The OMVG will have around 300 km of a 225 kV transmission line in Guinea Bissau,and four high-voltage 225/30 kV substations (Mansoa,Bissau,Bambadinca and Saltinho). This page lists the main power stations in Guinea contributing to the public power supply. There are also a number of private power plants supplying specific industrial users such as mines and refineries. Guinea is considered to have considerable renewable energy potential. Schemes at an advanced. . The project, owned and operated by AES Distributed Energy, consists of a 28 MW solar photovoltaic (PV) and a 100 MWh five-hour duration energy storage system. AES designed the unique DC-coupled solution, dubbed “the PV Peaker Plant,” to fully integrate PV and storage as a power plant. [pdf] This. . "The power station is comprised of 16km of underground tunnels below Elidir Mountain," says First Hydro station manager John Armstrong. "Its construction took ten years to complete, and required one million tonnes of concrete, 200,000t of cement and 4,500t of steel.