There is no point in calculating your carbon footprint - you need to understand it!
Ten credible on line calculators gave Carbon Footprints that ranged from 27 000 to 76 000 pounds of carbon emitted a year for the same input data. An understanding of the greenhouse gas (GHG) emissions associated with what we do and consume will give us a better chance of reducing our emissions than using such inaccurate calculators.
What’s the problem?
J. Paul Padgett and collegues at Vanderbilt University and the University of Washington analysed the results obtained using 10 carbon footprint calculators from credible organisations including; American Forests, Bonneville Environmental Foundation (BEF), CarbonCounter,The Conservation Fund and the Environmental Impact Agency (EPA). Their results are published in the Environmental Impact Assessment Review 28 (2008). They identified the massive range refered to above, that ammounts to a difference of 180% between the lowest and highest figures and concluded that “Given their prevalence and potential influence, CO2 calculators can provide even greater public benefit by providing greater consistency and clarity.
