Mainka at a glance
Total output 2025
> 330
€ million p.a.
Founded
1895/1949
Branches
- Lingen (head office)
- Brunsbüttel
- Gelsenkirchen
- Cologne
- Münster
- Osnabrück
- Papenburg
- Wuppertal
Mainka employees
> 750
Accident statistics
Construction projects for chemicals, energy and logistics
We plan, construct, renovate and maintain industrial buildings safely, reliably and with many years of experience. Our focus is on complex projects in sensitive industrial environments such as chemical parks, power stations, refineries, energy infrastructure and large logistics sites.
Construction of a Bipolar Converter Station in Meerbusch
For our client Siemens Energy, a bipolar converter station was constructed in Meerbusch on an area of around 13 hectares. Within a short construction period, buildings with a total floor area of approximately 30,000 square metres were completed on a turnkey basis — including planning, technical building services and coordination within a joint venture.
The project placed the highest demands on scheduling and ongoing coordination but was nevertheless delivered on time despite its complexity.
Following the successful handover of all buildings, the main construction phase has been completed and technical commissioning is prepared. In parallel, landscaping activities and the final installation of the technical areas are underway.
With this large‑scale project, we are making a strong contribution to the energy transition and demonstrating our capability in delivering demanding infrastructure projects in the energy sector.
Figures and facts:
- Earthworks
- Sewer and pipeline construction
- Road and asphalt construction
- Asphalt construction
- Turnkey construction
- Drainage systems
- Reinforced‑concrete construction
- Construction of media‑tight surfaces
- Technical building services
| Customer | Amprion / Siemens Energy |
|---|---|
| Location | Meerbusch |
| Contract value | approx. €110 million |
| Main construction period | 32 month |
Similar references
Of our more than 750 employees, around 60% are construction site personnel, whom we train regularly. On average, we devote 2% of annual working hours to training.
For whom and why?
We generate more than 90% of our turnover in the chemical, energy and specialised logistics sectors. Customers from these sectors trust in our experience because we construct complex industrial buildings reliably and safely.
