Company
Company
Specialist contractor from Hamburg-Bergedorf – in civil works since 2011.
1Origins
- 2011 · Founded in Bergedorf
- Four trades
- Own crews and equipment
- Based in Hamburg-Bergedorf
Kalwer Netzbau was founded in Bergedorf in 2011 as a civil works contractor. Trenches and cable routes grew into fibre house connections, fibre installation and rapid charging parks – the photos in the site diary show the sites of recent years.
We build with our own crews and equipment, for network operators, general contractors, municipalities and charging infrastructure operators in Hamburg and the surrounding area.
2Chronicle
| Year | Event | Details |
|---|---|---|
| 2011 | Founded | Kalwer Netzbau starts work in Bergedorf – civil works is the first trade. |
| 2022 | Fibre in Großhansdorf | Cable trenches, microduct bundles and surfaces in the Stormarn district. |
| 2023 | Manufacturer training | Training for rapid charging stations, certificate of 14 November 2023. |
| 2024 | Rapid charging park in Neu Wulmstorf | Building the charging park and testing at the distribution. |
| 2025 | Fibre in Bergedorf | Splicing in the street cabinet. |
3Capacity
- trades from a single source
- 4
- in civil works – since the company was founded in Bergedorf
- 2011
- crews
- 5
- staff on site
- 26
- vehicles and excavators
- 14
4Equipment
| Equipment | Use | Number / type |
|---|---|---|
| Tipper truck | Material, spoil, transport | 4 |
| Mini excavator | Trenches and house connections | 6 |
| Plate compactor and rammer | Compacting the backfill | 9 |
| Barrier equipment | Beacons, barriers, signage | for 5 sites |
| Blowing equipment with drum stand | Blowing microcable | 2 |
| Splicing tent and splicer | Splicing at the cabinet | 3 |
| Electrical test equipment | Tests at distribution and charging park | 2 |
5Certificate
Certificate of 14 November 2023
Manufacturer training in rapid charging technology
Jens Kalwer
Jens Kalwer has completed the manufacturer's training for rapid charging stations: installation, commissioning and annual preventive maintenance of 150 and 300 kW stations as well as power unit upgrades.
Further certificates: tax exemption certificate (§ 48b EStG), traffic management to MVAS, prequalification
6Contact
- Owner and contact person
- Jens Kalwer
j.kalwer@kalwer-netzbau.example - Site management and further contacts
- Site management for civil works and fibre, and for fibre installation and e-mobility, reachable via the office
- Phone
- 040 66969 120 · Mobile 040 66969 121
Contact
Request a project
Send us your bill of quantities, route plan or simply location and scope. We will get back to you personally.
- Contractor
- Kalwer Netzbau, Bergedorf
- Phone
- 040 66969 120
- Mobile
- 040 66969 121
- 040 66969 121
- Contact person
- Jens Kalwer · j.kalwer@kalwer-netzbau.example
- Working hours
- Monday to Friday, 8 am – 5 pm