Carbon Disclosure project
"Companies included in the Carbon Disclosure Leadership Index
2011 have a higher total return from January 2005 to May 2011 than Global 500 companies, outperforming them by a total of 40 percentage points over the six year period. "CDP Global 500 Report 2011, "Accelerating Low Carbon Growth" (p.34).
Every year, the Carbon Disclosure Project publishes Global Reports and Leadership Indices based on data collected from organisations in some 60 countries worldwide. The CDP Global 500 report examines carbon reduction activities at the world's largest public corporations, qualifying the ones with top scores for disclosure to be listed in the Carbon Disclosure Leadership Index (CDLI).
Companies are encouraged to report emissions data using the Greenhouse Gas (GHG) Protocol, which is the most widely used international accounting tool applied by governments and business leaders to quantify and manage greenhouse gas emissions.
Box 8.3, page 52: "As with data from other emission sources, companies should select electricity emission factors that are geographically specific to the electricity sources used in the product inventory. When an electricity supplier can deliver a supplier-specific emission factor, and these emissions are excluded from the regional emission factor, the supplier's electricity data should be used. Otherwise, companies should use a regional average emission factor for electricity to avoid double counting."
Publicly Available Specification developed by the British Standards Institute. Chapter 188.8.131.52. "Eligibility of renewable energy-specific emission factors: A renewable energy-specific emission factor shall be applied to a process using renewable energy, only where both of the following can be demonstrated.
a) The process used the energy (i.e. use of renewable energy generated onsite) or used an equivalent amount of energy of the same type to that generated (i.e. use of renewable energy delivered via an energy transmission network that combines different types of energy generation), and another process did not use the energy generated while claiming it as renewable.
b) The generation of this renewable energy does not influence the emission factor of any other process or organisation using the same type of energy (e.g. renewable electricity), and is excluded from the national average emission factor.
Where conditions a) or b) are not met, national average energy emission factors shall be used".