The aim of the project Protect-DG — New technologies for managing power grid failures and distributed generation was to study and develop new solutions for both the failure management of the medium-voltage network and the control of small-scale production plants in the network. The development of new technical solutions is a prerequisite for the cost-effective expansion of distributed generation to the electricity distribution network. At the same time, societal demands for increased security of electricity supply have increased. As a result, electricity distribution networks have shifted to large-scale ground cabling, which in turn requires advanced methods of trouble-locating. The project developed, for example, a new method of fault detection by the University of Vaasa. In addition, the project demonstrated the use of the IEC 61850 standard for small-scale production control, island block protection and arc protection. The project created ways for distribution network companies to meet tighter security of supply requirements and improves the technical capacity to exploit small-scale local production. Manufacturing companies utilise the results of the project in their product development aimed at success in the global market. The market potential of fault-locating solutions and distributed production management products is significant. The research was carried out in cooperation between the University of Vaasa and the University of Lappeenranta (LUT). The project was funded by companies that provided technical support and expertise for the project.