
Photovoltaic systems from consulting, planning and installation through to maintenance and inverter repair.
Hilker Solar GmbH
Rahden (headquarters) · Annaberg (repair workshop, Hilker Repair GmbH)New on Amplifa
About Hilker Solar
Hilker Solar GmbH is a photovoltaic service provider based in Rahden, East Westphalia-Lippe. Andre Hilker founded the company in 2000 as an electrical installation business; since 2004 Hilker Solar has been realizing photovoltaic systems. The range of services includes consulting, planning and installation of PV systems on the roofs of private homes, agricultural buildings and industrial halls as well as on ground-mounted solar parks, complemented by battery storage, e-mobility with the installation of wallboxes and charging stations, system monitoring, maintenance, emergency service and remote maintenance. An in-house workshop repairs inverters from the manufacturers SMA, Fronius, SolarEdge and Huawei; the Hilker Repair GmbH, spun off in 2020, operates the repair branch in Annaberg. In around 20 years, the company has completed nearly 10,000 projects with more than 100 employees. The Rahden headquarters offer administration, service, a warehouse, a showroom and, since 2023 under construction, the Hilker Forum as an exhibition, training and education center.
- Site
- Rahden
- Processes
- Planning and installation of photovoltaic systems, Installation of battery storage systems, Installation of charging stations/wallboxes for e-mobility (private and public), Maintenance and system monitoring of PV systems, Inverter repair (in-house repair workshop), Electrical installation, Service visits/emergency service and remote maintenance for PV systems, Consulting
- Materials
- Solar modules up to 500 watts, Inverters (SMA, Fronius, SolarEdge, Huawei), Battery storage (e.g. Huawei LUNA2000), Charging systems and wallboxes
- Certificates
- Monitoring system for system monitoring, Service visits with technician and trainee, Roof work by two-person installation team, Emergency service and remote maintenance, Certifications (e.g. ISO)
- Founded
- 2000
- Employees
- >100
- Industries
- Private customers (single-family houses), Agriculture, Industry, Solar parks/ground-mounted, E-mobility, Industry (industrial halls)
- 01
Consulting and field service appointment with digital object data capture
- 02
Planning of the PV system via online tool or on-site survey
- 03
Installation of modules, inverter and battery storage by installation teams
- 04
Commissioning
- 05
System monitoring via monitoring system
- 06
Maintenance, service visits, emergency service and remote maintenance
- 07
Inverter repair in the in-house workshop
Services and System Components
Solar modules up to 500 watts
Modules up to 500 Wp output for higher yield on the same roof area.
Inverters (SMA, Fronius, SolarEdge, Huawei)
Service and repair of common inverters from the manufacturers SMA, Fronius, SolarEdge and Huawei, including Huawei SUN2000.
Battery storage (e.g. Huawei LUNA2000)
Storage systems to increase self-consumption, service for models such as Huawei LUNA2000.
Charging systems and wallboxes
Charging stations for private and public areas as a building block of e-mobility.
Locations
Rahden
DEHeadquarters with administration, service, exhibition/showroom and warehouse
- Materials
- PV modules, inverters, battery storage, charging systems
- Warehouse (1,000 m², 2010, expanded in 2012 by 800 m²)
- Office building (500 m², 2018)
- Showroom in the Hilker Forum (construction start 2023)
Annaberg
DERepair workshop for inverters (since 2020 Hilker Repair GmbH)
- Inverter workshop
Project Types






Inside the production





Industries
Processes & technical limits
| Processes | Tolerance | Max. part | Weight | Lot size | Materials |
|---|---|---|---|---|---|
| Planning and installation of photovoltaic systemsAssembly | – | – | – | – | Solar modules up to 500 watts output |
| Installation of battery storage systemsAssembly | – | – | – | – | – |
| Installation of charging stations/wallboxes for e-mobility (private and public)Assembly | – | – | – | – | – |
| Maintenance and system monitoring of PV systemsTesting | – | – | – | – | – |
| Inverter repair (in-house repair workshop)Testing | – | – | – | – | – |
| Electrical installationAssembly | – | – | – | – | – |
| Service visits/emergency service and remote maintenance for PV systemsTesting | – | – | – | – | – |
5 Anlagen & Maschinen
| Machine | Manufacturer / model | Quantity | Working area | Year built | Site |
|---|---|---|---|---|---|
| Inverter (service/repair) | SMA | – | – | – | Rahden |
| Inverter (service/repair) | Fronius | – | – | – | Rahden |
| Inverter (service/repair) | SolarEdge | – | – | – | Rahden |
| Inverter (service/repair) | Huawei SUN2000 | – | – | – | Rahden |
| Battery storage | Huawei LUNA2000 | – | – | – | Rahden |
Additional services
Service and System Monitoring
Service visits are carried out by qualified technicians, installers and trainees; roof work is always performed by a two-person installation team. System monitoring takes place via a monitoring system, complemented by maintenance, emergency service and telephone remote maintenance.
| Evidence | Rahden |
|---|---|
| Monitoring system for system monitoring | |
| Service visits with technician and trainee | |
| Roof work by two-person installation team | |
| Emergency service and remote maintenance | |
| Certifications (e.g. ISO) |
History
- 2000
Andre Hilker founds Elektrotechnik-Hilker, specializing in electrical installations.
- 2004
First photovoltaic system installed.
- 2008
Move to new office in the Steinmasch, Rahden.
- 2010
Construction of an external warehouse of 1,000 m² in the new Rahden industrial area.
- 2012
Expansion of warehouse capacity by 800 m², among other things for larger solar projects such as solar parks.
- 2015
Opening of the repair workshop for inverters.
- 2018
New office building (500 m²) built in Carl-Zeiss-Straße; more than 50 employees; repair workshop branch in Annaberg.
- 2019
Comprehensive installation of charging stations for private and public areas.
- 2020
Spinning off of the repair department as Hilker Repair GmbH; more than 100 employees.
- 2023
Construction start of the Hilker Forum, which combines an exhibition with a training and education center.