As of December 2021, Finland's transmission network comprised about 23,573 km of line length at 500/450 kV direct current (DC), 400 kV, 220 kV alternating current (AC), ±150 kV DC underground cable (UGC) and 110 kV voltage levels. Of the total line length, the majority or about 70.4 per cent was at 110 kV, followed by […]
