Helen have awarded to YIT (50%, Finland) and ACCIONA (50%, Spain), the EUR400 million contract for a tunnel system in a seawater heat recovery project in Salmisaari, Helsinki. The contract includes design and development of the project, which involves the use of a TBM to build an approximately 17Km undersea tunnel. The tunnel will transport up to 50m3/second of seawater at 2 degrees Celsius, from 70 meters deep in the Baltic Sea, for use in the district heating system of the Finnish capital.
This system will help supply domestic hot water and heating (as well as cooling in summer), in which the heat or thermal energy will be produced in the production plant and distributed through a network of urban pipelines.
The work will start with a development phase expected to last until autumn 2024, for which a contract will be signed. Afterwards a decision will be made on if alliance will move on to the implementation phase, which will take about five years. Visit https://www.helen.fi , https://www.acciona.com and https://www.yitgroup.com/ . 27/22.
