Photovoltaic plants and off-grid connections have been a solution for rural and remote areas in the past few years. It is, however, requiring a group of technicians to maintain the efficiency of the PV panels in a regular based. PV panels also suffer a steady reduction in their effectiveness due to the need for cleaning and environmental aspects. The project monitors the output of individual PV connected in the array and advises timely maintenance. The technology of wireless sensor networks consists of a small device. Efficiency trends are to be utilised to activate the cleaning robot to travels the given path and cleans the suspected PV and then moves to the next one as required