Göttsching is krautrock - a terrible but accepted name for the pre-techno synthesizer scene that formed in Berlin in the late 60s and became popular in most of Europe (not so much Germany) in the 70s.

The biggest names on the scene were Klaus Schulze and Tangerine Dream, Göttsching was in a peripheral band called Ashra Tempel but also played drums for Schulze. The less famous names on the scene - Roedelius, Cluster, Conny Schnitlzer - influenced Brian Eno's ambient music when he went over to Berlin to produce Low for Bowie.

As for techno vs house - the big difference is the rhythm pattern. Techno is square and on the grid, house feels like it has some swing and the beat is "skippier" with offbeats, anticipations, and sometimes triplets.