Very promising project concept. Some questions and comments:

1) The hydro power station is not owned by you - I presume Austrian Gov owns them, hence, leasing is subjected to control.
2) The land next to the hydro power station is limited - Who owns it and how do you intend to expand?
3) How many and do you intend to expand into other hydro power stations - after you collected investors money?
4) Could you also work out the estimated ROI for an investor of 50 eth, base on your 80% profit distribution.
5) Can you make a comparison of a typical mining operation cost in China and Hydrominer?

Again, great idea, but need to address some pointers.