Welcome to Fronius USA LLC

Fronius Austria was established in 1946. Fronius USA was established in January of 2002. The founder of Fronius Austria had the vision to see a need for high quality, competitively priced welding machines in the European market.

During the span of time since, the Fronius Company has become not only a leading manufacturer of quality welding equipment, but as a leader in the technology of welding.

As a company, Fronius International GmbH (Austria) recognized the need to promote this technology on a worldwide basis. This brought about the formation of Fronius USA.

Fronius USA LLC has begun by introducing the Digital Revolution machines. The TransPuls Synergic and TransSynergic welder versions of the 2700, 4000 and 5000 model welding machines come complete with an American faceplate and synergic lines for common AWS standard filler metals.

Fronius USA LLC has also introduced production proven LaserHybrid, Twin Wire and TIG Hot Wire.

The quality certificate ISO 9001 of our production plant shows complete guarantee for highest, periodical controlled quality. Our products are manufactured according to the valid product standards and are provided with the UL / CSA approval.

Our office in Brighton Michigan will support your companies needs with service and spare parts, along with a Demonstration / Weldtest Lab for CMT, Tandem, Plasma, MIG and TIG welding.

Fronius USA LLC
Welding Technology Division
10421 Citation Drive
Suite 1100
Brighton, MI 48116
Tel: 810-220-4414
Fax: 810-220-4424

Technology in a leading hand
Fronius converts energy and is recognized as a technology leader in our USA divisions.

In the field of welding technology, Fronius is a competent partner to the international automotive industry and other metalworking industries where high quality is a major concern.
Its superior know-how has also established Fronius in the field of photovoltaics, where it produces high-quality solar electronics.

Welding technology division Products: Arc welding for crafts, trade and industry in manual and fully automatic welding applications.
Sales: Direct sales in USA.

Solar electronics division Products: Inverters and data communication solutions for grid-connected photovoltaic systems.
Sales: Direct sales in North America.

Grid-Connected PV Inverters
Solar energy is converted into electricity and fed into the public grid. Efficient, reliable, high power inverters form the heart of any PV system. In the development of PV inverters, Fronius has thought out new technologies, searched for innovative solutions, and has found completely new answers. The result: Highly functional grid tied inverters, which interact optimally with all solar modules.

Fronius IG. The reliable series of PV inverters.

Maximum flexibility with Fronius IG. The PV inverter family works exceptionally with all solar panels available on the market. The ingenious processor control – the Fronius IG Module-Manager™ software – and a large number of other enhancements makes them very versatile. They work reliably and efficiently in every class thanks to Fronius’ remarkable experience and decades of research and development.

Maximum energy harvest. Cloudy or clear.
The first complete solution.
Reliable. Proven. Smart.

A strong addition to the family: The next generation Fronius IG Plus inverter builds on a successful model with multiple enhancements, including maximum power harvest, a built-in six circuit string combiner, integrated, lockable DC Disconnect, significantly improved efficiency, and unbeatable reliability. New, larger power classes expand the proven Fronius IG family (from 3.0 to 12 kW). And numerous advantages provide consistently high earnings. More info at

System Monitoring
Fronius DATCOM is a user-friendly data communications system for individual PV system monitoring.

The hardware components are quick and easy to install, the software easy to operate. Because of its modular design, Fronius DATCOM can be upgraded at any time. Customized monitoring solutions, from basic equipment to complete system management, can be installed quickly and easily. Because every PV system operator wants to know how their investment in the system is doing.

Modular. Quick and easy to install. User-friendly.

Fronius Personal Display
Operating Manuals

Anyone who wants to keep up to date with the output data of their installation yet does not want to run to the inverter to read off the values every time, can now use the Personal Display.

Simply place it in the desired room at home and you can read off all the current data from up to 15 inverters at any time. Data transmission from the inverter to the Personal Display is executed via radio transmission. Each inverter to be monitored requires a Personal Display Card.

At night the Personal Display presents the collected data from the previous day.

Installation is simple: just insert the Personal Display Card into the Fronius inverter, attach the antenna on or close to the inverter, set up the Personal Display in the house and you’re all set. More info at

No holes and sealing, no costly laying of cables – just plug & play. The wireless radio link makes this possible, regardless of whether you use Fronius DATCOM or not.

Webcasts and Seminars
Skills lay the foundations for a successful future. There is a lot of know-how packed into each of our products – and we want to pass this know-how on to our customers.

Below you will find a detailed list of scheduled events. We hope you can join us and look forward to seeing you there!

Warranty process
At Fronius, we have been making electronics equipment for over a half a century. At our ISO 9001 certified production plants, we make only high quality products that we stand behind.

You will probably not encounter a problem with your FRONIUS Solar Inverter, but in the unlikely event that within 10 years from the original purchase, you discover a problem caused by defects in either workmanship or materials, we will be happy to see that it is repaired or replaced depending on what we decide would be best.

The FRONIUS Solar Inverters are designed to withstand normal wear and tear, but they are not indestructible. In the event that your inverter will need to be serviced, you must follow this policy and procedure for warranty returns and repairs:

The Installer in the field notes a Service issue. Installer calls Fronius Technical Support Representative at (810) 220-4414. Technical Support is available Monday through Friday, excluding holidays, from 6:00am to 6:00pm PST and weekends by appointment only.

Fronius Technical Support Representative determines whether the issue requires a replacement unit or component, and if so an RMA is issued during the call.

Information is collected regarding system information including serial number, where the replacement unit/component is to be delivered and where the potential Service Reimbursement would be used.

Fronius USA, LLC ships a replacement unit/component to the Installer.

The Installer replaces the non-functioning unit/component and returns the non-functioning unit/component back to Fronius within 14 days.

Fronius USA, LLC inspects the non-functioning unit/component within 14 days of receipt to see if the issue falls under the scope of the Warranty agreement and the Service Reimbursement program. If the issue meets both criteria, your Service reimbursement of $250.00 per qualifying RMA can be either a credit provided on your companies behalf to your Fronius Distributor or a check issued by Fronius to your company (sorry Fronius can not issue service reimbursement checks to individuals). Further details of this program can be found in the Fronius USA Premium 10 and 15 year Warranties.
More info at

Planning aids
Planning an efficient photovoltaic system is a complex matter. Many different factors must be taken into account: from the selection of the module type, and the arrangement of the modules, up to the choice of the most suitable inverter, and many other parameters. It is best to get advice from a competent PV installation engineer. To get a first impression, take a look at the Fronius online planning aids.
Configuration examples
Options for diagnosis, analysis and monitoring ranging from small systems to megawatt systems.
Fronius DatCom Assistant
The DatCom Assistant is designed to help you in designing and installing a Fronius IG DatCom system.

Planning examples for PV system monitoring
Efficient planning of PV system monitoring on the basis of actual examples.
Fronius Configuration Tool
Comfortable software for the exact dimensioning of PV systems. Free to download and use!

Seven simple steps to optimum PV system monitoring.
More info at

Stocking Distributors
Fronius on hand

Not only has Fronius built up a global sales and service network, it has also trained special teams who are ready to address the concerns of our customers. Every single Fronius partner has been carefully selected to provide trustworthy advice and customer-oriented service. Pick a Fronius stocking distributor who can deliver the expertise to meet your needs.

Fronius Stocking Distributors
AEE Solar
1155 Redway Dr.
Redway, CA 95560
Tel: 800-777-6609
1730 Camino Carlos Rey Suite 103
Santa Fe, NM 87507
Tel:(888) 396-6611
DC Power Systems, Inc.
1500 Valley House Drive, Suite 210
Rhonert Park, CA 94928 Tel: 800-967-6917
warehouse locations:
White River Junction, VT
Jessup, MD
Durango , CO
Grass Valley, CA
Berkeley, CA
San Diego, CA
Tel: 800-GO-SOLAR or 800-467-6527
Krannich Solar, Inc.
7000 Commerce Pkwy., Suite B
Mt. Laurel, NJ 08054
Tel. 856-802-0991

3403 N. Sam Houston Parkway
Suite 300
Houston, TX 77086
Tel. 877-558-7479

Solar Depot LLC – Petaluma Warehouse
1240 Holm Rd.
Petaluma, CA 94954
Tel: 800-822-4041

Solar Depot LLC – Sacramento Warehouse
8540 Morrison Creek Drive
Sacramento, CA 95828
Tel: 800-321-0101

Solar Depot LLC – Corona Warehouse
280 N. Smith Ave.
Corona, CA 92880
Tel: 800-680-7922

SunWize Technologies
1151 Flatbush Road
Kingston, NY 12401-7011
Tel: 800-817-6527


Željko Serdar
head of business association


CROATIAN CENTER of RENEWABLE ENERGY SOURCES (CCRES)• was founded in 1988 as the non-profit European Association for Renewable Energy that conducts its work independently of political parties, institutions, commercial enterprises and interest groups, • is dedicated to the cause of completely substituting for nuclear and fossil energy through renewable energy, • regards solar energy supply as essential to preserve the natural resources and a prerequisite for a sustainable economy,• acts to change conventional political priorities and common infrastructures in favor of renewable energy, from the local to the international level, • brings together expertise from the fields of politics, economy, science, and culture to promote the entry of solar energy, • provides the opportunity to play a part in the sociocultural movement for renewable energy by joining the association for everyone, • considers full renewable energy supply a momentous and visionary goal - the challenge of the century to humanity. Zeljko Serdar Head of CCRES association

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