The Kingdom Tower stands in the night above the Saudi capital Riyadh November 16, 2007. REUTERS/Ali Jarekji (SAUDI ARABIA) - GM1DWPNRBQAA
The Kingdom Tower stands in the night above the Saudi capital Riyadh November 16, 2007. REUTERS/Ali Jarekji (SAUDI ARABIA) - GM1DWPNRBQAA

Acciona awarded $384m contract to build desalination plant in Saudi Arabia