The Regional Electricity Transmission Company for Cote d’Ivoire-Liberia–Sierra Leone-Guinea has started the construction of the 225 kV Cote d’Ivoire-Liberia-Sierra Leone-Guinea (CLSG) Interconnection Project in Monrovia, Liberia. The groundbreaking ceremony for commencement of the installation of transmission lines took place on June 4, 2017. The CLSG project entails the construction of 225 kV lines spanning 1,349 km across four countries. It also includes the construction of 11 new substations (four in Liberia, five in Sierra Leone and two in Guinea) and expansion of an existing substation in Cote d’Ivoire. In addition, the project will include the development of an optical ground wire network and installation of a supervisory control and data acquisition system at the Regional Control CentreinLinsan (Guinea), which will facilitate interconnection operations. The project is part of the five priority projects of the larger West African Power Pool programme, which will establish a well-functioning and cooperative power pooling mechanism for West Africa. It will provide electricity connections to the four countries, utilise the Bumbuna hydropower plant in Sierra Leone and redevelop the Mount Coffee HPP in Liberia.