# Timeline

The GRESB Assessment cycle follows a structured set of milestones designed to support participants throughout the reporting process — from preparation and submission to results review and performance planning. Please check back periodically to ensure you do not miss any important deadlines.

The GRESB Data Center Assessment operates year-round. Participants may resubmit their assessment as needed, and an updated Insights Report will be generated once GRESB completes validation and scoring of the submitted response.

### GRESB Dates

Key dates for the **2026** reporting cycle:

<table><thead><tr><th width="230.75927734375"><select><option value="t50IQucFE2Ck" label="Year-Round" color="blue"></option><option value="FN8R9WOrPj6K" label="September" color="blue"></option><option value="SlP9msLIDXbQ" label="January" color="blue"></option><option value="ucwVRY7jzplu" label="May" color="blue"></option><option value="tbPI1TtQObKY" label="August" color="blue"></option><option value="4HNrl1uTT0tD" label="Year-Round (starting in August)" color="blue"></option><option value="9P1aqjOW3ntX" label="July" color="blue"></option><option value="7ndXibfeYG9w" label="October" color="blue"></option><option value="NEH7tWkDZ7dA" label="November" color="blue"></option><option value="cGeMmYbbk7t5" label="Year-Round (starting in July)" color="blue"></option><option value="sGJ8nHwyDKHY" label="Year-Round*" color="blue"></option></select></th><th width="166.5740966796875"></th><th></th></tr></thead><tbody><tr><td><span data-option="ucwVRY7jzplu">May</span></td><td><strong>Assessment Development</strong></td><td>Standards and GRESB Guides are released.</td></tr><tr><td><span data-option="9P1aqjOW3ntX">July</span></td><td><strong>Assessment Opening</strong></td><td><strong>July 15:</strong> The assessment opens for participants.</td></tr><tr><td><span data-option="NEH7tWkDZ7dA">November</span></td><td><strong>Benchmark Report</strong></td><td>Benchmark results are released to Participants and made available in the <a href="https://portal.gresb.com/log_in">GRESB Portal</a>.</td></tr><tr><td><span data-option="NEH7tWkDZ7dA">November</span></td><td><strong>Public Results</strong></td><td>Public results events.</td></tr><tr><td><span data-option="t50IQucFE2Ck">Year-Round</span></td><td><strong>Onboarding Service</strong></td><td><p>Starting in <strong>July</strong>, new participants may request an onboarding call.</p><p><br>Please contact your Account Manager to schedule.</p></td></tr><tr><td><span data-option="sGJ8nHwyDKHY">Year-Round*</span></td><td><strong>Resubmission</strong></td><td>Starting in <strong>August:</strong> Participants may resubmit their assessment as needed.</td></tr><tr><td><span data-option="sGJ8nHwyDKHY">Year-Round*</span></td><td><strong>Insights Report</strong></td><td>Starting in <strong>August:</strong> Insights Reports become available following submission and completion of validation and scoring.<br><br>Results available in the <a href="https://portal.gresb.com/log_in">GRESB Portal</a>.</td></tr></tbody></table>

{% hint style="info" %}
**Year-Round\*: In 2026, Resubmission and Insights Reports become available starting in August.**

\
From this date onwards, participants may resubmit their assessment as needed and will receive an updated Insights Report within 4 weeks of each submission.
{% endhint %}

Key dates for **future** reporting cycles:

The assessment will be available year-round with on-demand insights reports and fixed dates for the Benchmark. This means participants will be able to submit and re-submit as from the start of the reporting period, with an insights report being made available within a maximum of 4 weeks from the submission.


---

# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://guides.gresb.com/data-center-assessment/1.-getting-started/timeline.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.