Project “LEEN 100“: First network for more energy efficiency starts in Frankfurt /Main


On 24 April 2015 the first network started as part of the project “Learning Energy Efficiency Networks“ (LEEN 100). The participating companies want to also contribute to reducing the CO2 emissions in the region of Frankfurt by accelerated measures in energy efficiency and to increasing the share of renewable energies. This network and some further 40 networks, which are planned starting in 2015 or 2016, will be scientifically accompanied and evaluated by the Fraunhofer Institute for Systems and Innovation Research ISI, the Foundation for Resource Efficiency and Climate Protection (STREKS) and the Institute for Resource Efficiency and energy Strategies (IREES).

© Salome Roessler

Representatives of the City of Frankfurt and the participating companies as well as members of the scientific project team are celebrating the first LEEN 100 network.

© Salome Roessler

Ursula Mielicke explains the extensive experience the LEEN network can build on.

Rosemarie Heilig, City Councilor for the Environment and Health of the city of Frankfurt/Main, kicked off the Learning Energy Efficiency Network Frankfurt Rhein Main on 24 April 2015. In Frankfurt’s city hall she honored the initiative of the participating companies to actively support the city of Frankfurt‘s climate targets. She called improving energy efficiency the “strongest ally for reaching the city’s climate targets“: the currently just under 12 tons of CO2 emissions per inhabitant of the city of Frankfurt (including transport) should be halved by 2030. The objective is to largely meet the remaining energy demand by renewable energies by 2050.

The initiators of the network Frankfurt Rhein Main – in addition to the city of Frankfurt the Arqum GmbH – can build on the experience of the 30 pilot networks (2009 to 2014): in this project even participating companies who expected few possibilities to reduce energy costs were surprised by an increase in energy efficiency of an average ten percent. This is primarily due to the fact that Learning Energy Efficiency Networks pass through a tested procedure: an energy audit with a report and task overview professionally prepared and moderated network meetings so that the energy managers can exchange experiences, conduct site inspections at the respective host participating company and carry out annual monitoring. This reduces search and decision-making costs for the individual energy manager who very often does not have time to focus on the issue. Furthermore, in the closed circle of network participants confidence is growing which often leads to an exchange beyond networking. Last, but not least, the energy efficiency target and the monitoring results make it possible for the individual company to improve its image through credible climate protection.

The Learning Energy Efficiency networks are scientifically accompanied and evaluated by the Fraunhofer Institute for Systems and Innovation Research ISI, the Foundation for Resource Efficiency and climate Protection (STREKS) and the Institute for Resource Efficiency and Energy Strategies (IREES). Ursula Mielicke, a member of the project team, summarizes the results of the accompanying research, “The companies of the 30 pilot networks achieved to double the progress of energy efficiency compared to the average of the industry. 96 percent of companies implemented suggestions by the networks and introduced measures, without the networks 75 percent would have not implemented at least some of them. Consequently 75 percent rated the value added of the Learning Energy Efficiency Networks as high in relation to the effort“.

Additional Learning Energy Efficiency Networks are under construction and will start soon. The first ten networks can receive the incentive of up to 4000,- € per participating company. Information on the project can be found on and

The Fraunhofer Institute for Systems and Innovation Research ISI analyzes the origins and impacts of innovations. We research the short- and long-term developments of innovation processes and the impacts of new technologies and services on society. On this basis, we are able to provide our clients from industry, politics and science with recommendations for action and perspectives for key decisions. Our expertise is founded on our scientific competence as well as an interdisciplinary and systemic research approach.