TwinReg is a joint project between the Helsinki-Uusimaa Regional Council and the Union of Harju County Municipalities in Estonia. The project aims to strengthen strategic planning and cooperation in the Helsinki-Uusimaa–Harju twin region.
The project will create a platform for dialogue, identify key bottlenecks in cross-border cooperation and define the themes and areas where cooperation can be further developed. At the same time, the project contributes to establishing the conditions for the long-term goal of a permanent cooperation model and structure between Helsinki-Uusimaa and Harju.
The project supports the objectives of the memorandum of understanding signed by the Helsinki-Uusimaa Regional Council and the Union of Harju County Municipalities at the end of 2022. These objectives include strengthening the regions’ international attractiveness and accessibility, as well as closer regional integration.
The project is funded by the Interreg Central Baltic Programme. The Union of Harju County Municipalities acts as the lead partner and the Helsinki-Uusimaa Regional Council as a project partner. The total budget of the project is approximately EUR 213,536, of which the majority is covered by EU funding.
The project “TwinReg – Improving Helsinki-Uusimaa and Harju TWIN REGion cross-border strategic planning, citizen service and cooperation frameworks” runs from 1 June 2025 to 30 November 2026.

For more information, please contact:
Sakari Saarinen
Senior Adviser
sakari.saarinen@uudenmaanliitto.fi
International transport, nature impact assessment of transport, project administration and funding programs, Scandria Alliance, drones, project TRACER-X.
Current
Cases
4.11.2026
A more efficient nutrient cycle and clean potato stocks – Interreg projects boost Finland’s food security
Domestic food production is a pillar of Finland's security of supply. However, the sector is challenged not only by geopolitical crises but by climate change and the need to reduce production emissions. The Interreg projects have responded to these challenges through international cooperation. Some of the project's focuses have been on promoting the use of recycled nutrients and reducing the nutrient load ending up in waterways.
News
26.10.2026
TwinReg strengthens cooperation between Helsinki-Uusimaa and Harju County
Through the TwinReg project, the Helsinki-Uusimaa Region and the Union of Harju County Municipalities have strengthened joint regional planning and explored solutions to everyday cross-border challenges. The project’s final seminar in Tallinn on 22 October brought together policymakers, regional development professionals, researchers, businesses and experts to discuss its findings and the future of cooperation.
This page was last updated: 31.8.2026