Commercial & industrial

String inverters from 20 to 110 kW for rooftop and ground-mounted systems

REFUsol inverters from 20 to 110 kW with up to 10 MPPTs, certified to VDE-AR-N 4105 and EN 50549, with a 10-year warranty. Plus REFUlink for plant control and REFUview for monitoring with data hosting in Germany.

Request a projectSuitable products
REFUsol 125K-10T

What matters in commercial and industrial PV

On commercial rooftops, every square metre counts. Roof areas with different orientations, shading from rooftop equipment and limited mounting space call for flexible string design.

At the same time, the system should cover the company’s own consumption, need little maintenance and be easy to monitor remotely.

Challenges

Several roof areas

Up to 4 MPPTs in the C&I series and 10 in the 10T models allow different orientations and string lengths on one unit.

Fire safety on the roof

Arc fault detection (AFCI) is optional in the C&I series and integrated in the 10T models.

Easy commissioning

Installers can set up many models via app over Bluetooth directly at the inverter.

Own consumption in view

With REFUview, operators see output and yields in real time, with data hosting in Germany.

How REFU delivers commercial and industrial PV

Depending on the roof size, planners combine units from 20 to 110 kW. REFUlink connects the inverters to power management and the grid operator, and REFUview monitors the system centrally.

REFUsol 125K-10TREFUsol 110K-10TREFUsol 50K-4TREFUlinkREFUviewGrid operator / control room

20–110 kW

AC power per inverter

up to 10

MPPTs per inverter

up to 98.8 %

max. efficiency

10 years

Warranty

Suitable products

C&I inverters

REFUsol 125K-10T

More power for large commercial and smaller ground-mounted systems

AC power
110 kW
MPPTs
10
max. efficiency
98.6 %

REFUsol 110K-10T

For complex system layouts with many module arrays

AC power
100 kW
MPPTs
10
max. efficiency
98.6 %

REFUsol 50K-4T

Powerful for large commercial and industrial rooftops

AC power
50 kW
MPPTs
4
max. efficiency
98.8 %

REFUsol 33K-3T

More power for mid-size commercial systems and repowering

AC power
33 kW
MPPTs
3
max. efficiency
98.6 %

REFUsol 25K-3T

For replacement in existing commercial systems

AC power
25 kW
MPPTs
3
max. efficiency
98.6 %

REFUsol 20K-2T

Compact entry model for smaller commercial rooftops

AC power
20 kW
MPPTs
2
max. efficiency
98.6 %

REFUsol 20K-3T

Flexible for commercial rooftops with several roof areas

AC power
20 kW
MPPTs
3
max. efficiency
98.6 %

Battery storage

REFU 418

Compact, liquid-cooled all-in-one AC energy storage system

Capacity
418 kWh
AC power
215 kW
Cycles
8,000

REFU 261

Compact AC energy storage system

Capacity
261 kWh
AC power
125 kW
Cycles
8,000

System & monitoring

REFUlink

Central interface for PV systems and grid operators

REFUstix USB

Compact data logger for individual inverters

REFUview

Central platform for monitoring, analysis and user management

Your benefit as …

EPCs & general contractors

  • Datasheets, certificates and manuals in the download centre

    Datasheets, unit certificates, declarations of conformity and manuals are all in one place in the download centre, always in the current version.

  • Personal contacts in sales and engineering

    For system design, quotations and detailed technical questions, you talk directly to our sales team and our engineers, including for large solar parks.

  • Scalable with REFUlink and REFUview

    REFUlink connects up to 60 inverters to the control room and the grid operator, while REFUview brings all operating data together. The system grows with your plant.

Installers & electrical contractors

  • Easy commissioning

    Many models can be set up via app over Bluetooth directly at the inverter. This saves time when commissioning on commercial rooftops.

  • Technical support from Germany

    For questions about installation, settings or error messages, you can reach our technical support in Germany, personally and without detours.

  • Fits new and existing systems

    REFUsol inverters can be integrated into new and existing PV plants, and via REFUlink also together with older generations of REFU inverters.

Operators & investors

  • Real-time monitoring with REFUview

    REFUview shows the status, output and yield of your PV plant in real time, on your computer and on your smartphone. Spot deviations early and protect your yield.

  • Data hosting in Germany

    Your plant data is hosted and processed in Germany. This makes data protection and data sovereignty easier, especially for operators of critical infrastructure.

  • Technical support from Germany

    For questions about operation, faults or firmware updates, you can reach our technical support in Germany, personally and without detours.

Planners & engineers

  • Unit certificates and declarations of conformity in the download centre

    Download the evidence you need for plant design, such as unit certificates to VDE-AR-N 4105 and 4110 or EN 50549, directly and without a request.

  • Complete technical data for comparison

    Every product page shows all values from the datasheet, from the MPPT voltage range to the overvoltage category, clearly arranged by group.

  • Direct contact with engineering

    For detailed questions on grid protection, reactive power or plant control, talk directly to our engineers, without detours.

Project developers

  • Grid-compliant operation to European grid codes

    REFUsol inverters are certified to EN 50549 and the German VDE application rules. This gives you planning certainty for the grid connection of your PV project.

  • Monitoring with data hosting in Germany

    With REFUview, you keep track of the output and availability of your plants. The data is hosted and processed in Germany.

  • Complete documents for permits and grid connection

    Unit certificates, declarations of conformity and datasheets are ready in the download centre, so the plant certificate and grid connection procedure move ahead quickly.

Utilities & grid operators

  • Power control via Modbus TCP/IP and DRM

    With REFUlink, you apply active and reactive power setpoints via Modbus TCP/IP or the DRM levels 0, 30, 60 and 100 % on all connected inverters.

  • Grid-compliant operation to grid codes

    The inverters meet the requirements of EN 50549 and the German VDE application rules for connection to low- and medium-voltage grids, certified and documented.

  • Data hosting in Germany

    Operating data is hosted and processed in Germany. This supports operators of critical infrastructure with data protection and information security.

Related solutions

Repowering

Replace old inverters, meet new grid requirements, monitor everything centrally.

Learn more

Protection functions

Arc fault detection, surge and grid protection in the inverter.

Learn more

Data security

Data hosting in Germany, rights management and NIS2-ready.

Learn more

Discuss your project

Planning a commercial rooftop system? We advise you personally, directly with our engineers.

Or directly+49 7121 145 1888info@refu.com

Request a project