Our methods



At ifeu, a range of state-of-the-art modelling tools are available for the quantification of technology and societal developments, environmental impacts, course of action, and impacts of policy or social interventions.

Close-up of keyboard, calculator and pen

Calculation tools

CO2 citizen calculator, waste calculator, building material assessment, municipal balancing tools – ifeu has developed these and other calculation tools in the context of scientific projects.

Wooden toy cubes on a brown wooden background


Instruments of quality control are more and more important for both public relations and the development and optimisation of policy programmes in the environmental sector. In consequence, ifeu has developed a strong focus on evaluation and accompanying social science research in recent years.

Earth and moon seen from space

Sustainability assessment

In recent decades it is hard to think of any other term that has been so widely encountered and frequently misused as “sustainability” – or better still – “sustainable development”. ifeu has further developed the methods of sustainability assessment in many projects over recent years.

© CarthasisVectorielle / fotolia

Life cycle assessment and material flow analyses

Life cycle assessments and material flow analyses are two of the most common methods used to map the potential environmental effects of products, processes, services and behaviour, and have been in use at ifeu since the end of the 1980s as key environmental assessment tools.

© Bits and Splits / Fotolia


We define participation as the involvement of all stakeholders at the early stages of project planning to enable true cooperation with citizens and experts in both the planning and the implementation of a project. Participation is an essential characteristic of all our projects, e.g. Sustainable Energy and Climate Action Plans.

The pedestrian suspension bridge called Highline 179 in Reutte, Austria. Bring together the Ehrenberg Ruins and Fort Claudia. Height of the bridge 114 metres

Risk analysis

ifeu conducts risk assessments, undertakes exposure analysis, and draws up environmental pathway models to evaluate chemical substances and radiation protection.

heizkraftwerk-nord, photovoltaik, münchen


ifeu provides support with Environmental Impact Assessments (EIA) and Strategic Environmental Assessments (SEA) in the form of comprehensive studies, reviews and consultancy.

Death and desolation in the Tinto River, Huelva, Spain. As a possible result of the mining, Rio Tinto is notable for being very acidic and its deep reddish hue is due to iron and copper dissolved in the water.

Life Cycle Impact Assessment

Ongoing work at ifeu continues to develop and update Life Cycle Impact Assessment methodology as part of Life Cycle Assessment. Our in-depth knowledge of indicators and models allows expert assessment of potential environmental impacts with appropriate methodology.