The Carbon Disclosure Project has created a system for busienesses to report their carbon emissions. This is a global programme that reports regionally and by sector. Here is part of the introduction from the European 2010 report.
"The Carbon Disclosure Project(CDP) is an independent not-for-profit organisation holding the largest database of primary corporate climate change information in the world. CDPw as launched in 2000 to accelerate solutions to climate change by putting relevant information at the heart of business, policy and investment decisions. CDP furthersprogramme this mission by harnessing the collective power of corporations, investors and political leaders to accelerate unified action on climate change. In 2009, 2,500 organisations in some 60 countries around the world measured and disclosed their greenhouse gas emissions and climate change strategies through CDP, in order to set reduction targets and make performance improvements.
In 2010, even more companies than ever before are reporting through CDP and managing their emissions. This data is made available for use by a wide audience including institutional investors, corporations, policymakers and their advisors, public sector organisations, government bodies, academics and the public.Climate change is not a problem that exists within national boundaries. This is why CDP harmonises climate change data from organisations around the world and develops international carbon reporting standards. CDP operates the only global climate change reporting system on behalf of 534 institutional investors (holding US$64 trillion in assets under management) and some 60 purchasing organisations, such as Dell, EADS, PepsiCo and Walmart."