Cartis diligence evidence schedule
Green Mountain FRA-Mainz / Green Rocks Campus
PRJ-0522 · Site · Ingelheimer Aue, Mainz, Rhineland-Palatinate, Germany
Record last updated Oct 28, 2026
Scope and capacity
Green Mountain's current FRA-Mainz operator page, checked October 28, 2026, states that the entire 54 MW facility is contracted to one hyperscale client. This is a leasing statement, not confirmation of operating capacity; the earlier 36 MW agreement remains part of the project's history. Green Mountain and KMW are building a three-building data-center campus on Ingelheimer Aue in Mainz. Current sponsor pages disagree between 54 MW and 80 MW, and the first section is targeted for Q4 2026.
Headline: Not established in published records
Numbers refer to their stated physical boundaries and are not added together. Source dates, claim dates and record updates have different meanings. Missing dates and locators are not inferred.
Claims and exhibit sources
Jump to a claim (8)
Ready for service target · Q4 2026
Forecast · Green Mountain FRA-Mainz / Green Rocks Campus (Project)
Claim 47498 · Recorded claim type: Forecast · Review: Approved · Claim date: Aug 12, 2026
- FRA-Mainz data center
Green Mountain · Document date: Not stated · Primary
Source reference: SRC-7035 · Fact sheet · Recorded authority: Party primary
Source URL
https://greenmountain.no/data-center/fra-mainz/
https://greenmountain.no/data-center/fra-mainz/
- Green Rocks — a green data center on Ingelheimer Aue
KMW · Document date: Not stated · Primary
Source reference: SRC-7037 · News report · Recorded authority: Secondary
Source URL
https://www.kmw-ag.de/rechenzentrum/
https://www.kmw-ag.de/rechenzentrum/
Batch 28 — Assertions
Document date: Not stated · Primary
Source reference: SRC-2607
No public source link
Milestone transaction close · Green Mountain and KMW form 50:50 project company
Actual · Green Mountain FRA-Mainz / Green Rocks Campus (Project)
Claim 47519 · Recorded claim type: Actual · Review: Approved · Claim date: Mar 30, 2023
- KMW and Green Mountain build data center on Ingelheimer Aue
KMW · Document date: Mar 30, 2023 · Primary
Source reference: SRC-7036 · Government record · Recorded authority: Official primary
Source URL
https://www.kmw-ag.de/kmw-und-green-mountain-bauen-rechenzentrum-auf-ingelheimer-aue/
https://www.kmw-ag.de/kmw-und-green-mountain-bauen-rechenzentrum-auf-ingelheimer-aue/
Batch 28 — Assertions
Document date: Not stated · Primary
Source reference: SRC-2607
No public source link
Milestone construction start · Official construction start marked
Actual · Green Mountain FRA-Mainz / Green Rocks Campus (Project)
Claim 47520 · Recorded claim type: Actual · Review: Approved · Claim date: Oct 30, 2023
- Green Mountain and KMW break ground on sustainable Mainz data-center campus
Green Mountain · Document date: Oct 30, 2023 · Primary
Source reference: SRC-7032 · Company announcement · Recorded authority: Party primary
Source URL
https://greenmountain.no/green-mountain-and-kmw-breaks-ground-on-data-center/
https://greenmountain.no/green-mountain-and-kmw-breaks-ground-on-data-center/
Batch 28 — Assertions
Document date: Not stated · Primary
Source reference: SRC-2607
No public source link
Milestone construction progress · Campus topping out milestone
Actual · Green Mountain FRA-Mainz / Green Rocks Campus (Project)
Claim 47521 · Recorded claim type: Actual · Review: Approved · Claim date: Feb 7, 2025
- Topping-out ceremony at the FRA-Mainz data center
Green Mountain · Document date: Feb 7, 2025 · Primary
Source reference: SRC-7033 · Company announcement · Recorded authority: Party primary
Source URL
https://press-en.greenmountain.no/pressreleases/topping-out-ceremony-at-the-fra-mainz-data-center-in-frankfurt-3368708
https://press-en.greenmountain.no/pressreleases/topping-out-ceremony-at-the-fra-mainz-data-center-in-frankfurt-3368708
Batch 28 — Assertions
Document date: Not stated · Primary
Source reference: SRC-2607
No public source link
Milestone customer commitment · 36 MW long term tenant agreement announced
Actual · Green Mountain FRA-Mainz / Green Rocks Campus (Project)
Claim 47522 · Recorded claim type: Actual · Review: Approved · Claim date: Sep 1, 2025
- Green Mountain and KMW secure 36 MW anchor tenant for FRA-Mainz
Green Mountain · Document date: Sep 1, 2025 · Primary
Source reference: SRC-7034 · Company announcement · Recorded authority: Party primary
Source URL
https://greenmountain.no/anchor-tenant-for-fra-mainz/
https://greenmountain.no/anchor-tenant-for-fra-mainz/
Batch 28 — Assertions
Document date: Not stated · Primary
Source reference: SRC-2607
No public source link
Milestone construction start · Building 2 construction begins
Actual · Green Mountain FRA-Mainz / Green Rocks Campus (Project)
Claim 47523 · Recorded claim type: Actual · Review: Approved · Claim date: Jan 21, 2026
- Second construction section of Green Rocks data center begins
KMW · Document date: Jan 21, 2026 · Primary
Source reference: SRC-7038 · News report · Recorded authority: Secondary
Source URL
https://www.kmw-ag.de/zweiter-bauabschnitt-des-green-rocks/
https://www.kmw-ag.de/zweiter-bauabschnitt-des-green-rocks/
Batch 28 — Assertions
Document date: Not stated · Primary
Source reference: SRC-2607
No public source link
Milestone ready for service target · Current sponsor/utility target
Actual · Green Mountain FRA-Mainz / Green Rocks Campus (Project)
Claim 47524 · Recorded claim type: Actual · Review: Approved · Claim date: Dec 31, 2026
- FRA-Mainz data center
Green Mountain · Document date: Not stated · Primary
Source reference: SRC-7035 · Fact sheet · Recorded authority: Party primary
Source URL
https://greenmountain.no/data-center/fra-mainz/
https://greenmountain.no/data-center/fra-mainz/
- Green Rocks — a green data center on Ingelheimer Aue
KMW · Document date: Not stated · Primary
Source reference: SRC-7037 · News report · Recorded authority: Secondary
Source URL
https://www.kmw-ag.de/rechenzentrum/
https://www.kmw-ag.de/rechenzentrum/
Batch 28 — Assertions
Document date: Not stated · Primary
Source reference: SRC-2607
No public source link
Milestone permit approved · 54 MW emergency power plant approved
Actual · Green Mountain FRA-Mainz / Green Rocks Campus (Project)
Claim 47525 · Recorded claim type: Actual · Review: Approved · Claim date: Jul 20, 2026
- Approval granted for KMW motor power plant on Ingelheimer Aue
KMW · Document date: Jul 20, 2026 · Primary
Source reference: SRC-7039 · Government record · Recorded authority: Official primary
Source URL
https://www.kmw-ag.de/genehmigung-motorenkraftwerk/
https://www.kmw-ag.de/genehmigung-motorenkraftwerk/
Batch 28 — Assertions
Document date: Not stated · Primary
Source reference: SRC-2607
No public source link
Counterparties and capital
Azrieli Group · Investor · CMP-1233
Green Mountain · Operator · CMP-1230
Green Mountain KMW Data Center GmbH · Owner · CMP-1232
Groß & Partner · Contractor · CMP-1236
Undisclosed international hyperscale tenant · Customer · CMP-1239
This schedule captures public Cartis research. It is not a title, lien or legal-opinion report. Document page/section locators and claim review timestamps are included only when published; this version has no separate locator or claim-review-time feed.