Three JUWI employees are walking through a solar park.

Accelerating the energy transition

For 30 years, JUWI has been one of the leading companies in the renewable energy sector.

Energizing sustainability

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We develop and build pioneering, technologically leading power plants for renewable energies, whose operation we permanently ensure and monitor. In our projects, we combine quality, top performance, cost awareness and passion.

Our vision

100 % renewable energy

JUWI embodies and lives sustainability. We have a vision of a climate-positive world in which renewable energies ensure the security of the power supply and reconcile ecology, economy and society.

Sustainability

We are JUWI

Pioneer, groundbreaker, trendsetter

For a climate-friendly, reliable and economical energy supply.

We offer end-to-end project development and other services related to the construction and operation of renewable energy plants worldwide. Our business areas primarily include wind and solar energy projects. For around 30 years, we have initiated a total investment volume of more than 10 billion euros for the realization of energy projects. And we still have a lot of plans – we want to continue to play a key role in the energy supply of the future.

1,350 people

across 8 countries are employed at JUWI. Together we are driving the energy transition forward with full commitment.

2,000

In the meantime, JUWI has realized more than 2,000 solar plants - with a total capacity of more than 4,000 megawatts.

over 1,300

At approximately 250 locations, the more than 1,300 wind turbines have a capacity of about 3,000 megawatts.

11 billion kWh

This is how much electricity the plants realized by JUWI generate annually. This corresponds to the annual demand of around 4 million households in Germany.

1,350

Employees

over 2,000

Solar plants

over 1,300

Wind energy plants

11 billion kWh

Electricity

What makes us stand out as a partner?

We are fully committed. Always.

In all phases of a project, we engage you and the local residents. We want to convince. With facts and arguments, with passion and competence. This is the way we work – all along the line.

Our status? Future-active.

Some are waiting to see what the future will bring. We want to shape it. The technologies have been in place for a long time. We implement them.

Wind energy on land (onshore)

Solar energy on freefield sites

Hybrid and storage solutions

Our management

The heads of the JUWI Group.

Jost Backhaus (CEO)

As of October 1, 2025, Jost Backhaus holds the position of Chief Executive Officer. The qualified industrial engineer has been working in the renewable energy sector for more than 26 years. Most recently he operated as Managing Director of Steelwind GmbH in Nordenham, Lower Saxony, a manufacturer of foundations for offshore wind turbines. Prior to that, he gained extensive management experience in both national and international environments. His roles included serving on the executive board of Enercon GmbH, a global manufacturer of onshore wind turbines.

Christian Arnold (COO Germany)

The graduate engineer (FH) Christian Arnold assumed responsibility for the operating business in Germany as managing director on November 15, 2021. He has been with the JUWI Group since 2017, having previously worked as OEM Field Service Leader at Switzerland's General Electric/ALSTOM AG.

Stephan Hansen (COO International)

The graduate mechanical engineer has been on the management board of the JUWI Group since August 2014. Before joining JUWI at the beginning of 2014 as Managing Director JUWI international, he was Executive Vice President of NANOSOLAR INC., San Jose, where he was responsible for global sales of the manufacturer of an innovative photovoltaic thin-film technology. From July 2004 to June 2012, Stephan Hansen was Managing Director of First Solar GmbH and Vice President Business Development EMEA.

How we work

ISO-Certified Quality Management

At JUWI, streamlined and purpose-driven processes are at the heart of everything we do: from project development and construction to operations and maintenance. Our goal is to build long-term relationships with satisfied customers, which is why quality and reliability are central to our approach.

To ensure this, the JUWI Group operates under a certified management system that undergoes regular internal and external audits. This guarantees consistent performance, transparency, and continuous improvement across all areas of our business.

View certificates

Our History

1996

How it all began

Matthias Willenbacher and Fred Jung begin conducting wind measurements on their parents' farms in the Palatinate region. Shortly thereafter, the two founded the company Jung & Willenbacher Windenergie GmbH.

1997 to 1998

The first wind turbine

The first wind turbine is built on the Schneebergerhof in the Donnersberg district, and three more turbines in Spiesheim are connected to the grid shortly after.

1999 to 2000

The first solar system

JUWI enters the solar market and implements its first larger solar plant in Kirchheimbolanden the following year.

2001 to 2005

Global expansion of project development

In addition to the continuous expansion of its own wind and solar park projects in Germany, JUWI also becomes active abroad. In 2004, the company establishes its first wind farm in Brittany. This is followed by projects in the USA and Costa Rica.

2006 to 2007

Rapid growth

In 2006, JUWI constructs the world’s third-largest solar park at the former Lieberose military training ground. The international expansion continues as well.

2008 to 2010

New location, new growth

The company relocates to Wörrstadt and soon has to buid a second building. By the end of 2010, the number of employees rises to over 1.000. In 2009, JUWI builds the largest wind farm in Central America in Costa Rica. Additionally, projects are realized in Poland, the Czech Republic, Greece, South Africa, and India.

2011 to 2015

Focusing on core business

Political conditions in the home market of Germany and many other European countries deteriorate significantly. In Germany, the solar market collapses in 2012. At the end of 2014, MVV Energie from Mannheim acquires a stake in the JUWI Group. This partnership stabilizes JUWI sustainably and opens up new prospects.

2016 to 2021

Expansion of renewable energies

Globally, JUWI reaches new company records. Shortly after the turn of the year 2016/2017, JUWI surpasses the 2,000 megawatt threshold of wind energy capacity it has installed. In 2019, JUWI constructs its 1,000th wind turbine. MVV Energie AG from Mannheim acquires 100 percent of the shares in JUWI, providing another significant boost for the expansion of renewable energies.

2022

JUWI Merges with Windwärts

In 2022, MVV owned companies JUWI and Windwärts merge. This doubling of expertise and the new brand identity make JUWI an even more successful enabler of the energy transition. In April of the same year, JUWI completes the largest bifacial solar park in Europe in Greece. Additionally, in the same year, JUWI commissions the largest solar-hybrid project in the world on a mining site in Egypt.

2023 to the present

New employer brand and major projects

Globally, JUWI plans and constructs a variety of new large-scale projects in the wind and solar sectors. In early 2024, JUWI surpasses a total of 3.000 MW of installed wind energy capacity and 4.000 MW in solar energy. Additionally, as part of the new employer brand "The Power of Our Unity. Sustainable. Together. Strong" a new career website is launched.

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