The TÜV NORD certificate
Our green electricity products are certified by TÜV NORD and reviewed annually on the basis of a catalogue of criteria.

The TÜV NORD certificate and the associated test mark confirm that the electricity we offer comes entirely from renewable energies. To verify this, the origin of the electricity is checked using guarantees of origin in the legally required register of the German Environment Agency. Through TÜV NORD certification, we also demonstrate that we support the further expansion of renewable energies, for example through operating or investing in wind or solar plants, and that environmental protection is fundamentally important to us. In addition, the annual certification reviews the transparent and open communication of the green electricity criteria to our end customers.
| Name | Status | File type | Action |
|---|---|---|---|
| TÜV NORD certificate Grünwelt Wärmestrom GmbH | Year 2025 | View | |
| TÜV NORD certificate Grünwelt Wärmestrom GmbH | Year 2024 | View | |
| TÜV NORD certificate Grünwelt Wärmestrom GmbH | Year 2023 | View | |
| TÜV NORD certificate Grünwelt Wärmestrom GmbH | Year 2022 | View | |
| TÜV NORD certificate Grünwelt Wärmestrom GmbH | Year 2020 | View | |
| TÜV NORD certificate Grünwelt Wärmestrom GmbH | Year 2019 | View | |
| TÜV NORD certificate Grünwelt Wärmestrom GmbH | Year 2018 | View | |
| TÜV NORD certificate Grünwelt Wärmestrom GmbH | Year 2017 | View |






