"Greenpeace assesses companies based only on their public information and practice to ensure the ranking is transparent. Companies can be held publicly accountable when they do make commitments. Making changes public also helps drive competition between the companies. The only criterion where nonpublic information is accepted is on advocacy, where a company may have voiced a clear position to relevant decision makers but does not make this public.

Further information concerning the methodology is available in the http://www.greenpeace.org/international/en/initiatives/climate-change/cool-it/Initiative-analysis/Guide-to-Greener-Electronics/FAQ/."