> For the complete documentation index, see [llms.txt](https://guides.gresb.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://guides.gresb.com/publicdisclosure/completing-the-assessment/2026-public-disclosure-guidance/implementation/d13-sustainability-initiatives-and-or-case-studies-that-relate-to-the-entity.md).
# D13: Sustainability Initiatives and/or Case Studies that Relate to the Entity
Cover image
:bullseye: Maximum Score
3 points
:building-columns: Pillar
Environmental
:tag: Topic
Implementation & Measurement
***
**Is the entity able to disclose sustainability initiatives and/or case studies that relate to the entity?**
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## Assessment Instructions
Intent: What is the purpose of this indicator?
This indicator intends to assess the entity's disclosure of sustainability-related case studies and/or initiatives. These help to showcase the entity's ability to achieve positive sustainability outcomes through its core business operations.
Input: How do I complete this indicator?
Select yes or no. If yes, disclose where the online information can be found.
### Terminology
**Disclosure**
> The act of making information or data readily accessible and available to all interested individuals and institutions. Disclosure does not need to be public, but must be external to the reporting entity and cannot be an internal and/or ad hoc communication within the participating entity.
**Sustainability case study**
> A report or summary of the efforts undertaken by the entity to make an individual asset or portfolio more sustainable, describing the efforts undertaken and results of these actions, such as environmental resources reduced, or (potential) economic gains.
**Sustainability initiative**
> A cohesive program, action or project, that displays the entity’s leadership efforts, setting it apart from other entities (e.g. research publications, philanthropic efforts, or unique related innovations).
Validation: What evidence is required?
**Evidence:** URL. Ensure that the hyperlink is not outdated and the relevant page is directly accessible. It is possible to provide multiple hyperlinks.
Points will be awarded if the constituent can provide:
* One or more case studies that show a clear link between sustainability-related efforts and positive impacts (either financially or on stakeholders)
* A unique sustainability initiative undertaken by the organization. This can be in the shape of a project, charity drive, or research publications.
The above can be part of the documents D1-D3 or any other stand-alone public document that a constituent may disclose.
A best practice sustainability initiative or case study includes:
* A detailed overview of how the sustainability initiative brings clear added value to the organization’s core business and works towards providing a sustainable competitive advantage.
* Case studies that detail sustainable asset improvements and present quantitative outcomes.
## Scoring
Scoring: How does GRESB score this indicator?
The answer options are validated by using the hyperlink(s) collected by GRESB or provided by the constituent. Points are contingent upon the validity of the disclosure.
***
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