Product Hours of Light Available (PI3486)

This metric is intended to capture hours of light made available by a product from the organization during the reporting period, not hours of light made available throughout the product’s lifetime. For light provided over the product’s lifetime, organizations should report Energy Consumption of Product (PD6596), which can be used to gauge efficiency gains associated with the product.

This metric is intended to capture hours of light made available by the product, not hours of light available as a result of sunshine or any other source of light.

In specific contexts, and based on evidence, this metric may serve as a proxy indicator of whether the outcome being sought by an investor or organization is occurring (the WHAT dimension of impact). 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.