refer GmbH, based in Leverkusen (HRB 86648), is a joint company owned by AVEA GmbH & Co. KG (50%), Stadtwerke Bonn GmbH (25%) and MVA Müllverwertungsanlage Bonn GmbH (25%). Its purpose is the economically and technically optimal recovery and disposal of residual materials from thermal treatment (e.g. grate ash residues, filter dusts and other wastes and products from flue gas cleaning) on behalf of the municipal shareholders. The company provides only operational services while overhead services are provided by the shareholders. In the 2024 fiscal year refer generated revenues of 10,967 T€ and a net profit of 600 T€; the ash processing plant operated continuously and approximately 128,000 tonnes of slag were delivered.
die wirtschaftlich/technisch optimale Verwertung und Beseitigung von Reststoffen (z.B. verbrennungsrückständige Rostaschen, Filterstäube und sonstige aus der Rauchgasreinigung anfallende Abfälle und Produkte), die im Rahmen der thermischen Behandlung in den Abfallbehandlungs- und Verwertungsanlagen der kommunalen Gesellschafter auf deren Gebiet anfallen bzw. aus diesen herrühren.
Converted using the official Destatis and Eurostat correspondence tables; ISIC Rev. 4 is the United Nations' international industry classification.
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Source: German Commercial Register (Handelsregister) Köln Local Court, HRB 86648 (as of 31 October 2026)
| Name | Type | City |
|---|---|---|
| Benedikt Stapper | Geschäftsführer(in) | Lüdinghausen |
| Rebecca Winkler | Geschäftsführer(in) | Odenthal |
Source: German Commercial Register (Handelsregister) Köln Local Court, HRB 86648 (as of 31 October 2026)
| Date | Event Type | Event |
|---|---|---|
| 02.02.2016 | Company Name Registered | refer GmbH |
| 02.02.2016 | Registered Seat | Leverkusen |
| 02.02.2016 | Business Address Registered | Im Eisholz 3, 51373 Leverkusen |
| Date | Type | Change | Total Capital |
|---|---|---|---|
| 02.02.2016 | Share Capital Set | — | 50.000 € |
Source: German Commercial Register (Handelsregister) Köln Local Court, HRB 86648 (as of 31 October 2026)
| Year | Revenue | Profit | Balance | Employees |
|---|---|---|---|---|
| 2024 | €10,966,739 | €600,660 | €10,497,606 | — |
| 2023 | €9,796,183 | €255,272 | €11,514,053 | — |
| 2022 | €10,815,327 | €271,012 | €11,961,086 | — |
| 2021 | €7,396,072 | €73,615 | €11,148,450 | — |
| 2020 | €5,446,529 | €358,665 | €3,483,189 | — |
| 2019 | €4,822,839 | €160,924 | €2,293,017 | — |
| 2018 | €4,893,980 | €423,819 | €1,587,955 | — |
| 2017 | €4,740,321 | €273,206 | €1,254,636 | — |
| 2016 | €4,384,773 | €83,708 | €837,403 | — |
| 2015 | €0 | — | €50,000 | — |
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Source: German Commercial Register (Handelsregister) Köln Local Court, HRB 86648 (as of 31 October 2026)
| Cost type | Amount | Share |
|---|---|---|
| Personnel Costs | €901,095 | 9.9% |
| Material Costs | €7,107,239 | 78.2% |
| Depreciation | €1,010,846 | 11.1% |
| Interest & Similar | €73,614 | 0.8% |