Eos Energy Enterprises’ leadership has claimed gross positive margins can be achieved in a year and a half. 

From data centres to long-duration storage for the grid, zinc looks increasingly likely to play a part in the energy transition, writes Dr Josef Daniel-Ivad from the the Zinc Battery Initiative.

News in brief from around the world in energy storage.

Germany company Voltstorage, claiming to be the only developer and maker of home solar energy storage systems using vanadium flow batteries, raised €6 million (US$7.1 million) in July.

Australian stock exchange-listed flow battery manufacturer Redflow has scored a second order for its devices from the Rural Connectivity Group, a New Zealand-based telecommunications company.

“The bottom line is that this is a good business decision. We will get back our money in eight to 10 years at the current price of power. As the price of energy goes up, we’ll pay it back even quicker.”

Australia-headquartered flow battery maker Redflow is continuing with a strategy of selling devices into the telecoms sector, agreeing on a second deal to repower mobile phone towers for a South African provider.

‘Hybridising’ energy storage systems by combining lithium-ion and flow batteries, shares the power and energy application workloads between the two types of battery and can prolong their life expectancy, a representative of Thai engineering firm TSUS Group has said.

Redflow will provide 32 of its zinc-bromine flow batteries to two new children’s centres in its native Australia.

First developed by NASA, flow batteries are a potential answer to storing solar – and wind – for eight to 10 hours, far beyond what is commonly achieved today with lithium-ion. In the second of a two-part special report, Andy Colthorpe dives deeper into questions of bankability, market segmentation and manufacturing strategies with four very different providers of flow energy storage technology.