DEN - Deutsches Energieberater-Netzwerk e.V.

About us (EN)

Das Deutsche Energieberater-Netzwerk e.V. / The German energy adviser's network

The German energy adviser’s network (DEN) is a union of engineers, architects and technicians. The common scope of work connects all members: Conseling and planning achievements for power-saving building activities and modernising of buildings as well as the optimisation of energy efficiency in the trade and in local authority districts.

Since the establishment of the association in 2001/2002, more than 700 offices joined the network and offer their services all over Germany.


Another common characteristic of the network is the neutrality and independence: The members draw no commissions or other purpose-engaged allowances of manufactures, craftsmen or traders with their work. Since an independent consultation makes simply sure – and helps to make the right decisions at the right time.

Also the industry recognises that an independent advice is more caused. This is why a growing part of the networks budget comes from sustaining memberships of famous manufactures of power-saving building products.

The association makes available a common platform for its members – together a lot is simply better and more favourably. This isn’t valid only for shopping communities or the insurance cover, but also for the offer of our customers: Knowledge transfer and the common treatment of national orders on local or nationwide networks create market advantages.

Our certified members provide their knowledge and their comprehensive experience also as advisers in our DEN-academy, the educational institution of the German energy adviser’s network (DEN).

The board of directors


Marita Klempnow

After completing her degree in civil engineering and various activities in the field of energy, she founded “ leben bauen wohnen” an office for building biology and energy consulting. For years Marita Klempnow has been spokeswoman for the board of DEN e.V., especially in Berlin, and since 2020 she has been on the executive board of DEN e.V. Her focus is on representing the interests in Berlin, quality assurance of energy advice and further development of the funding programs. The development of a job profile for energy consultants and a uniform fee schedule are also part of her goals. Together with Mr. Dannecker, she is responsible for the development of the association and lobbying the federal authorities (BMWi, BMU, dena, KfW).

Dipl.-Ing. Energie- und Wärmetechnik (FH)

Hermann Dannecker

As an architect, Hermann Dannecker is a founding member of the German Energy Advisory Network and has been a member of the Executive Board since 2002. He played a decisive role in the structure of the association structures. Mr. Dannecker leads the contacts with other interest groups at the federal level. A major concern is the quality assurance for energy consulting, which he also pursues within the DEN e.V. (DEN-QS). As a board member, he is responsible for lobbying at the federal authorities (BMWi, BMU, dena, KfW) and is a member of BfEE (Federal Office for Energy Efficiency, Principle Issues, Federal Office of Economics and Export Control).

The administrative council

Dipl.-Ing. Peter Ackermann-Rost Berlin Berlin/Sachsen-Anhalt
Dipl.-Ing. (FH) Jutta Maria Betz Nürnberg Bayern
Dipl.-Ing. Rolf Canters Murrhardt Baden-Württemberg
Dipl.-Ing. Sandra Limke Quern Schleswig-Holstein
Dipl.-Ing. Peter Ackermann-Rost Berlin Brandenburg
Dipl.-Ing. / M.Sc. Stefanie Koepsell Leipzig Sachsen
Dipl.-Ing. Raymond Krieger Bremen Bremen, Hamburg
Dipl.-Ing. Jürgen Lange Paderborn Nordrhein-Westfalen
Dipl.-Ing. Frank-Stefan Meyer Waldrach Saarland
Dipl.-Ing. Dietmar Rieth Neuwied Rheinland-Pfalz
Dipl.-Ing. Rolf Schade Katzow Mecklenburg-Vorpommern
M.A. Winfried Schöffel Weimar Thüringen
Holger Lorenz Buseck Hessen
Christian Rösemeier Hess. Oldendorf Niedersachsen

Administration members

Dipl.-Ing. Horst Endrich Zellingen Bayern
Klaus-Jürgen Friedrich Bad Kreuznach Rheinland-Pfalz
Ir. MSc. Pim Hamminga Großostheim Bayern
Dipl.-Ing. Jürgen Henke Stuttgart Baden-Württemberg
Dipl.-Ing. (FH) Hinderk Hillebrands Norden Niedersachsen
Dipl.-Ing. (FH) Siegfried Mayr Thierhaupten Bayern
Dipl.-Ing. Christof Peter-Dosch Billerbeck Nordrhein-Westfalen
Dipl.-Phys. Peter Pospischil Neuötting Bayern
Raffael Rackwitz Berlin Berlin
Peter Preisendörfer Sulzbach Hessen
Dipl.-Ing. Alexander Schmuck Schwanewede Niedersachsen
Dr. Robert Staiger Auchheim Baden-Württemberg
Dipl.-Ing. Peter Uenning Ostbevern Nordrhein-Westfalen
Dipl.-Ing. Michael Zarse Castrop-Rauxel Nordrhein-Westfalen


The Office

in Offenbach am Main
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