The green electrons that have begun to flow into the Free State mine shafts of Harmony Gold will reduce carbon dioxide emissions by 65 000 t in the first 12 months of operation, Mining Weekly can today report. The 30 MW solar photovoltaic plants are well on their way towards delivering 70 GWh of renewable energy a year to the Johannesburg Stock Exchange-listed company’s Free State operations, as part of the first phase of a far-reaching programme to improve Harmony’s energy mix and ensure that it achieves carbon zero status by 2045.