CO₂-/Wasser-Reporting + erneuerbare Energiequellen
Why important?
Transparent measurement and disclosure of CO2e and water, plus sourcing of renewable/low-carbon energy.
How measured?
Scale 0–5 + N/A:
- 0 = No information on CO₂/water/renewables.
- 1 = General commitments only, without KPIs/reporting.
- 2 = Renewable energy mentioned (e.g. "100% green electricity"), but no consistent CO₂/water reporting.
- 3 = CO₂ reporting in place (at least scope 1–2) and renewables; water only qualitative/partial.
- 4 = Detailed CO₂ reporting (e.g. incl. scope 3 or methodologically transparent) + renewables; water KPIs/targets partial.
- 5 = Comprehensive ESG reporting (scope 1–3) incl. renewables (share/methodology) + water KPIs/targets, updated regularly.
- N/A = Not assessed / no reliable evidence available.
Sources / Evidence
Links are starting points for the assessment (public unless marked otherwise). For RFP/audit purposes, please verify the scope (region/service/operating model).
- https://sustainability.aboutamazon.com/products-services/aws-cloud
- https://www.ionos-group.com/fileadmin/Publications/Berichte/IONOS_Group_SE_Sustainability_Report_2024.pdf
- https://stackit.com/en/learn/knowledge/cloud/sustainability
- https://corporate.ovhcloud.com/sites/default/files/2024-12/carbon_balance_2024_ovhcloud-en.pdf
- https://www.t-cloud-public.com/en/benefits/sustainability
- https://www.oracle.com/cloud/sustainability/
- https://www.plusserver.com/nachhaltigkeit/
- https://upcloud.com/esg-program/
- https://www.exoscale.com/sustainability/
- https://docs.hetzner.com/general/company-and-policy/sustainability-at-hetzner/
- https://www.scaleway.com/en/environmental-leadership/
- https://www.microsoft.com/en-us/corporate-responsibility/sustainability/reports
- https://www.noris.de/wp-content/uploads/ESG-Nachhaltigkeitsbericht-norisnetwork_2023.pdf
- https://www.syseleven.de/ueber-uns/unsere-rechenzentren/
- https://www.bertelsmann.com/news-and-media/news/first-sovereign-cloud-platform-for-the-german-administration-on-the-home-straight.jsp
Validation questions (RFP)
These questions help close evidence gaps or verify claims, including scope.
- How are CO₂/GHG emissions (scope 1–3), energy sourcing (share of renewables, evidence such as GOs/RECs/PPAs) and water use (e.g. WUE) measured and published? Is there a base year, target pathway and external assurance (if any)?
Scores comparison
| Providers | Score | |
|---|---|---|
| AWS European Sovereign Cloud | 5.0 | |
| IONOS Cloud | 5.0 | |
| Scaleway | 5.0 | |
| Microsoft Sovereign Cloud | 5.0 | |
| Infomaniak Public Cloud | 5.0 | 200% CO₂ offsetting (myclimate). 100% renewable energy. Impact Report 2024. ISO 14001. B Corp (2025). Own solar installations. Hardware lifecycle up to 15 years. Canton of Geneva sustainability award (2015, 2023). |
| OVHcloud Public Cloud (inkl. SecNumCloud) | 4.0 | |
| T Cloud Public | 4.0 | |
| Oracle EU Sovereign Cloud | 4.0 | |
| noris Sovereign Cloud | 4.0 | |
| STACKIT | 3.0 | |
| pluscloud open | 3.0 | |
| UpCloud | 3.0 | |
| Exoscale | 3.0 | |
| Hetzner Cloud | 3.0 | |
| Delos Cloud | 3.0 | |
| SysEleven OpenStack Cloud | 3.0 | |
| Cloud Temple Trusted Cloud | 1.0 | CSR engagement mentioned. No detailed CO₂/water/renewable reports public. No ESG report documented. |