Aggrotech and Hellectro. Wikipedia defines this as "Aggrotech regularly consists of harsh song structures, aggressive beats, and explicit, pessimistic, militant lyrics" [source]
It was a bit difficult to get into this sort of music. I really dislike screamy singing, but I think the band that made me love Aggrotech was Feindlug. I slowly started listening to the music more and got used to it over time.
Ersatzteil by Feindflug
I remember hearing this song so often at the club that I really started to like it. It's so stompy and flowing at the same time.
Another Aggrotech band is Nactmahr, who I had the pleasure of seeing in 2011. A very good band with a great stage performance.
Tanzdiktator by Nachtmahr
Boom Boom Boom by Nactmahr
Here are some more songs:
Spit It Out by Aesthetic Perfection
Bind Torture Kill by Suicide Commando
The Source by God Module
Part 1 [here]
Part 2 [here]
Part 3 [here]
Part 4 [here]
Part 5 [here]