The first product released by GregTech Intergalactical, previously known as the Bane of Alblaka.

Generates EU from Lightning.
Fuel Type
EU per Strike
Lightning
25 Million

Lightning strikes occur randomly when it is raining or thundering. Lightning strikes are 4x more common in a thunderstorm than in rain.
The Lightning Rod has an internal storage of 100 million EU, and does accept Covers.

In order for this block to function, it must have a pillar of Iron Fences on top of it. The chance for lightning strikes to occur is proportional to the total number of fences used, and the height of the highest fence. So, the highest probability of lightning strikes would be if the Lightning Rod was placed at bedrock level, and the Iron Fence pillar extended to the top of the map. Make sure there are NO blocks above the fence pillar. (Like a solar panel, the Rod checks if it can see the sky.)

The Lightning Rod outputs at a rate of 8192 EU/t (Quad-EV). It will attempt to output EU from all 4 of its sides. Attaching 4 HV Transformers and downgrading the voltage to HV (16 x 512 EU/p) is generally recommended. Alternatively, as the Matter Fabricator can accept 8192EU/p, a Matter Fabricator can be directly connected and fed using a Lightning Rod.

Note: Forestry and Ars Magica have means of forcing rain in the world. This can be used to artificially generate more lightning strikes. A Mystcraft age with the Lightning symbol works for this as well.
Note 2: The Lightning Rod code checks for the server's weather state (Rain/Thunder/none) when running its lightning strike calculations. This means that, while certain mods like Extra Bees or Modular Powersuits may have ways of causing lightning to strike in specific places, these will NOT trigger the Lightning Rod.

Trivia:

Recipe:

Lightening Rod Recipe.png
4 Energy Flow Circuits
4 Highly Advanced Machine Blocks
1 Supercondensator

Normal Setup:

Lightening Rod Setup.png

Quote from GregoriusT :

You may think "What the Fuck is a Lightningrod?", I will answer your Question: A Lightningrod is a Device, which uses the Power of Thunderstorms, to convert them to usable Electricity. I produced it like this:
Due to the high Voltage of Lightning and limited Space, I wasn't able to integrate additional Transformers, to convert the Energy down, to a normal Niveau. So you get 8192 EU/t after one single Strike (until the Supercondensator is empty).
But Gregorius, my Cables cant handle that amount of Energy!
Well, Downtransformation is your Problem, i added four EV-Slots to the Rod, then you can convert it to 4x 2048 EU/t using HV-Transformers.
And now, how to get it to work for you: 1. Install it 2. Get a Lightningrod 3. Get a bunch of Ironfences 4. Make a large Tower on top of the Rodblock with the Ironfences 5. Make sure, that there is absolutely NO BLOCK above that Tower! 6. Place 4 HV-Transformers at the Sides of the Rod, before you connect it to your E-net. 7. Wait for a Storm. 8. ...? 9. Profit!
We are not responsible for people, who get impaled/toasted on the Lightningrod. And we are also not responsible for any damage, which is caused by Quad-Extreme-Voltage.