Hydrofarm can be utilized in limited areas. This hydrofarm system uses a pump load to flow water as a planting medium. Thus, a sufficient electricity source is needed. Some farmers who want to reduce the use of electricity costs will use renewable energy. Therefore, this study applies PLTS as the main power supply source and will be combined with a power supply from PLN. Where the electricity produced by this PLTS can be monitored with the PZEM004T sensor and can be monitored from the blynk application with the help of IoT. This research method is quantitative. The results of the PLTS system design managed to supply the highest load at a value of 91.61 W. This design also applies ATS to move between supplies from PLN and PLTS. The PZEM004T sensor reading error for voltage output is 0.27% and current is 1.35%. For the distance of ESP32 as a data sender with a hotspot source without obstacles as far as 70 m and for the distance of data that can be received by users is unlimited as long as ESP32 and users are accessed by the internet.
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