Here is a copy of a presentation on the need for a common accounting approach that I prepared for a seminar on managing carbon credits and emissions held at the Institute of Mechanical Engineers in London in September 2007. The aim of the document was to encourage discussion and solicit feedback on how we might assign a price to carbon and use this to incentivise investment in more carbon efficient processes. It also outlines the problem of how the value of carbon could be handled via the balance sheet and profit and loss account. This is not a simple task.
For more information about carbon footprints and some details of how these might be determined, please refer to the set of lecture notes presented in earlier blogs: Part 1 and Part 2.