Redflow, the Australian manufacturer of flow batteries, announced its half-year results on 26 February. They were not encouraging. For the six months to 31 December 2018 (H1 2019) revenue was AU$0.5 million, down from AU$1.2m for H1 2018, while the loss increased from AU$3.8m to AU$4.9m (AU$1.8 = £1). In fact these results were not [...]
We often read that batteries can solve the problem of intermittency in wind and solar sources. Batteries can certainly help and are useful for short-term storage or time-shifting over a few hours. For longer periods of a day or more the size and cost of batteries become prohibitive and other solutions will be needed. To [...]
The transition to electric vehicles (EVs) is going faster than anyone expected. Major Western car manufacturers are now regularly presiding over the launch of electric cars not least because of ever tightening emission requirements. China, too, has made clear its intention to be a world leader. In this field, improved battery performance is crucial. For [...]
On 30 August Redflow, the Brisbane-based manufacturer of Zinc-Bromine flow batteries, announced that its revenue for the year to 30 June 2018 was Australian$1.8 million (£1m) for a loss of A$12m. Corresponding results for the previous year were A$1.4m and A$12.9m. Redflow describe 2017/18 as a turnaround year: it was certainly turbulent, with the manufacturing [...]
Two recent news items show that flow batteries are starting to receive more attention. In the first, RedT announced the sale of two systems, each with an energy storage capacity of 40MWh, to the German company Energy System Management GmbH (ESM). These are to help maintain equilibrium between supply and demand and to assure a [...]
Pumped Storage is the method of storing electrical energy by using it to pump water from a low-level to a high-level reservoir. The energy is retrieved by reversing the process, in which the pumps become generators and the water is released back to the lower level. In the UK the best-known example is Dinorwig in [...]
We recently wrote about Redflow’ s involvement in grid and off-grid energy storage through the use of Zinc-Bromine batteries. This article on the exciting developments in battery technology looks at the possibilities for Flow Batteries in this area. The distinguishing feature of a flow battery is that the electrical energy is stored in a liquid [...]
Redflow, the Brisbane-based manufacturer of Zinc-Bromine flow batteries, is in the process of raising A$14.5 million (£8.7m) on the Australian stock exchange. This follows similar exercises in 2016 and 2015 that raised A$12m and A$16m respectively. Is this money well invested? The missing link in the use of wind and solar production has been the [...]
Hydrogen cars are vehicles powered by a single hydrogen fuel cell. The fuel cells work by using a “fuel stack” to use outside air with hydrogen they carry in tanks in a chemical reaction which creates electricity, with the only emission being water. I came across an early prototype of such a car about ten [...]