Still keeping it green so I thought we would touch down on electric lawn mowers. There are several on the market which are corded, cordless and even push motorless. Some of the brands are Neuton, Worx, Earthwise, Scotts among others. Not only are they light-weight and  quiet but they are clean. No gas, no oil and no emissions. The only con is that they are a little more narrow but thats about it.