TAUSTAPäijät-Häme Province and municipalities have set targets to promote a low-carbon economy. Low carbon can be promoted, among other things, by increasing the use of renewable energy sources and by improving companies’ energy and material efficiency. In addition, regional industrial symbiosis, for example, is one way of promoting low-carbon society.Objective of the project is to promote energy and material savings for businesses and the use of renewable energy sources. To achieve this, the aim of the project is to find methods and solutions that promote energy and material savings and the use of renewable energy sources for businesses, and to provide a description of these, which is widely available to other companies. The aim of the project is to create a regional energy ecosystem and industrial symbiosis related to energy use between Nastolian industrial plants and companies along Kouvolatie, describing the framework conditions, networks and opportunities for cooperation. The regional energy ecosystem created can also be used to develop similar systems in the future. In addition, the aim is to provide user-driven and easily understandable information to promote low carbon at national and international level. As measures, the project will map the results of energy audits of the companies involved and, if necessary, re-evaluate the company at different times of the year. This will provide company-specific data on the consumption of electricity, heat and water and their savings targets, as well as information on the use of renewable energy. The project also pilots material audits of companies. As a measure of the project, a regional industrial symbiosis will be developed where, for example, waste heat from another company can be utilised in another location. The centralised use of renewable energy sources in the region and the possibility of creating a regional energy ecosystem will also be explored. The study requires a common vision and will from the companies involved in the cooperation. The processing of the information obtained from the reviews requires simultaneous optimisation of a wide range of issues and different scenarios analyses. To achieve this, the project uses a system-oriented design that allows the network to be formed in the energy ecosystem. In addition, the measures use information design, which in turn enables the results to be visually illustrated and reach a wide range of target groups. PRODUCTSThe results of the project contribute to the energy and material efficiency of companies and to the low carbon society. Businesses will also receive information on new resource-saving technologies and renewable energy potential. The project will result in a publication outlining the potential for saving companies’ electricity, heat, water and materials (including practices and new technologies) and renewable energy. The project will result in a description of the regional energy ecosystem and industrial symbiosis that contribute to the exploitation of regional material and energy flows. The energy ecosystem contains descriptions of the regional network and forms of cooperation. This network enables companies to invest centrally in renewable energy solutions and promote regional energy independence. Consumer-oriented visual descriptions of the results of the reviews and regional industrial symbiosis shall be produced. The results can also be used to support the design of energy ecosystems in other industrial areas and to implement industrial symbiosis. The result is three scientific publications and a web-based application of energy and material flows and industrial symbiosis. The results of the project reach a wide range of target groups, profile the region as a national resource efficiency expert and, in the longer term, provide excellent references to the region, for example to apply for international funding.