This paper summarizes and reviews different technological developments for making efficient and cost effective lawn mowers. Such lawn mower may be powered by solar energy, conventional electric and internal combustion engine. For each type of energy source mentioned above, we discuss the mechanisms followed for lawn mower device, the design of the model and results obtained in various literatures. Sometimes two such energy sources may be used in combination, like solar powered robotic lawn mower. Keywords: lawn mower, solar energy, sensor, motor, battery, exhaust