Seasonal heat storage, Vantaa, Finland
In the stunning scenery of Western Norway, we built hydropower plants for energy company Småkraft. The construction site could only be accessed by boat or helicopter, which added its own challenges to the contract.
In Fjærland, six hundred metres up a mountain slope from sea level, we had a construction site where we built the Lidal hydropower plant with its inlets, a tunnel spanning 1,500 metres and a 600-metre-deep shaft.
Since no roads led to the construction site, we transported everything we needed there on boats or helicopters. We brought all equipment and machines to the ferry from where we worked – including heavy machinery, lorries and repair facilities.
In demanding projects, planning and logistics must be handled with extra precaution in order not to exceed the budget and schedule. The weather conditions posed their own challenges. On a construction site like this, it’s even more important than usual to ensure safety, and we were prepared for all kinds of exceptional situations, even evacuation.
Working from a ferry instead of a typical land-based site decreased the direct effects of the construction on the environment. We minimised the environmental effects also in other ways, for instance by purifying the water used on site.
The project was initiated in July 2015 and completed in December 2016.