Electricity production, storage, and consumption are today increasingly based on direct current (DC). The transfer of DC offers several technical and economic advantages, especially in environments with high power demands.
As part of its technological work, the Bothnia Green Energy project has explored the potential of DC solutions. In spring 2025, AFRY conducted a techno-economic feasibility study aimed at analysing the conditions for local DC grids in two practical applications: a parking facility for Umeå Parkering AB (UPAB) and an industrial charging solution at Alholmen Industrial Park (AIP) in Jakobstad.
The study examined how DC solutions could be applied in each case, and what benefits they might offer compared to conventional AC solutions – particularly in supplying power and energy for electric vehicles.
The results consist of two parts:
- An open Excel-based calculation tool, where users can input their own conditions to compare the performance and economics of DC and AC solutions. The tool also allows optimisation of system sizing, such as solar PV and battery storage.
- A report presenting the analysis and research questions from a qualitative perspective. The report is publicly available to everyone.
See the results of the feasibility study on the Bothnia Green Energy pilot page.
