International assessments show that Fingrid has world-class main grid asset management. Properly timed and properly dimensioned investments keep the main grid in excellent operating condition. Investments of approximately 100–150 million euros are made each year.
Fingrid has made an investment decision concerning construction of the 400 kV Forest Line through Finland. The transmission line will run from Petäjävesi to Muhos and strengthen electricity transmission connections in the north-south direction.
Fingrid has had several transmission line worksites in progress this year. The next five projects – covering 600 kilometres of new transmission lines – are already in the final phase of planning. This is a sign of the need to renew and develop the main grid for future needs.
International studies have shown that Fingrid transmits affordable electricity with good quality control. Fingrid was found to be affordable in both a study by the European Network of Transmission System Operators (ENTSO-E) and a study commissioned by European energy regulators. A significant success factor was efficiency in construction and maintenance.
The new Länsisalmi substation is important for the electricity supply of Helsinki and Vantaa and for the development of energy supply throughout the area. The opening ceremony for the newest landmark in Vantaa was held on Tuesday 27 March 2018.