VRFB Project at Eskom
The VRFB was installed at a minigrid at the Eskom Rosherville Energy Storage Test site, in southern Johannesburg. The system is designed to provide peak power of 120 kilowatts and deliver peak energy of 450 kilowatt hours. The project is co-developed by Bushveld Energy and the IDC and it integrates a VRFB, an inverter and a transformer, all of which are connected into an Eskom site-controller that operates the VRFB from an existing SCADA package.
The Vametco project is a first-of-a-kind commercial installation of a Mini-Hybrid solar and battery grid feeding directly into the Vametco Mine’s internal Network. It is unique in that it has been developed by independent investors and investment banks and is totally funded outside of the mine’s balance sheet. This project is a nett 1MW hybrid mini-grid with a 2.5MWp solar farm, feeding both the internal Network and the 1MW, 4MWh Vanadium Redox Flow Battery, which will also be charged from the Grid at night-time Off Peak rates. It can provide stable power to the internal network for up to 16 hours per day, thereby providing Load Shifting benefits and Peak Demand Reduction benefits, as well as stabilising the Power Quality of the Network and reducing Reactive Energy charges.