HH Sayyid Bilarab Inaugurates Oman’s Largest Solar Power Plants Manah 1, Manah 2 Muscat, 20 Jan (ONA) --- HH Sayyid Bilarab bin Haitham Al Said today inaugurated Manah 1 and Manah 2 solar power plants in the Wilayat of Manah in the Governorate of Al Dakhiliyah. The plants, which occupy an area of​​ 14.5 million square metres, have a production capacity of 1,000 megawatts.