Repowering or repair?
We do both.
Aging inverters, rising failure risks, and new grid requirements call for action.
The key is finding the solution that makes sense both technically and economically in the long term.
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Make the most of existing systems – instead of rebuilding from scratch
Many PV systems today consist of multiple inverter generations and evolved system structures.
Repowering is not just about replacement – it’s about intelligently integrating existing and new components.
REFUlink connects existing and new systems, enabling centralized control and monitoring via REFUview – regardless of the system architecture.
The right decision for sustainable PV systems
REFU stands for durable, sustainable, and high-performance PV systems.
Our approach is simple: we help you make the most technically and economically sound decision – whether to repair or repower.
With decades of experience in power electronics, we combine deep expertise with a clear focus on efficiency, reliability, and the long-term performance of your system.
Technical support from experienced engineers – from analysis to system design
1 to 1 replacement solutions for existing systems (e.g. 20 kW → 20 kW)
Flexible repowering concepts (e.g. 2-to-1 or 3-to-1 system configurations)
Trusted service partners and repair centers
Repair or repowering – when does each make sense?
Not every system needs to be replaced.
The key is choosing the solution that makes sense both technically and economically in the long term.
Repair makes sense when:
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repair costs are significantly lower than replacement
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a lifetime extension of several years can realistically be achieved
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no critical components are heavily aged or at risk of failure
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a stable and cost-efficient short-term solution is needed
Repowering makes sense when:
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repair costs approach the level of a new investment
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efficiency and energy yield should be improved
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new grid requirements must be met
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downtime should be reduced and availability increased
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a long-term, future-proof solution is required
The right solution for your system
Whether repair or repowering – we offer solutions for every starting point and support you from analysis through to implementation.
Repair & Service
replacement of individual components
technical analysis and fault diagnostics
fast availability of replacement units
support from experienced service technicians
Our service partners
Certified partners for fast and reliable repairs
Repowering & Modernization
replacement and expansion of existing systems
integration of new inverter generations
optimization of performance and efficiency
adaptation to current grid requirements
The right inverters for every application
Our inverters are specifically designed for repowering projects and can be easily integrated into existing systems.
They enable both simple replacement and targeted system optimization.
REFUsol 20K-2T/3T
New flexibility meets compatibility.
REFUsol 25K/33K-3T
Red at heart, green in our goals.
REFUsol 50K-4T
The control center of tomorrow.
REFUsol 110K-10T
Innovation that flows.
REFUsol 125K-10T
Innovation in motion.
Here's what repowering with REFU offers you
Our inverters are specifically designed for repowering projects and can be easily integrated into existing systems.
They enable both simple replacement and targeted system optimization.
German technology meeting the highest standards
Highest standards, safety, and reliability
Modern and efficient system solutions
Smart, high-yield, and solution-oriented
Optimized yields and long-term profitability
Best value for money in the long term
Sustainable and cost-effective energy
Durable, eco-friendly, and cost-effective
System Planning & Monitoring
REFU-Softwaretools bieten Lösungen zur Dateneinrichtung für PV-Installationen.
Während des Betriebs Ihrer PV-Anlage sorgt REFUlog für eine zuverlässige Systemkommunikation und Überwachung.
Jeder REFU-Wechselrichter verfügt über einen integrierten Datenlogger und kann mit unserem cloudbasierten Überwachungsportal verbunden werden.
Proven in PV projects worldwide
REFUlink is used in PV projects of various sizes — from industrial rooftop installations to large solar parks.
“REFUlink turned a regulatory challenge into a straightforward modernization of our plants — with minimal effort and high operational reliability.”
Mr. Nikos Mavrogiannis
Repowering of a PV portfolio in Greece – 1.4 MW
PROJECT
Greece
POWER
1,4 MW
INVERTER
REFUsol
INTEGRATION
REFUlink + REFUview
Three existing PV plants in Greece had to be retrofitted to comply with new grid operator requirements for active power control and remote shutdown. The objective was to implement the regulatory requirements without interrupting ongoing plant operation.
Retrofit to meet new grid requirements
With REFUlink, one gateway was installed per plant, enabling centralized power control and communication with the grid operator. At the same time, the existing REFUsol inverters were integrated into modern monitoring and control structures.
Compliance with new regulatory requirements for power control
Modernization of existing inverters through new communication interfaces
Simplified replacement of individual inverters without reconfiguration
Centralized monitoring of all plants via REFUview
Let’s work together to optimize your system.
REFU is not just a supplier, but a technical partner for your PV infrastructure.
Analysis of your existing plant and identification of opportunities for optimization
Development of future-proof solutions for repowering and expansion
Direct access to experienced service technicians
Prompt support for technical challenges