Calc Nue Sukuna ver. Lightning Stroke Energy

In the chapter 213 The Nue summoned by Sukuna cause several lightning strikes around a large area. Now i would calculate the energy that this lighting bolts generate.

To get the measures i gonna use the Helipad H as reference.


The lightning had a base of 4.4 meters and a radius of 2.2 meters, now we need the area. And area is pi*radius^2.
Area
A=pi*2.2^2
=15.2 squad meters.

Having the area of the lighting we need the constant of the lightning density to get the Amps, the constant of the lightning density is 955e+6 A/m^2 witch is the ampers per squad meter. And we multiply that constant with the area.
Amp
Amp=4.5*955000000
=1.452106956e+10 Amps

Now we need the Watts, multiplying the Amps with the Volts, generally a lightning bolt had 100.000.000 Volts so is something like this.
W=1.452106956e+10*100000000
=1.452106956e+18 Watts

And to get the joules is Watts=Joules/s, and generally a lightning bolt time frame is 0.2s, and without any time frame in the manga I'll use that time because is the more conservative, so the energy is Watts*Time.
E=1.452106956e+18*0.2
=2.904213913e+17 joules or 69 Megatons of TNT
City level

Any correction or advice is welcomed.