W-QUADRAT

W-QUADRAT is a German solar energy company headquartered in Gernsbach, Baden-Württemberg. Founded in October 1997 as W-QUADRAT Westermann & Wörner GmbH by Bruno Wörner and Günter Westermann, the company grew out of an earlier venture called "Önergie," which the two founders had started in 1991 as a side business focused on planning and installing ecological energy systems. The company's roots trace back to a private initiative to build a low-energy house equipped with a 1.8 kWp photovoltaic system, a solar thermal system, and an air-to-water heat pump — a project that inspired the founders to commercialize environmentally friendly solar technology. W-QUADRAT operates as a certified master crafts business (Meisterbetrieb) offering photovoltaic systems, battery storage, e-mobility charging stations, economic feasibility assessments, and funding guidance. The company serves residential and commercial customers primarily in the Baden-Württemberg region of southwestern Germany. According to its official website, W-QUADRAT has realized over 7,000 customer projects and brings more than 28 years of experience in the solar sector. The company emphasizes transparent consultation, long-term partnerships, and the use of premium components from leading manufacturers. The company's history is closely tied to the development of Germany's renewable energy market. The introduction of the Renewable Energy Sources Act (EEG) in 2000 significantly boosted the acceptance and adoption of photovoltaic systems, fueling W-QUADRAT's growth. In 2006, due to space constraints at its original location in the Faltergasse in Gernsbach, the company acquired a plot in the Baccarat-Straße industrial area and constructed a new company building, which was completed around 2008. W-QUADRAT remains a privately held company and continues to operate from its Gernsbach headquarters, serving customers across the region with a focus on quality craftsmanship and ongoing technical education.

W-QUADRAT's history begins with a private initiative: the construction of a low-energy house equipped with a 1.8 kWp photovoltaic system, a solar thermal system, and an air-to-water heat pump for heating and domestic water. This project, driven by the founders' interest in solar energy — an interest shaped by the aftermath of the 1973 oil crisis and the "car-free Sundays" — led to the vision of commercializing environmentally friendly technologies with a focus on solar engineering. In 1991, Bruno Wörner and Günter Westermann founded a company called "Önergie," which operated as a side business planning and installing ecological energy systems. Even in these early years, numerous systems — photovoltaics, solar thermal, heat pumps, and combined heat and power units — were realized in the region. In October 1997, the company was formally established as W-QUADRAT Westermann & Wörner GmbH. In addition to solar technology, the new company distributed light electric vehicles (the MiniEL and Twike) and engaged in electronics development, including hardware and software. The full scope of Önergie's operations was taken over. The Renewable Energy Sources Act (EEG), which came into force in 2000, became a motor for the solar industry: acceptance of photovoltaics rose, and more PV systems could be built. As the rapidly growing solar company increasingly outgrew its premises in the Faltergasse in Gernsbach, the decision was made in 2006 to acquire a plot in the Baccarat-Straße industrial area for a new company building. Following approval, planning, and construction, the new building was completed around 2008. Since then, W-QUADRAT has continued to operate from Gernsbach, expanding its offerings to include battery storage systems and e-mobility charging stations alongside photovoltaic systems. The company reports having realized over 7,000 customer projects and emphasizes ongoing training and regional knowledge exchange to stay current with the latest technology.

• 2008

  New company building completed after approval, planning, and construction phases.

• 2006

  Decision to acquire a plot in the Baccarat-Straße industrial area in Gernsbach for a new company building.

• 2000

  The Renewable Energy Sources Act (EEG) comes into force, boosting the solar industry and PV adoption.

• 1997

  W-QUADRAT Westermann & Wörner GmbH is founded in October; takes over Önergie's full scope of operations.

• 1991

  Bruno Wörner and Günter Westermann found "Önergie," a side business for planning and installing ecological energy systems.

Certified master crafts business offering premium solar energy solutions with transparent consultation and long-term customer partnerships in Baden-Württemberg.

• Photovoltaic systems

• Battery storage systems

• E-mobility charging stations

• Solar thermal systems

• Heat pumps

• Economic feasibility assessments

• Funding guidance

1. 15★ Photovoltaik & Stromspeicher Baden-Württemberg | W-QUADRATw-quadrat.de
2. 2Firmengeschichte | W-QUADRAT seit 1991w-quadrat.de
3. 3W-QUADRAT - Wikidatawikidata.org