Automation system hydroponic is one of the farming solution. There are several problems in hydroponic that can be divided into two parts. First part is the hydroponic system. The system needs to control and monitor temperature, pH and distribution of water. Second part is the power supply, generally it run from conventional electrical energy and it should continue to run all the time. Electrical energy needs is increasing from time to time. In this research, there are two possible solutions to solve the problem. The first possible solution is the automation for hydroponics system that would measure and control temperature, pH and water level in water tank. The second possible solution is smart solar power plant unit which function as primary power supply and will shift to conventional electrical energy if there is no adequate energy to run the automation for hydroponics system. The smart solar power plant unit monitor the intensity of light, voltage and electrical current between battery and DC to AC converter and the voltage that produced from solar panel. The value of temperature, pH and water level in water tank, intensity of light, electrical current and voltage will be sent to a server by wireless communication. The result of this research is a prototype of automation system hydroponic using smart solar power plant that can monitor and control pH, temperature, water level, intensity of light, electrical current and voltage.