TNO's primary tasks are to support and assist trade and industry, including governments and others, in technological innovation and solving problems by rendering services and transferring knowledge and expertise.  TNO participates in many programs aimed at technological development and cooperates with many organizations in Canada, Europe, India, Japan and USA.

The Climate, Air and Sustainability (CAS) group is an expert center and contract research unit for industry and government in the field of sustainable development and environmentally oriented process innovation.  The unit investigates the processing of anthropogenic pollutants in the atmosphere and their influence on the environment and climate change.