I would like to set up a solar mining farm in Hungary.
The goal that the electricity cost will be zero, and the mining would be more effciently, return on investment (ROI) is two years.

I would like to setup first one 50kW solar system farm , with 40 antminer s9 mining equipment, approximately 570Terrahash mining power.
Ths costs around 250.000USD , but with zero electricity price the investment returns very fast.