Greenhouse Gas Emissions of Product Replaced (PD2243)

This metric is intended to capture the GHG emissions of the product that is being replaced by a product from the organization, with emissions measured over the lifetime of the organization's product. For example, an organization that sells solar lights might report the product replaced as a kerosene lamp, reporting against this metric the GHG emissions from that replaced kerosene lamp over the lifetime of the organization's solar light.

The Greenhouse Gas Protocol (GHG Protocol) is the most widely used international accounting tool to understand, quantify, and manage greenhouse gas emissions. For more information on the GHG Protocol, organizations should refer to the following:

• Greenhouse Gas Protocol Standards (http://www.ghgprotocol.org/standards)
• Greenhouse Gas Protocol Calculators (https://ghgprotocol.org/calculation-tools)

In some circumstances, this metric can help describe the CONTRIBUTION an enterprise likely had to the degree of change (depth) in outcome that the stakeholders experienced, relative to what the market or social system would have done anyway. For more on the alignment of IRIS metrics to the five dimensions of impact, see IRIS+ and the Five Dimensions of Impact (https://iris.thegiin.org/document/iris-and-the-five-dimensions/). No single metric is sufficient to understand an impact; rather, metrics are selected as a set across all dimensions of impact. When possible, the selection of metrics to measure and describe the five dimensions should be based on best practice and evidence.