One of the new renewable energy that can be utilized in Indonesia is abundant water resources. By using PLTMH technology (Microhydro power Plant) We can utilize the energy of the water flow to be used as a hydroelectric power plant. This research analyzes how potential on irrigation channels in Ngadirojo, Secang, Kab. Magelang, Central Java province. By seeking the discharge of water from the irrigation tract and also the high falling water we can find out what is the potential power of the irrigation tract. After that we have to find a suitable turbine for this hydropower plant in order to produce electrical energy as efficiently as possible. After that search for the output power that can be generated from the generator. The power that can be produced from the irrigation channel water flow of 194.922 kW. While the power to be produced after the turbine selection of 155.9376 kW. And for the output power of the generator is 133.3266 kW. From the calculation of output power of the generator is 133.3266 kW, while for classification of power plant Microhydro power capacity 5 kW – 100 kW. Therefore, research on the irrigation tract is not categorized as Microhydro power plant but this is categorized as Minihydro power plant whose capacity is from 100 kW – 1 MW.