Enersense International Plc won a contract in Fingrid's public bidding process at the beginning of the year for the construction of three new 110 kV substations in the Harjavalta area. The substations will be built as gas insulated switchgear (GIS) using a gas insulation solution that does not contain any SF6 gas which is a significant greenhouse gas. As part of the project, Enersense's delivery includes all steel structures to be built in the substation area, requiring a total of 76,000 kg of steel.

The structures consist of 110 kV transmission line portals to be build in the substation area. There will be substation portals for connecting a total of fourteen transmission lines and they will be made of hot-dip galvanized steel. Through its partners, Enersense procures all the steel structures in question as low-emission steel.

In this project, low-emission steel means that the structures to be delivered are made of recycled steel and their carbon dioxide emissions are, on average, approximately 40% lower compared to structures manufactured using iron ore-based production methods. The project is Fingrid's first of this scale in Finland where all steel structures in the substation area will be delivered made of low-emission steel.