Planning, installation and maintenance of photovoltaic systems, battery storage and wallboxes in Northern Germany
fri GmbH & Co. KG
Roggentin (headquarters) · Schwerin · Neustadt · Zeuthen · Schöneiche · BielefeldNew on Amplifa
About fri Energy
fri GmbH & Co. KG is a master-certified specialist company for solar technology headquartered in Roggentin near Rostock and part of the Sonnenexpert corporate group. The company plans, supplies and installs rooftop photovoltaic systems, battery storage (including Tesla Powerwall 3P) and wallboxes for private customers, commercial clients, public buildings such as schools, sports halls and daycare centres, as well as housing associations and municipalities. The service portfolio includes solar consulting and system planning including structural load checking, installation of modules and electrical technology, registration with the energy supplier and in the Marktstammdatenregister (market master data register), as well as maintenance with visual inspection, functional tests, DC/AC measurements and thermography via thermal drone. Further offerings include drone surveying, commercial systems, tenant electricity projects, tender processing for public and commercial projects, and financing and leasing models. Components from manufacturers such as Tesla and Huawei as well as glass/glass solar modules with 455 watt output are used. As a certified Tesla Energy Partner, the company works with its own installation teams and a network of trade partners.
- Site
- Roggentin
- Processes
- Installation of photovoltaic systems (rooftop), Installation of solar storage systems, Installation of wallboxes / charging infrastructure, Maintenance of solar systems (visual inspection, functional tests, DC/AC measurements, cleaning), Thermography of PV modules via thermal drone, Drone surveying, Solar consulting and system planning (incl. structural load checking), Commercial systems and tenant electricity projects
- Materials
- Full Black Premium solar modules / 455 watts (glass/glass), Full Black Premium 455 W solar modules (glass/glass), Tesla Powerwall 3P, Hybrid inverters (including Huawei)
- Certificates
- ISO 9001:2015
- Industries
- Private customers (B2C), single-family homes, Commercial, Public buildings (schools, sports halls, daycare centres, community halls, fire, Housing associations, Municipalities
- 01
Solar consulting and on-site analysis
- 02
System planning incl. structural load checking
- 03
Quotation and tender processing
- 04
Delivery and installation of the PV system
- 05
Electrical installation and commissioning
- 06
Registration with the energy supplier and the market master data register
- 07
Maintenance, thermography and support
Components & Technology
Full Black Premium 455 W solar modules (glass/glass)
Glass/glass modules with 455 watts for rooftop PV systems with 20 years component warranty.
Tesla Powerwall 3P
Three-phase battery storage with integrated inverter, backup power capability and outdoor installation.
Hybrid inverters (including Huawei)
Efficiently converts solar power and integrates storage and system technology.
Locations
Roggentin (Rostock)
DEHeadquarters, new location since September 2026
- Materials
- PV modules, storage, inverters
- Thermal drone (DJI RC Pro Enterprise Controller)
- Benning installation tester 050422
Schwerin
DELocation for Mecklenburg-Vorpommern
Neustadt
DELocation for Schleswig-Holstein
Zeuthen
DELocation for Brandenburg/near Berlin
Schöneiche
DELocation for Brandenburg/near Berlin
Bielefeld
DELocation (Herforder Str. 69)
Industries
Processes & technical limits
| Processes | Tolerance | Max. part | Weight | Lot size | Materials |
|---|---|---|---|---|---|
| Installation of photovoltaic systems (rooftop)Assembly | – | – | – | – | Full Black Premium solar modules / 455 watts, Glass/glass solar modules, Hybrid inverters |
| Installation of solar storage systemsAssembly | – | – | – | – | Tesla Powerwall 3P, 5 kWh storage, 10 kWh storage |
| Installation of wallboxes / charging infrastructureAssembly | – | – | – | – | – |
| Maintenance of solar systems (visual inspection, functional tests, DC/AC measurements, cleaning)Testing | – | – | – | – | – |
| Thermography of PV modules via thermal droneTesting | – | – | – | – | – |
| Drone surveyingEngineering | – | – | – | – | – |
| Solar consulting and system planning (incl. structural load checking)Engineering | – | – | – | – | – |
| Commercial systems and tenant electricity projectsAssembly | – | – | – | – | – |
| Solar tenders for public buildings and commercial clients (review, planning, quotation,Engineering | – | – | – | – | – |
| Operational management for photovoltaic systemsEngineering | – | – | – | – | – |
| Electrical cabling and installation of electrical technology (inverters, sub-distribution,Assembly | – | – | – | – | – |
3 Anlagen & Maschinen
| Machine | Manufacturer / model | Quantity | Working area | Year built | Site |
|---|---|---|---|---|---|
| Benning installation tester (DC measurements in accordance with VDE 0126-23 / 0126-24) | Benning Installationstester 050422 | – | – | – | – |
| Thermal drone with DJI RC Pro Enterprise Controller | DJI RC Pro Enterprise Controller | – | – | – | – |
| Battery storage with integrated inverter (three-phase, backup power capability, outdoor | Tesla Powerwall 3P | – | – | – | – |
Additional services
Reference customers
Quality
As a master-certified specialist company, fri Energy works with certified professionals and tested systems. Maintenance and testing are carried out, among other methods, with the Benning installation tester 050422 in accordance with VDE 0126-23/0126-24, as well as thermography via thermal drone.
| Evidence | Roggentin |
|---|---|
| ISO 9001:2015 |
History
- 2024
ISO 9001 certification valid from 02.07.2024 (certificate q-24-25833, GUTcert).
- 2026
Official opening of the new Roggentin location on 16 September 2026; re-certification to ISO 9001 (Q-26-23564b/2, valid until 17.04.2029).
Receipt of Tesla Energy certification as a certified installation company (Tesla Energy Partner).