Electricity equipment multinational Hitachi Energy has signed a long-term service agreement with the Democratic Republic of Congo’s (DRC’s) Société Nationale d’Electricité (SNEL) to secure power supply in the country’s most important power transmission asset – the Inga-Kolwezi high-voltage direct current (HVDC) link. The link supplies up to 1 000 MW of emission-free electricity from the Inga Falls hydropower plant in the far west of the country to the Kolwezi mining region in the south. With a length of 1 700 km, it is the longest HVDC link in Africa.