This paper presents IOT based generator fuel monitoring and power flow control system in Base Station Cell Sites with SMS Alert. In Telecommunication Network cell sites, generators are manually monitored by the site operators and the process of monitoring the fuel and the temperature level of a generator installed in every cell site is not efficient. Cases had been reported where sites shutdown for hours because of careless and unprofessional practice of the site operators, thereby imparting huge loss to the Telecommunication company. This problem has lingered and calls for serious concern. Therefore, this work introduced GSM based monitoring process to address the unprofessional practice used by the cell site operator to monitor various generators. The proposed system comprises of both hardware and software. The hardware part consists of ultrasonic sensor, temperature sensor, Microcontroller, GSM module, power supply, Invertor, DC generator, motor, relay, load etc. while the receiver section is the mobile phone of the site operator. The software part includes the algorithm and program code written in C++ programming language. The system transmitter was carefully designed and tested. The result shows that the developed system perfectly monitored the level of the fuel and temperature, power condition of the generators in the targeted cell site and transmits the status (parameters) via wireless to the site operator’s mobile phone. With this, cell sites can be sustained by monitoring the generators powering the Base Stations and alerting the site operator accordingly.