We are the Specialists

The origins of E3/DC lie in the development of energy accumulator systems for the automotive industry. The E3 automobile is transformed into a mobile accumulator by the charging, discharging and driving technology developed by the company, Wilhelm Karmann.

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Energy accumulator systems for the automobile industry

The origins of E3/DC lie in the development of energy accumulator systems for the automotive industry. The E3 automobile is transformed into a mobile accumulator by the charging, discharging and driving technology developed by the company, Wilhelm Karmann.

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Technologies for self-determined energy management

In 2010, E3/DC GmbH, as a spin-off of Wilhelm Karmann GmbH Osnabrück, developed into a manufacturer of inverters. The goal of E3/DC is to achieve sustainable new standards for a household energy supply that offers maximum performance and quality. The well-engineered technologies that originate from the automotive industry are used to make renewable energy available, not only in the area of mobility, but also in other areas of daily life.
The company name E3/DC is derived from an acronym of the German words, “einsparend, erneuerbar, effektiv” (saving, renewable, effective), hence E3, and DC or direct current.

Top Brand PV

In 2019, E3/DC received the TOP BRAND PV seal for the fifth time in a row. Since 2010, EuPD Research has been asking installation companies about t...
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Brand of the Century

In November 2015, E3/DC GmbH was voted “Brand of the Century”. The company was nominated after a comprehensive selection process, in co...
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Customer Satisfaction Seal

The EuPD Research awarded the Customer Satisfaction Seal to E3/DC in June 2016, March 2017 and again in April 2018 – each time with a score of 1....
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Red Dot Award

This award, which EC/DC won in 2015, for the S10 home power plant, is backed by a renowned international design competition. Every year, this compe...
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Top 100 Seal

The TOP 100 seal is awarded to particularly innovative medium-sized enterprises. In 2015, E3/DC was able to secure the title of “Top Innovato...
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German Design Award

Identifying unique design trends and presenting successful products and projects – this is the idea behind the German Design Award. A top-class i...
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TOP Electricity Accumulator

In 2016, WirtschaftsWoche published an overview of accumulator systems, in cooperation with EuPD Research and the German CleanTech Institute. 152 a...
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IBESA Storage Champion

The first international network of excellence in the field of battery technology and energy storage, IBESA (International Battery and Energy Storag...
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Accumulator highlights

In the “Accumulator Highlights” ranking, presented by pv magazine, at Energy Storage Europe 2018, E3/DC was able to secure a top positi...
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Plus X Award

The Plus X Award is an innovation prize for technology, sport and lifestyle. It recognises brands that offer products that have an edge over their ...
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German Brand Award

The German Brand Award is dedicated to taking a holistic view of brands and brand management. In 2017 and 2018, E3/DC received the award “Ind...
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Proven quality in the area of power storage

Autonomy for residential and commercial buildings

The company name E3/DC is derived from an acronym of the German words, “einsparend, erneuerbar, effektiv” (saving, renewable, effective), hence E3, and DC or direct current. Since the company was founded, over 20,000 home power plants and Quattroporte systems are up and running at our customers’ premises, and are making a contribution towards the environmentally-friendly and cost-saving provision of energy. In our locations in Osnabrück, Wetter an der Ruhr and Göttingen, we have a workforce of more than 120 employees, who strive to make the vision of autonomous houses and enterprises, and also solar electric mobility a reality. By storing and using solar energy, our independence from fossil fuel energy increases. Our energy supply can become up to 100 % autonomous. Every year, we produce over 10,000 home power plants, which are manufactured exclusively in Germany, and are subject to the strictest quality controls, in accordance with the ISO 9001 standard.

The New Image Film

PV-Storage

With the vision of providing freedom and independence through technology, E3/DC has succeeded in offering 100 % autonomy: if you want it, and whenever you want it. In our image film, you can learn more about the redevelopment of the S10 home power plant, and how an electricity accumulator has to be designed in order to achieve genuine autonomy.

Our Vision

A self-determined energy supply and sustainable mobility

E3/DC’s development goals are focused on self-sufficient houses and solar-powered electric cars. Because our technological roots are in the automotive sector, we have very high standards in terms of quality and standardisation. Therefore, it stands to reason that we will continue to focus on the big issue of “mobility”. We have already made it possible for our customers to use excess energy to charge their own e-vehicles via the wallbox, and we continue to work towards increasing the user options, so that energy is always available wherever it is needed.

Determine your own energy supply: the S10 home power plant functions simultaneously as an accumulator for the power produced autonomously, and as a control centre for the distribution of the stored electricity, for various purposes. The result: a genuinely autonomous, flexible and demand-oriented supply – free of charge and up to 100 % self-sufficient.

Our Vision

Self-determined energy supply

Determine your own energy supply: the new era of energy management begins with the option of using solar-generated electricity 24 hours a day. Thus the S10 home power plant acts both as an accumulator for the power produced autonomously and as a control centre for the distribution of stored electricity, for various purposes.

The result: a genuinely autonomous, flexible and needs-oriented supply – free of charge and up to 100 % autonomous.