Energy Storage

Mining giant Rio Tinto has tapped NRW Holdings to begin construction of a large-scale solar PV and battery energy storage system at the Anglo-Australian multinational’s $2.6 billion Gudai-Darri iron ore mine in Western Australia.

The TotalEnergies-controlled solar manufacturer will secure an, as yet undetermined chunk of a new €118.6 million low-carbon innovation fund to start producing its frameless, glass-free solar roofing products at Porcelette, in northeastern France.

It’s a breakthrough so staggeringly simple the patent office needed convincing it counted as an invention. In what Professor Thomas Nann jokingly told pv magazine Australia basically equates to adding dishwashing liquid and oil to water, he and two of his former PhD students have unlocked the potential of water-based electrolytes for batteries, promising a solution that is cheaper, easier to manufacture and non-toxic. The startup plans to initially use the formula in supercapacitors before exploring it in conjunction with redox flow batteries.


The federal government has allocated $25.6 million to support 20 microgrid feasibility studies, including in communities affected by the Black Summer bushfires, which left regions without power for weeks.

Households with residential batteries have doubled in Queensland in the last two years, though cost remains a barrier – as it has with electric vehicles. As prices fall, however, the state is likely to welcome the technology with open arms, as it has with solar. 37% of Queensland households now harvest the sun’s energy and a further 22% looking to install or upgrade their systems, according to the government’s Queensland Household Energy Survey. Of those with solar systems, 93% would would replace their panels with the same size or larger, if they were to fail.

The City of Melbourne is planning a network of co-ordinated community batteries to be installed at council sites across the city, aiming for a potential capacity of 5 MW by 2024.

Victorian solar company RACV Solar has continued its expansion strategy with the acquisition of Great Ocean Solar and Electrical, a solar and battery installation business based on the Bellarine Peninsula in the state’s southwest.

Boston startup Form Energy has secured US$200 million (AU$270 million) Series D funding for the development of what is being called a breakthrough in energy storage.

Sax Power has developed a new residential battery which it describes as a game-changer in the battery technology.

A gigafactory, as the name indicates, is a facility that aims to produce Li-ion cells at a gigawatt-hours scale of total capacity, so they can then be used in electric vehicles or stationary storage applications. The global production capacity of Li-ion cells is expected to reach 740 GWh by the end of 2021 – almost a threefold increase from 2017 – and Europe will account for 8% of the total. João Coelho, an analyst at Delta-EE, looks at how Europe plans to catch up.