Energy infrastructure project delivery company OptiPower, which is a trading division of engineering and contracting company Murray & Roberts (M&R), has, in a joint venture (JV) with Spanish energy and water utility Coxabengoa, been awarded a contract to build a 100 MW solar PV plant for an unnamed mining company with operations in South Africa's North West province. The contract is valued at about R1.2-billion, with OptiPower’s share in the JV being 50%, M&R says.