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REFU Elektronik GmbH

Marktstr. 185, 72793 Pfullingen
Telephone +49 7121 4332-0
Fax +49 7121 4332-140

Hall map

Energy Storage Europe 2019 hall map (Hall 8b): stand D18

Fairground map

Energy Storage Europe 2019 fairground map: Hall 8b


SVP Segment Solar, Storage and Hybrid Zouhair Kefi

Our range of products

Product categories

  • 06  Storage Systems
  • 06.01  Stationary Grid-Connected Systems
  • 06.01.02  Storage for Integration into Distribution Networks

Storage for Integration into Distribution Networks

Our products

Product category: Storage for Integration into Distribution Networks

REFUstore 88K

The next generation of bidirectional high power battery inverters

  • Drastic reduction in BOS costs
  • One PowerUnit - unlimited applications
  • Maximum power density
  • Easy serviceability

The REFUstore 88K is based on the new inverter platform from REFU. It is applicable for different voltages. With a rated power of 88 kW at 400V, it is perfectly suited for commercial behind-the-meter applications such as self-consumption optimization or peak-shavingg, at a nominal voltage of 180V and 40kVA nominal power it can be easily used for Second-Life applications.

Flexible integration, maximum freedom in planning
Thanks to AC-coupling, the REFUstore 88K can be easily integrated with existing PV systems. The highly modular solution allows it to be used in systems from 88 kW up to MWs in size to meet the demands of both energy and power applications.

This inverter is specifically designed for all high voltage batteries and, allows different communication protocols like open Sunspec MESA. The higher flexibility in system design reduces BOS costs drastically.

Different configurations, maximum of applications
The REFUstore 88K is available in several configurations. Whether as a basic variant only with DC and AC fuses or fully equipped with fuses, switches, SPD's and pre-charge circuit, your application defines the features of the device. The REFUstore 88K's design is focused on the BOS cost optimization and maximum flexibility for use in various applications.

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Product category: Storage for Integration into Distribution Networks

REFUsol 08-23K

The classic with many years of experience.

  • Future-proof 
  • Decentralized
  • Adaptable
The new generation is based on the successful platform, which stands for highest yields and freedom from maintenance. Whether you are integrating storage, integrating the PV system into Smart Grid networks or changing regulations - our constantly updated firmware equips you for the future.

Flexible design, worldwide compatibility
Plan and build your decentralized PV project to your own taste. Our devices can be used in various configurations and can be easily scaled for large plants. Faster return on invest is assured by subsystems that are already connected to the grid during the construction phase.
Our 08-23K string inverters are installed worldwide and are compatible to all major grid requirements. They can be used for voltage levels from 220 V to 460 V. We have also have a special UL series product line that complies to all the unique and specific requirements of the North American market.

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Product category: Storage for Integration into Distribution Networks

Containerized solution REFUcube

No Either/Or

  •  Reduced costs and risk
  •  Easy installation thanks to plug & play preparation
  •  Reduced maintenance
Up to now, solar plant designers had to always decide between central and string (i.e. distributed) inverter solutions and accept the respective disadvantages of the chosen solution. The REFUcube now combines both solutions – by integrating string inverters with transformers, MV and LV switchgears into a container. The resulting compact plug&play solution is available in different power classes from 1-3 MW and combines the best of centralized and decentralized plant designs while diminishing the negative aspects of each system.

Simple Installation, reduced costs
The REFUcube is delivered on site as a pre-wired container. All cabling inside the container such as DC cabling from DC distribution panel to inverter, AC cabling from inverter to AC switchgear and data communication are already installed. The container can be transported and handled with the ease thanks to the standardised ISO container setting along with low weight and compact design. The REFU CombinerBoxes are positioned close to the solar panels and thereby allowing short PV string cables and only one cable pair (+/–) from each DC CombinerBox to the container. Thanks to the centralized concept cold and hot commissioning activities are significantly reduced in duration.

The REFUcube ensures an optimal compatibility of all components in the system and is conceptualized as a plug & play solution. The integration of string inverters allows on the one hand an easy replacement in case of problems, while on the other hand guaranteeing a continuous operation of the remaining inverters. Therefore the overall system availability will be close to 100%.

The design and easy installation of the REFUcube provides several areas of cost savings: the reduction of cabling, minimized set-up and installation effort as well as reduction of commissioning costs.

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About us

Company details

REFU Elektronik - Pioneer of frequency converters
Setting new standards with sustainable solutions - this is not only our philosophy, but also the idea to which we have committed ourselves for the future.

In more than 50 years of successful development, we have continuously expanded our expertise in the field of power electronics and are now the leading supplier of power electronics with frequency inverters, solar inverters and energy storage systems in our ever growing portfolio.

We develop and integrate synergistic components for mobile and stationary energy solutions and thus offer a common platform for the 'energy revolution' with regard to power electronic devices and systems in all applications. We bundle our competencies in the areas of high-performance electronics and battery storage systems in order to develop economical, efficient and environmentally conscious solutions. The key to our success lies in our ability to combine the expertise in controllable power electronics, switch cabinet construction and electromobility with customer-specific designs and production.

REFUdrive - we move.

We develop solutions for efficient, economically and ecologically conscious work. Wherever mobile machines are in demand. Whether in automated vehicles for container transport or for shearer loaders in mining applications or as equipment for modern municipal vehicles - the system solutions from REFUdrive can be used flexibly, efficiently and sustainably.

REFUsol - we convert.

We were there when solar energy was still in its infancy over 20 years ago and continue to develop state of the art solutions as the industry matures. We develop highly efficient solutions for medium and large sized PV systems and offer everything you need right from the planning software, string inverters, complete solutions with transformers and monitoring portals as well all from a single source.

REFUenergy - we store.

At REFUenergy we use our competence and experience in the field of power electronics and combine inverters for battery applications with energy management systems to make energy accessible to everyone. Our application areas range from commercial storage solutions for optimizing self consumption to power supply network stabilization to peak-shaving applications and even to diesel-battery hybrid systems. Life needs energy - in an economically efficient and ecologically conscious way and we have the right solution for you.


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