GP JOULE EPC goes ahead and is now twice certified by TÜV Rheinland

ISO certificates for quality and environmental management - for even more transparency, consistency and sustainability

GP JOULE EPC goes ahead and is now twice certified by TÜV Rheinland

Reußenköge/ Geislingen an der Steige, 14 March 2023

GP JOULE EPC, the general contractor for renewable energy plants, has been awarded two seals of approval by TÜV Rheinland: ISO 9001 for quality management and ISO 14001 for environmental management. GP JOULE EPC is a specialist in the technical planning, construction and grid connection of megawatt-class ground-mounted photovoltaic systems. Since 2020, hydrogen production plants and filling stations have also been part of the portfolio.

The certification was preceded by about a year of preparation. Extensive analyses were carried out, numerous discussions were held with suppliers and subcontractors. And all the effort turned out to be successful: The certifications now obtained were awarded without the need for resubmissions.


"We have driven the certification process forward with a lot of commitment and are highly satisfied with the result. But we will not rest on our laurels," says Maximilian Sellmaier, Quality Management Officer at GP JOULE EPC. "ISO 9001 is characterised by the fact that our customers receive consistent quality at all times and in all places. We are starting at a high level and our ambition is to improve steadily from here. ISO certification provides the right framework for this. The underlying analytical process and the insights gained from it are a solid basis for continuous development and healthy growth," Sellmaier explains.


DIN standard for reliable quality and sustainability

So far, the certificate for environmental management in particular is still rarely represented in the industry. "We like to be pioneers and hope that many will now follow suit," says Klaus Ziegler, Environmental Management Officer at GP JOULE EPC. "It’s not enough to simply build good plants. The construction itself must also be good, i.e. reliable in quality and reduced as far as possible in its emissions. The same applies to the preliminary planning work."


"We are positioning ourselves at an early stage for the demand of future clients and investors, because the classification at EU level for green investments, for example, is becoming increasingly detailed - and rightly so," explains Matthias Lamp, Managing Director of GP JOULE EPC.


The environmental management of a company is certified with the DIN standard ISO 14001:2015. It evaluates all areas of both its own work and that of downstream service providers and manufacturers. "Every construction site is an intervention in nature. We want to keep the negative impact as low as possible," explains Meik Georg Gessner, also Managing Director of GP JOULE EPC. A wide range of areas are examined, such as access routes, land compensation, greening, species protection, noise protection, CO2 emissions on transport routes, an office that is as environmentally friendly as possible and much more. Specifications of the so-called "interested parties" are also analysed in the course of the procedure, i.e. the clients, legislators and nature conservation associations.


The second certificate according to DIN standard ISO 9001:2015 assesses the quality management in a company and looks at management structures and process flows for this purpose. The aim is to bring reliability to processes and structures and to establish procedures so that every customer receives consistently high-quality work at all times. This applies to work in the office as well as on the construction site.


GP JOULE SERVICE has also been ISO-certified

The plant manufacturer is not the first division of the GP JOULE Group to undergo the review. GP JOULE SERVICE has been awarded ISO 9001 certification.. This means that quality management in the technical and commercial management of wind farms and solar parks has also been awarded by TÜV NORD.


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About GP Joule
As an integrated energy supplier, GP JOULE is active in all areas of the energy value chain: from generating to using energy, from consulting to financing and project planning to construction and service. GP JOULE produces and markets wind and solar power, green hydrogen and heat and makes use of it where it is most effective: in electric and hydrogen-based mobility, in households and in industry. GP JOULE has been shaping the future of energy in Europe from Germany since 2009. With the aim of delivering a secure, independent and sustainable supply of energy. 100 % renewable energy for all.


The company's main locations are in Buttenwiesen, in the district of Dillingen, and in Reußenköge in North Frisia, where the founders and former fellow students Heinrich Gärtner and Ove Petersen each took over their parents' farms after studying agricultural engineering and expanded them with company offices. Around 600 people work for the medium-sized group of companies in Germany, Europe and North America.

GP JOULE was awarded the German Mobility Prize 2022 for the hydrogen mobility project eFarm.


Press contact
Jürn Kruse
Corporate Communications
GP JOULE Gruppe 
Tel. +49 (0) 4671-6074-213
Mobil +49 (0) 160-1540265
GP JOULE GmbH     Cecilienkoog 16  •  25821 Reußenköge  •