Abstract: The invention describes a solar-electric lawn mower. The ergonomic operation of the mower is provided by a controller to minimize the current consumed. Change of grass density or any other change of a load to the blade is sensed by a controller and fed-back to the circuitry. Solar cells could be mounted on a mower and provide partial recharging of the batteries during grass cutting or recharge the batteries on a resting mower. Clean energy, low noise, no pollution, no energy cost, safe operation and low maintenance should be added as benefits to the estimated cost of the prototype.