It’s been predicted for some time that the redox flow energy storage space will, after some turmoil and rapid consolidation, find success in providing energy storage at durations of more than four hours. This past couple of weeks have been a tale of both turmoil and success.

Flow battery manufacturer VIZn Energy has confirmed that nearly all its employees have been “furloughed” amid financial difficulties, but denied that the company has exited the business altogether.

Primus Power, a flow battery maker which claims its systems can cost less than half the price of lithium-ion energy storage over its lifetime, is establishing manufacturing lines in China.

An energy storage market and tech analyst has told Energy-Storage.News a decision by flow battery maker Redflow to shift focus away from the residential market signals that it is “highly unlikely” the technology can compete with lithium-ion in that space.

Australian flow battery manufacturer Redflow has resumed battery deliveries after laboratory test results revealed that a significant number of batteries in stock meet the company’s quality standards, enabling immediate delivery to customers, and scored a AU$800,000 order.

Australia-based flow battery provider Redflow has paused deliveries of new batteries after a number of unexpected product mode failures during remote monitoring at customer sites, according to a filing on the Australian Stock Exchange.

Chinese energy storage company TrinaBEST launched its residential storage product for the Australian market at last week’s All Energy show, while the USA’s Enphase and Australian flow battery maker Redflow were among the other exhibitors showcasing residential products.

Andy Colthorpe and Ben Willis profile some of the companies and technologies making waves in the fast-changing world of stationary energy storage, in a feature article which originally appeared in the seventh issue of PV Tech Power.

Anthony Price of consultancy Swanbarton previews the International Flow Battery Forum in Germany with a quick primer on the technology, its uses and some of the players attending the event.