The greenhouse gas equivalencies calculator can help you understand just that, translating abstract measurements into concrete terms you can understand, such as "equivalent to avoiding the carbon dioxide emissions of 183,000 cars annually."
This calculator may be useful in communicating your greenhouse gas reduction strategy, reduction targets, or other initiatives aimed at reducing greenhouse gas emissions.
Energy Star Tools and Resources Library
ENERGY STAR connects you with a broad range of tools and resources to help you implement a successful energy management strategy. You'll find a Facility Energy Assessment Matrix, Industrial Energy Management Information Center, and other tools to assess buklding and plant energy efficiency.