Yeah, Kraftwerk counts as techno (although they did start out with pop sensibilities in a kautrock kinda fashion, the plot thickens). Defining "techno" can be as hard as defining metal. There's so many bloody sub-genres of techno that one man's hard house is another's tech-trance. Or something.
But classifying "techno-rock"? Where to begin? Would Panic DHH, The Shizit etc count as techno-rock? Basically big, industrial-metal kinda guitars with everything else being electronic & screamed vokills? Or am I thinking of a different genre or just Ministry?