South Africa

Decades of mismanagement have eroded trust in South Africa’s state-owned energy utility, Eskom. Last year, households and businesses suffered daily blackouts of up to 10 hours, or even longer. Solar and battery energy storage are booming but a domestic PV manufacturing industry has yet to materialize.

Researchers in South African have developed a new cleaning system for solar panels that uses a colour-sensing light-to-frequency converter to detect dirt. It can reportedly remove about 95% of the dust from a PV panel in less than a minute, at a lower cost than other systems.

The city authority wants a developer to construct a 7 MW solar project for it as part of a push to widen its sources of electricity, and says clean energy will be cheaper than – largely coal-fired – grid power from Eskom.

With South Africa holding 63,000 of the world’s estimated 69,000 metric tons of platinum reserves – according to the Statista.com website – and Russia and Zimbabwe a further 5,100 between them, the European Commission has cited the metal as an example of a potential supply chain bottleneck that could handicap its grand plans for renewables-powered hydrogen production.

840 million people still don’t have access to electricity today, according to the World Bank. But the radical decrease in the cost of the green technologies of solar and battery storage provides an unparalleled opportunity to close this gap and achieve universal electricity access by 2030.

South African scientists have used a PV system to keep tomatoes in cold storage. They linked an air-cooling system and evaporative cooling tech to a 3.5 kW array and 12 batteries and tested it for 28 days in September.

Brisbane-based battery supplier Redflow has joined forces with smart energy system company carbonTRACK to add virtual power plant functionality to its flow batteries.

The Minerals Council South Africa has urged the government to solve the country’s energy crisis by adding more power generation capacity from both distributed and large-scale renewables. Meanwhile, several mining companies operating in South Africa are planning their own big solar parks, including two 200 MW facilities under development by Sibanye-Stillwater and Vedanta.

The building-sized trucks run on diesel and prompt logistical complications as large amounts of diesel must be shipped to remote mining sites. Attempts to decarbonize the mining sector will have to consider the heavy-duty vehicles.

Redflow has won a significant order of its ZBM2 zinc-bromine flow batteries for mobile phone tower sites across South Africa in a deal which should see the Australian energy storage company receive revenue this calendar year.