This study was commissioned by the Nordic Working Group for Renewable Energy in January 2008. The report is based on a literature review, interviews of selected companies and organisations and market expertise and analysis of the GreenStream Network Ltd. The report does not present the opinions of the Working Group for Renewable Energy. All the conclusions presented in the report are those of the authors (see below). The report has been prepared by Mr. Juha Ruokonen, Mr. Gunnar Aronsen, Ms. Anna-Maija Turkama, Mr. Kristian Gautesen, Mr. Mats Nilsson, Mr. Juha Ollikainen from GreenStream Network Plc and Mr Atle Middtun from Norwegian School of Management.