The international company specializing in renewable energy projects, Berkeley Energy, has already invested US$1.5 billion in the construction of hydro, wind and biomass photovoltaic plants in various locations across the country. The information was provided by the executive director of Berkeley Energy, Luka Buljan, at the International Conference on Renewable Energy, held recently in Luanda, under the aegis of the Ministry of Energy and Water, in partnership with the Lusófona and Angolan associations of Renewable