The qualitative section of the Resource Efficiency Module is based on a previously existing initiative called CPI2 (Carbon Performance Improvement Initiative). It contains evaluation points related to electrical, thermal, water, and chemicals. Based on learnings accrued during its ten-year run-time, the content of CPI2 was also updated with new features added. Furthermore, additional content was provided by a few Signatory Brands.
The quantitative section of the Resource Efficiency Module is based on the most commonly used greenhouse gas accounting standard, Greenhouse Gas Protocol. This helps suppliers to measure and manage their GHG emissions. To learn more the Greenhouse Gas Protocol, go to the following article: What is the GHG Protocol and why is this the standard used?