UNELCO holds 4 geographical concessions, being EFATE island, the two administrative centres of Norsup (MALEKULA) and Lenakel (TANNA) for the provision of electricity, as well as the capital, Port Vila, for the supply of water.

UNELCO is a locally incorporated company, having 2 majority shareholders : GDF Suez (85.59%) and Electricité et Eau de Calédonie (14.40%).

UNELCO can rely on the support of the GDF SUEZ Group, European leader in terms of energy and gas services, world leader among the independent power producers (IPP) and liquefied natural gas (LNG).