negative ions as
Negative Ions, a short duration effect which causes future electrical attacks to arc to a secondary target
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OK so part of the goal of electricity is to have your attacks arc. Some abilities have a chance to apply negative ions. Creatures with negative ions will arc you next attack. This is where something like Gigabolt is really nasty, since there is a 50% chance to apply negative ions to any target it hits, and the bolt passes through and hits anything in its path. So if you have a group of 4, odds are after your first gigabolt 2 of them will have negative ions. A follow up gigabolt will then arc off those two and deal damage to the others. Furthermore even if you do not get negative ions, you get an arc 75% of the time with gigabolt.
So the way I had been playing was to port into a group, and while I was dephased pick a target and turn on the energy builder. Then I would dephase and turn on the sparkstorm toggle. Stuff would die.
I tried this in project awakening. I would port in and do the sparkstorm number, only to have several groups add and the turrets pop up and the focused fire of the room would toast me.
So I started pulling with gigabolt. Gigabolt has a long range, so I would hang on the other side of a door and maybe tag a patrol with it. First bolt would go through and arc and light up a few guys with negative ions. I could then bolt again (just tapping), and bolt a third time pretty much killing all. If anything got close, I would turn on sparkstorm and it would knock it away. Having a narrow door meant they had to close into a cluster in the door, making gigabolt more effective.
So now I could use sparkstorm as a defensive shield, knocking stuff off me, and let gigabolt do the main work on killing stuff.
This technique was highly effective until I started fighting Godron. Godron groups would have a lancer or a slavemaster or adjucator, which were just plain nasty. If you did not drop them fast, they would kill you. Without them tightly clustered, much of the killing power of gigabolt is lost (the main hit is minor compared to the arcing). Were I to port in, the sparkstorm was not enough to kill them quickly, and they would tend to scatter out of range of the sparkstorm and wear me down. What broke this impasse was using electrocute on the tough one, holding it in position, then porting on top of it and turning on sparkstorm. usually another melee type would close, and I could then have sparkstorm + gigabolt arc off of the main held target to rapidly drop the adds. I could also swing about my held target to line up a gigabolt to hit both it and the guy standing off.
So I think much of the playing style of Electricity is going to be exploiting enemy AI to make them cluster tightly. Running away and gigabolting as you run would tend to hit all of the guys chasing and drop them. So that should be an effective technique. Turning corners or using doorways to force them to close and cluster to get line of sight on you should also magnifiy the damage of gigabolt and up your kill rate. Ideal situations are things such as the Hunter Patriot recruit misssion, where you can find a line of 5 recruits, and just send the gigabolt on through the entire line, which with arcing, kills them in a couple taps.
I also found out why Gigabolt could not be charged. Gigabolt can only be charged if you are in an energy form state. Electric form reads (from wiki)
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Your mastery of electricity grants you the knowledge of how to most effectively use your energy powers and how to reduce the effect of your attacker’s energy attacks.
Requirements: Requires 3 powers from Electricity or 5 non-energy building powers from another framework.
Method: Slotted Passive
Can be slotted in an Offensive or Balanced passive power slot
Only active while in combat
Increased all of your energy (electricity, sonic, particle) damage. This increase scales with your Endurance.
Increase your resistance to all energy effects and greatly increases your resistance to electricity effects. These resistances scale with your Recovery
Generates a small amount of energy when you are struck with electrical attacks
Increase your energy equilibrium and the rate your energy builds to your equilibrium.
Counts as an energy form.
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The part to notice is the 'only active while in combat'. So until the game recognizes you as in combat, electric form does not turn on, and you can not charge gigabolt. If you come out of teleport at range to a group where they can not see you, that first gigabolt will not charge. So you can not charge that gigabolt up and alpha strike kill another group unless you are in combat. So maybe you can drag a henchman along with you to a new group, with him doing minor damage to you, but holding you in combat, then you charge up gigabolt on a new group. I don't do that though. I just tap gigabolt, since you get about as much damage tapping it (probably more) because each tap means more can get negative ions. If you charge that is fewer taps, and you will not arc as much.
About the only time I bother with a charge is if I get a knockback on a boss. Then I know I am not going to get hammered for the next few seconds as the boss gets back up off the ground and resumes its attack sequence.
I do think though lightning arc is a better attack for a single surviving target. If there are multiples clustered, the gigabolt is going to give you more damage from arcing. But if it is just one, perhaps the maintained attack lightning arc on the heels of a hold is the way to go.