The term 'carbon footprint' has become tremendously popular over the last few years and is now in wide spread use across the media. 'Carbon footprint' has become a widely used term and concept in the public debate on responsibility and abatement action against the threat of global climate change. A 'carbon footprint' measures the total greenhouse gas emissions caused directly and indirectly by a person, organisation, event or product. With climate change high up on the political and corporate agenda, carbon footprint calculations are in strong demand. Numerous approaches have been proposed to provide estimates, ranging from basic