Sufficiency, as a third sustainability strategy, focuses on consumer and user behaviour with the goal of decreased absolute resource and energy consumption. Ifeu explores and integrates this topic in a number of projects.

The term sufficiency derives from the Latin ‘sufficere’ and may be translated as ‘to be adequate’ or ‘enough’. Sufficiency is a sustainability strategy with a key focus on the question ‘How much do we need, and why?’ It is based on a personal and societal definition of the right measure, i.e. the balance between the satisfaction of existing needs and the consumption of resources, and associated negative environmental impacts. Sufficiency seeks a change in attitudes towards time, space, market, property, and existence. Thus, a resource-light, solidary, comfortable and future-proof lifestyle and business practice may be enabled, facilitated and encouraged.

Our key research topics


Energy sufficiency

Energy sufficiency is a strategy to reduce of energy consumption through changes in technology use and other use aspects. Ifeu seeks and explores alternatives for action and practice, approaches for energy-sufficient appliance design, and beneficial infrastructure to contribute to a resource-light everyday life.


Sufficiency policy and tools

Policy measures, instruments and frameworks are required to share the responsibility for sufficiency with the individual consumer. Ifeu develops approaches for a sufficiency policy on the local, regional and federal level to promote the transformation into a sustainable energy system.


Lars-Arvid Brischke

PhD in Energy and Process Engineering
Phone: +49 (0)30 2844578 18