The 140MW Kangnas site near Springbok, Northern Cape and the 110MW Perdekraal East project, 80km northeast of Ceres, Eastern Cape, were awarded licences under the fourth round of South Africa’s Renewable Energy Independent Power Producer Procurement Programme (REIPPP) in June 2015.
But the projects were then delayed after the long-running power purchase agreement dispute, hindered by political chaos, which crippled South Africa's wind sector for almost two years.
Mainstream announced SGRE as turbine suppliers when it completed the financing for the sites in early June 2018.
Today, SGRE said it would supply 109 SWT-2.3-108 turbine models to the two sites from 2019. Both projects are due online in 2020.
SGRE has installed 324MW in South Africa to date, including Mainstream's operating capacity there, with a further 280MW under construction, the manufacturer said.