According to wiki, techno originated in Detroit. Don't know if that's really true or not, it is wiki.
https://en.wikipedia.org/wiki/Detroit_techno
It depends what you mean by "techno". The music style has done a lot of rapid rebranding over the years. Techno didn't really have one birthplace. It was a whole group of disparate movement spread out over the world who borrowed from each other. Today we would probably call Detroit techno for House Music.
What makes this hard is that the star in the... well... today I guess it's just "electronic dance music" is that the star isn't the person who made the music. The star is the DJ. Derrick May is one of the earliest Detroit Techno/House stars. He was one of the people who started this whole thing. But he has very little original music created. Especially not originally. He just mixed stuff like Depeche Mode, New Order and Kraftwerk. The magic was in the mix. And mixes were immediate and temporary, made for/by a party. The DJ created the music/mixing in response to how the people reacted, at the party itself. Derrick May's mixes of Depeche Mode, (for instance) sounded very little like Depeche Mode. That whole culture around techno, I think it's fair to say, originated in Detroit. But you can make a fair argument that it also originated elsewhere. Over time, of course, techno producers started producing original works designed to be mixed by a techno DJ. But that happened elsewhere (in England).
Yes, it's my generation. This is my youth.