juwi’s Success Story

juwi is one of the worldwide leading companies in the area of renewable energies and was founded by Matthias Willenbacher and Fred Jung in 1996.

Together they developed juwi from a two-man office to a company acting worldwide with more than 1,000 employees and a sales volume of approximately  700 million EUR which constructs solar and wind.

In 2012: Asia-Pacific & Green Investments

Our new subsidiary in Singapore operates our first projects in Japan and Southeast-Asia. In the meantime, juwi has established subsidiaries and offices in almost every German federal state. We employ more than 1,800 people worldwide. Moreover, juwi Invest GmbH procures "green" investments in Germany.

In 2011: Storage technologies, Wood Pellets and Wind Energy

In 2011, juwi engages in finding new storage technologies and increasingly produces wood pellets. We also start selling green energy from local wind parks to consumers nearby. By the end of 2011, more than 1,500 people work for juwi worldwide. In the renowned competition "Great Place to Work", juwi is again awarded to be one of Germany's best employers.

In 2010: New Project Areas: E-Mobility, Direct Marketing of Electricity, Repowering

juwi is expanding, the number of employees rises again to more than 1,000 at the end of the year. juwi is active in more and more countries, besides India also South Africa, Bulgaria, Chile and the United Kingdom. Off-grid projects are constructed, for example in Senegal, allowing for an electricity supply independent from the grid.


In repowering projects older wind turbines are replaced with modern turbines, for example in Schneebergerhof.  A "Clean Energy & Mobility Center" is opened, here different kinds of electric mobility are presented. Moreover, the company is awarded as "Great Place to work".

In 2009: Number of Employee's doubles, Internationalization, Joint Ventures

The number of employee's increases worldwide – in the course of 2009 from approx. 450 to approx. 750 at the end of the year (approximately +50%); the annual turnover grows from 400 million euro in 2008 to 600 million euro in 2009.


In Costa Rica the construction work in Central America’s biggest wind farm with 55 turbines is completed. Start of construction for the first juwi wind farm in Nebraska in the USA with 40 turbines (60 MW).


The third-biggest solar park of the world with 53 megawatts is established on a former training area near Cottbus. The first solar park with 2.2 megawatts is built in the USA for Mars in New Jersey. A PV plant with approximately 1,000 kW is constructed on Verona’s soccer stadium. In August 2009 the new section of juwi’s headquarters in Wörrstadt is opened. Other joint ventures with regional utilities are established in Offenbach and Bern. juwi is awarded the following prices: Entrepreneur of the Year, Greentech Manager of the Year, Environmental Price Rhineland-Palatinate, Clean Tech Media Award.

In 2008: Relocation to Wörrstadt and Internationalization

This year the number of employees increases to more than 400 worldwide. Due to rapid growth the company moves its headquarters to Wörrstadt, to the world’s most energy efficient office building. The main focus of juwi wind activities is in France, the USA, Costa Rica, Poland and the Czech Republic.


juwi solar establishes solar parks in Southern France and in the North-Italian Bolzano and is also active in Spain, Greece and the USA.


juwi is awarded in the German image campaign "Country of Ideas".

In 2007: Superlatives Nationwide and Internationally

In 2007 employee numbers increase from 150 to about 250, the annual turnover increases to approximately 200 million euro. The company moves its headquarters in 2008 to Wörrstadt. juwi constructs PV projects with approx. 40 MW. In Kigali (Rwanda) a PV plant with 250 kW is established. Moreover, the construction of the world-biggest PV plant begins at the end of April in the "Energy Park Waldpolenz" in Brandis, east of Leipzig. In the area of wind energy juwi realizes several projects in Germany and France. In Costa Rica an agreement is signed in July for more than 50 MW. In the “Energy Landscape Morbach” the juwi group starts the production of pellets.

In 2006: Construction of 500th PV Plant

The solar activities of the juwi group are bundled up in juwi solar Ltd with headquarters in Bolanden. In 2006 juwi solar establishes solar power plants with approximately 12,000 kW. In Wald-Algesheim (Mainz-Bingen) the so far biggest project is implemented, in Bühl near Baden-Baden the 500th PV plant is constructed.

A new office in Leipzig coordinates projects in Saxony: juwi begins with the construction of a 6,000 kW free-field project on a former airfield.


Wind energy in forested areas becomes popular – juwi constructs projects in several locations in Rhineland-Palatine – in total 51. Bio energy is expanding; two new fermentation gas plants are in operation since the end of 2006.

In 2005: Specialist for Wind and Solar Power

Together with the local ulitily Stadtwerke Mainz AG juwi establishes the RIO Energie GmbH & Co. KG, which gives a new push to the establishment of renewable energies in Rhinehesse.


With a special financing model RIO makes it possible for homeowners to produce solar power.
In the southwest of Germany juwi develops PV plants on former dump surfaces: Only in 2005 several free-field plants with 3.5 MW are constructed.


In the wind farm Plouguin/France juwi installs 2 other wind turbines of the type Enercon E-66 / 20.70. In the Czech town Jablonec nad Nisou juwi s.r.o. opens an office.


juwi also establishes an office in Spain.

A total of 18 wind turbines of the 1.5 MW class are constructed in the Vorderpfalz.

In 2004: Landmark Projects in Solar Energy

On the roof of the soccer stadium in Mainz juwi establishes the country’s biggest PV plant on a sports arena with 240 kW. Together with the utility in Mainz several private investors pursue the plant for approximately one million euro.


In Plouguin in France juwi constructs the first international wind farm with five Enercon E-66 / 20.70 wind turbines. A first gas fermentation plant is constructed in Hessen. Agricultural rubbish and raw material is converted to gas, which can be used for eco-friendly power production.

In 2003: Growth Needs Space

juwi moves into a new building in low energy construction method. The international business expands – in Plouguin close to Brest in North-French Brittany the juwi group receives the construction permit for five wind turbines of the 2-megawatt class.


Wind power activities in the USA and Costa Rica are also intensified.

In Germany the position of solar energy within the juwi group increases: in Autenried (Bavaria) and Biebesheim (Hessen) juwi builds one of the worldwide first solar megawatt projects on roof surfaces: On a total of about 30,000 square metres a plant with 1.6 MW is constructed.

In 2002: Energy Landscape Morbach

The construction of the Energy Landscape Morbach with 14 wind turbines and solar plants with an output of 500 kWp begins in the Hunsrück. Photovoltaic activities are expanded in South Germany. In Bavaria the first big PV plants on agricultural roofs are connected to the grid.

In 2001: Schneebergerhof

juwi establishes the biggest solar power plant on a school in Rhineland-Palatinate (900 square metres, 90 kWp). In June the PV test field in Schneebergerhof is constructed. Specific features are different solar modules on roofs and free-fields. A total of 19 solar power plants are constructed on schools in Kirchheimbolanden, Kusel and Mainz.

In 2000: First PV Large-Scale Projects

In June the first PV large-scale plant with 92 kWp is constructed.

In July the first wind power plant with a concrete tower is established at Schneebergerhof in Rhineland-Palatinate. For the first time a webcam is used. The wind park "Lettweiler" with eleven wind turbines and an output of 16.25 MW is connected to the grid.

In 1999: First Photovoltaic (PV) projects

In September the biggest wind farm in South Germany is constructed: 19 turbines with 19.1 MW. During the following years the wind farm is further developed. Today 28 wind power plants with 32.9 MW generate yearly about 57 million kilowatt hours clean energy. Moreover, juwi enters into the solar market.

In 1998: From Rhineland-Palatinate into the Wide World

juwi establishes other wind turbines in Rhineland-Palatinate and begins with the first international activities. A study on the subject "Electrification of Rural Areas in the Red Sea" in Eritrea is conducted.

In 1997: Wind Power

Introduction of three first wind power plants near Spiesheim.

The first 1.5 megawatts (MW) of wind power in Rhineland-Palatinate are realized.

In 1996: The First Steps - Wind Power in Schneebergerhof and Kirchheimbolanden

Everything begins in Rhineland-Palatinate. In 1996 two energy idealists begin their first wind power projects. The physicist Matthias Willenbacher starts a project with students, the "Schwinge" project in Schneebergerhof. At the same time the agrarian-economist Fred Jung starts a project in the neighbouring town Kirchheimbolanden.


On the 4th of December 1996 they establish the company Jung & Willenbacher Windenergie GmbH. It is renamed as juwi Ltd and has its first headquarters in Mainz, then in Bolanden.

Facts & Figures