European specialist for utility-scale solutions
As a German manufacturer, we offer:
- German-based service and support
- 10-year warranty
- Cybersecurity and full system control
Lack of control is a risk.
Today, operators of utility and C&I facilities bear technical, regulatory, and economic responsibilities—often within complex system environments characterized by limited transparency and controllability.
Common challenges in today’s plant operations
Centralized Control and Access
- Centralized control across all inverters is often not consistently available
Parameters are accessible only locally or with restrictions
Regulatory Pressure & Liability
- Requirements such as NIS2, grid codes, and ISO
- Operators are responsible for grid compliance and security
Dependence on external systems
- Cloud platforms outside the EU
- Limited access to your own data
Operational processes
- Gradual Commissioning
- On-site visits for minor adjustments
Regulation, safety, and oversight are the focus of the trade press.
Industry publications and regulatory developments make it clear: operators of large-scale PV systems are facing growing pressure—technically, economically, and in terms of safety. The question is no longer whether—but how—you monitor your system.
With REFU, you can rely on a solution today that intelligently integrates hardware and software to make your system future-proof.
Remote access, security risks, and a lack of control are simply not options for us.
pv magazine | Jan. 2026
The debate around cyber risks and critical infrastructure is reaching the inverter industry.
Security and origin-related issues are increasingly being evaluated from a regulatory perspective.
pv magazine | Jan. 2026
With the implementation of NIS2, the requirements for operators of energy-related infrastructures are increasing.
Documentation, access control, and system architecture are becoming auditable and subject to mandatory reporting.
Solarserver | Jan. 2026
PV systems are networked infrastructures with an expanding attack surface.
Security concepts therefore need to be designed at the system level rather than solely at the component level.
Performance and control go hand in hand
Consistent performance and complete control must be viewed as a unified system. This is exactly where REFU comes in:
The right setup makes all the difference.
Every system has different requirements in terms of control, integration, and operation. We help you identify the right solution for your existing or planned infrastructure.
Together, we’ll determine how to integrate the inverters, system platform, and control system into your project in a way that makes sense—based on sound technical principles and without unnecessary complexity.
Here's how the system is used in practice
In daily operation, the inverters are centrally controlled and networked with each other via REFUlink.
Adjustments are made directly via remote access, while REFUview displays all operational data in real time and continuously monitors the system.
REFU systems are in use in real-world plant operations and reliably control inverter arrays in utility and industrial projects during daily operations.
Central control with REFUlink
REFUlink handles the central control and communication of all inverters in the system—regardless of external infrastructure.
- Centralized integration of all REFU devices into a single system
- Remote configuration and adjustments without on-site visits
- Auto Commissioning for fast and standardized commissioning
- System operation under your control – without external access or dependencies on third-party platforms
Monitoring and Control with REFUview
REFUview displays all relevant operational data and enables centralized monitoring and control of the entire system.
- Centralized system control over all inverters and plant areas
- System operation under your control—without external access or dependencies on third-party platforms
- Remote configuration of all inverters directly from the office
- Remote updates for continuously up-to-date systems—without on-site visits
- Transparent access to all operational and performance data in real time
How performance and system control work together in real utility operations
How performance and system control work together in real utility operations
“The transition to REFU was implemented without delays. Direct access to technical support and the reliable implementation of all regulatory requirements were key factors for the success of this project.”
Project Manager
Utility solar park in Germany – 5.6 MW successfully implemented under new regulatory requirements
PROJEKT
Rendsburg, Germany
LEISTUNG
5,6 MW
WECHSELRICHTER
16 × REFUsol 350K
INTEGRATION
REFUlink + REFUview
A 5.6 MW utility-scale solar park in Rendsburg was successfully commissioned in early 2026. During the planning phase, the operator decided to switch from an international supplier to REFU due to increasing regulatory requirements, the need for full system control and the preference for a German-based solution.
The system design was adapted within a short timeframe and implemented without delaying the overall project schedule.
Reliable implementation under real utility conditions
During commissioning, a third-party plant controller (EZA controller) was not yet fully operational. A REFU service engineer supported directly on site, identified a wiring issue in the communication bus and ensured immediate system readiness.
With REFUlink and REFUview, all grid operator and certification-relevant parameters were centrally configured and documented. The plant was successfully certified and is now operating reliably.
- Compliance with regulatory requirements (e.g. NIS2) and full system control
- Fast system redesign and implementation without project delays
- Direct technical support with a dedicated contact and phone access
- Central parameterization and support during the certification process
- Seamless integration of existing and new inverter systems
Why choose REFU for your utility project?
Our inverter solutions are specifically designed for use in utility-scale and large-scale installations.
They enable maximum efficiency, full system control, and seamless integration into both existing and new infrastructures.
German technology for critical infrastructure
The highest standards in safety, reliability, and regulatory compliance
Full system control and integration
Seamless integration into SCADA, EMS, and monitoring systems for maximum transparency and controllability
Maximum yields and long-term profitability
Optimized performance for maximum energy yields and a consistently strong cost-benefit ratio
A secure and sustainable energy supply
Rugged systems designed for long-term operation under demanding conditions
Inverter solutions for utilities and critical infrastructure
Our inverters are designed for use in utility-scale and large-scale installations—offering maximum efficiency, high system voltage, and full integration into your infrastructure.
This enables flexible system designs and maximum efficiency while ensuring high operational reliability.
