Sinimäki substation responding to increasing electricity consumption
We built the new Sinimäki substation in Nuijala, Espoo, which responds to the increasing need for electricity in the area. The substation also supports the strategy of the carbon-neutral City of Espoo and its pioneering role in clean energy solutions. The new substation replaces the previous Nuijala substation. Caruna Espoo Oy ordered the work, and we implemented it as a turnkey construction contract.
The construction of the new substation includes construction work on the transformer and switchgear building and the yard and land areas. We delivered, installed, and deployed 110 kV and 20 kV systems. In addition, we constructed two 110 kV underground cable connections between Leppävaara and Nuijala, totalling around 6.1 kilometres.
There has previously been a popular outdoor trail at the site, which we rebuilt in autumn 2022. In cooperation with our partners, we carried out directional and horizontal drilling for electric cables in areas with railways, roads, ditches and soft ground.
The safety of residents and employees has been taken into account
In addition to residential buildings, there was more traffic in the area than usual during our construction work. We considered the safety of our employees and the residents of the area all the way from the design stage. For example, we had the traffic control plan approved by the City of Espoo in advance.
To ensure safe working, we have de-energised the 110 kV power lines in the area influenced by the stabilising and piling machines. Due to the soft soil in Sinimäki, we have also strengthened the ground in the area to ensure the safe movement of work machines.
