Expanding the brochure Approach CO2 emissions in business (general introduction to CO2 neutrality and approach wvi, and outline the building blocks for energy-neutral industrial - for members) to a more practical guide for project managers and - Contributors: adding examples of farm, industrial and business clustering, more detailed information for the realization of projects by the project teams, and integration with the 19 sustainability principles for the development of industrial estates. Internal training for project teams.