All GreenWorks products have a carbon footprint of ZERO. That means that absolutely no emissions are ever released, and you'll never have to inhale gas fumes while mowing your yard or trimming your hedges. Plus, it means higher efficiency, so you'll get more out of your lawn tools each time you use them. Each product is EnergyStar-approved by the Environmental Protection Agency, which means that energy usage is reduced by about 35 percent. For GreenWorks, "Green" is more than just a name - it's a commitment.