thanks for the reply,
well first a hydro plant is not possible due to no river or floating water nearby. a generator consumes aprox 8-10k USD of Diesel at this Power. solar system i heard of something from 1000$ per kw for hardware and installation i dont have at the moment the place to host something like this. I got 12 hours free electricity at my place but need to cover the other 12 hours by myself. i think there is no other way then a big Diesel generator providing the electricity needed.
The solution suggested above doesnt require a river or flowing water. The suggestion was dig/build two ponds at different elevations. Then during your twelve hours of power run a pump to pump the water to the higher elevation. Then during the 12 hours of no power, the water flowing down hill will power the generator.
(An above ground pool flowing into a dug pond or in ground pool for example.)