A court hearing on Tuesday will determine whether South Africa can move forward with a project to top up its energy capacity after a year of record power blackouts. The ruling will also be critical for the businessman who blocked the plan with his lawsuit. The country’s efforts to add power capacity with an emergency program ground to a halt when 39-year-old Aldworth Mbalati’s DNG group of companies sued the government alleging corruption in the award of a contract. DNG, which has UK politician Peter Hain on its board and, according to Mbalati, counts Helios Investment Partners among its backers, lost the case in South Africa’s High Court in January. It applied to appeal, a decision on which will determine whether the project will be stalled further.