Redflow and carbonTRACK collaborate to add Virtual Power Plant functionality to flow batteries

Australian energy storage company Redflow Limited (ASX: RFX) and smart energy system company carbonTRACK today announce an agreement that will enable Redflow zinc-bromine flow batteries to work with carbonTRACK’s energy management system.

This collaboration will deliver Virtual Power Plant (VPP) functionality on Redflow battery systems, enabling customers to leverage carbonTRACK’s intelligent control algorithms to optimise the benefits of Redflow’s flow batteries by tailoring the total power system to each customer’s needs.

carbonTRACK and Redflow will initially explore opportunities to collaborate in the strategically important South African market where both companies have built a presence over the past few years. Challenges caused by the notorious unreliability of South Africa’s national electricity grid provide multiple opportunities for Redflow’s energy storage solution to work with carbonTRACK’s intelligent energy utilisation software. Potential South African target customers include commercial and large residential deployments as well as off-grid energy systems.

Redflow’s flow battery, the smallest production zinc-bromine flow battery in the world, delivers key advantages including long operating life, heat tolerance and no degradation of energy storage capacity with heavy cycling use. This makes it an excellent partner for frequent and regular dispatching by carbonTRACK’s energy dispatching algorithms.

carbonTRACK’s Demand Response, Frequency Regulation, Virtual Energy Trading and Grid Resiliency solutions deliver the VPP Value Chain to Utilities and Transmission System Operators, Energy Traders and System Operators, Financiers, Solar Sales Teams and Solar hardware manufacturers.

carbonTRACK Managing Director
Spiros Livadaras

carbonTRACK Managing Director Spiros Livadaras said the company was delighted to partner with Redflow. “Redflow’s plug-and-play energy storage system, based on its robust zinc-bromine flow batteries, can shift and manage large volumes of energy,” he said. “Our technology complements Redflow’s ability to self-manage, protect and monitor their batteries 24/7.”

Redflow Managing Director and CEO Tim Harris said the collaboration with carbonTRACK added value for customers by providing VPP capabilities to the company’s unique battery solution. “This delivers an important strategic capability by enabling Redflow batteries to become a part of a broader suite of energy assets that can be efficiently monitored, coordinated and controlled,” he said.

“The investment we have made in our Battery Management System (BMS) is a critical enabler which will allow us to deliver VPP capability with carbonTRACK. We see great opportunities to work with carbonTRACK in South Africa and the potential to then target other markets like off-grid deployments in Australia.”

Media Enquiries

carbonTRACK: Isabella Bassanelli – Marketing Manager E:
Redflow: John Harris, E: or P: +61 8 8431 4000.

About carbonTRACK
carbonTRACK LTD is an Australian company headquartered in Melbourne. Its technology is connecting energy generators, energy distributors and energy consumers – delivering embedded networks, Virtual Power Plants and facilitating smart grids. It enables a distributed energy future.
To find out more about carbonTRACK please visit:   

About Redflow
Redflow Limited, a publicly-listed Australian company (ASX: RFX), produces small 10kWh zinc-bromine flow batteries that tolerate daily hard work in harsh conditions. Marketed as ZCell and ZBM2, Redflow batteries are designed for high cycle-rate, long time-base stationary energy storage applications in the residential, commercial & industrial and telecommunications sectors, and are scalable from a single battery installation through to grid-scale deployments. Redflow batteries are sold, installed and maintained by an international network of energy system integrators. Redflow’s smart, self-protecting batteries offer unique advantages including secure remote management, 100 per cent daily depth of discharge, tolerance of high ambient temperatures, a simple recycling path, no propensity for thermal runaway and sustained energy delivery throughout their operating life.

Richard Aird with batteries

Video: Redflow COO reports on the development of its Generation 3 ZBM2 battery

In the following video, Redflow Chief Operating Officer Richard Aird provides an update on the development of the company’s next-generation zinc-bromine flow battery, the ZBM2 Generation 3. 

“We’ve been accelerating this development over the past six months and we’re planning to launch the Generation 3 battery into the market towards the end of this year,” said Richard.

“The new developments include a major advancement in stack technology, tank architecture, improved cooling and a new electronics control system…As a result of these changes, we will deliver the same level of performance, a 10 kilowatt-hour, five kilowatt-peak battery, but the Generation 3 will allow us to utilise mass-manufacturing techniques for the very first time.”

Click on the video below to view Richard Aird’s video on the Redflow YouTube channel.

Remote home near Quindanning powered by Redflow battery

Redflow battery powers off-grid WA home, avoiding $100,000-plus in costs to connect to the power grid

A single Redflow battery is powering a “dream home” near Quindanning in south-west WA, saving its owners the six-figure cost of connecting it to the electricity grid.

In 2017, Geoff and Roz transported a derelict building made up of two hexagonal pods to their rural property in the south-west of Western Australia, aiming to create their dream retirement home.

With picturesque valley views towards the little town of Quindanning, about 170km from Perth, the 80-hectare property sits high on a ridge surrounded by native bushland. But the difficult-to-access property’s location meant the six-figure sum to connect to the power grid was cost-prohibitive. Going off-grid was the obvious solution.

Redflow partner TIEC, through its RBSS (Renewable Battery Storage Solutions) division, was commissioned to design a single-battery energy storage system that could meet the couple’s immediate needs and expand when their budget allowed.

Continue reading “Redflow battery powers off-grid WA home, avoiding $100,000-plus in costs to connect to the power grid”

Longevity Medical Centre saves $10,000 a year as Redflow batteries beat outages

Since installing Redflow batteries in early 2017, Melbourne’s Longevity Medical Centre has avoided approximately $10,000 a year in business disruption costs by having a guaranteed power supply.

Based in Doncaster East, Longevity Medical Centre has a 20 kilowatt-hour (kWh) Redflow energy storage system, with two 10 kWh ZCell batteries and two Victron MultiPlus inverters, harvesting energy from a 5.3 kilowatt-peak (kWp) solar array on the roof of its multi-storey premises. Since it was installed in the first half of 2017, the Redflow battery system has stored with more than nine megawatt-hours of energy.

Founding owner James Bishop said he estimated the Redflow batteries were saving the medical centre about $10,000 a year by avoiding power outages. “It doesn’t matter if the outage is for one minute or one hour, the disruption of getting everything working again would cost us about $2000 per occurrence,” he said.

“With four to five power outages a year, that’s $10,000 a year we’ve saved, plus the reduced energy cost of time-shifting stored solar energy. The bottom line is that business is hard enough without having power fluctuations. Every business buys insurance to offset the risk of disruption. Batteries give us insurance for our electricity supply which insurance policies fail to cover or cover poorly.”

Continue reading “Longevity Medical Centre saves $10,000 a year as Redflow batteries beat outages”

Redflow batteries demonstrate benefits of hibernation feature at Yallalong Station

Redflow’s WA partner TIEC Electrical has reported that Yallalong Station in the WA outback has put two of its four ZCell batteries into hibernation as energy demands dropped after the cattle mustering season.

TIEC’s project update on its website reports that now Yallalong has fewer workers at the station, it needs less power to run fridges, air-conditioning and other creature comforts in the remote Murchison location. 

TIEC’s Leith Elsegood said this was where the Redflow energy storage technology stepped up – whereas old chemistry batteries just did not+ make the grade. “By remotely logging into Yallalong’s Battery Management System (BMS) we can see that the system has put two of their four batteries into hibernation,” he said.

“Battery 1 has been Offline now for 10 days with a retained State of Charge (SoC) of 96.4 per cent and Battery 3 has been in Standby Power System mode (SPS) for 12 days with 100 per cent State of Charge – this battery is ready and waiting to automatically come online if more power is required for any reason. 

“We believe that this ability to retain all stored energy when not in use and have it available at the flick of a switch is one of the biggest advantages of zinc-bromine flow battery technology. Redflow zinc-bromine flow batteries can sit in standby for years at any charge capacity – from fully charged to fully flat – and then be up and running again in a few seconds, ready to deliver its stored energy.”

Read TIEC Electrical’s full project update about Yallalong Station by clicking here.

Redflow batteries at Swansea University in Britain

Swansea University deploys Redflow batteries for renewable energy Active Building demonstrator

Swansea University’s 120 kilowatt-hours (kWh) Redflow battery installation is now commissioned and operating, storing and supplying renewable energy on a microgrid that powers the Swansea University Active Building demonstrator. 

Swansea University’s Technology Transfer Fellow (Smart Systems) Tom Griffiths said the commissioning process was simple, despite a slight delay due to Covid-19. “We were very impressed with the set-up process for the Redflow batteries,” he said. “It was very simple, clear and logical and our local installation partner who had never worked with flow batteries before was easily able to support us in commissioning the system.” 

With the 12 x ZBM2 zinc-bromine flow battery energy storage system now operational, Redflow and Swansea University are working to develop additional areas for cooperation and collaboration beyond this initial microgrid project.

In March this year, Swansea University, a research-led British university, purchased Redflow’s unique ZBM2 zinc-bromine flow battery technology as the energy storage backbone for its Active Building demonstrator -– an award-winning classroom that generates, stores and releases solar energy at the point of use.

The microgrid is built around 120 kWh of Redflow batteries and is supplied with building-integrated, thin-film photovoltaic solar panels, as well as a solar wall that supplies the warm air to a heat-pump for space and water heating.  Since being built, the classroom has proven the Active Buildings concept by generating more energy than it has used over an annual cycle, and during high solar summer months, the system will return power to the local electricity grid.

Redflow’s small 10 kWh flow battery units are the only commercially available flow battery energy storage system that allowed accurate sizing for the 120 kWh system. Additionally, the Redflow battery operates “out of the box” with the Victron inverters and controllers that provide the power conversion for the Swansea University minigrid.

Tom Griffiths said Swansea had selected the Redflow technology because of its ability to deliver 100 per cent of the rated system energy every day, without degradation in capacity over a long – 10 year – life. “These characteristics were crucial considerations for us, and our application requires battery discharge duration of 4-8 hours depending on the time of year, making Redflow’s flow battery the ideal fit for our requirements in comparison to more conventional lead-acid or lithium alternatives.”

Continue reading “Swansea University deploys Redflow batteries for renewable energy Active Building demonstrator”
Delta Electrics General Manager Andrew Boller with a Redflow ZCell battery

New NT partner opens up Top End opportunities for Redflow

Redflow’s latest partner, Darwin-based Delta Electrics, believes that zinc-bromine flow batteries are ideally suited to deliver energy storage in the hot, demanding conditions of the Top End.

Founded in 1969, Delta Electrics is a leading supplier of power-related products and services to some of the largest organisations operating in the Northern Territory including Power Water, Territory Generation, the Australian Department of Defence, Telstra, McArthur River Mining/Xstrata and Energy Resources Australia. Delta’s client base spans an extensive range of industry sectors such as telecommunications, power utilities, agriculture, local councils and remote Aboriginal communities.

Delta Electrics General Manager Andrew Boller said the Northern Territory was increasingly seeking the benefits of new-generation batteries. “With years of experience with batteries, Delta Electrics understands the challenges and limitations of working with lithium-based battery chemistries within the NT: Unless they are installed in an air-conditioned environment. the operating temperatures of lithium batteries are always in the high 30s or more, which can significantly impact their life,” he said.

“Redflow zinc-bromine flow batteries are the ideal energy storage technology for the NT due to their ability to operate in harsh conditions and in warmer temperatures without cooling.

“We see Redflow as a prime partner going forward in the area of off-grid and battery-smoothing projects of less than one megawatt-hour (mWh) with the current technology easily available to support up to these levels. We have many opportunities in the 200-600 kilowatt-hour (kWh) range in the pipeline and several in the sub-100kWh range that are also ideally suited to Redflow.”

Delta Electrics undertook a detailed evaluation of Redflow batteries to identify that Redflow’s zinc-bromine flow battery technology offered many benefits for the NT market compared to lithium technology. These benefits include greater safety, operating at higher ambient temperatures and the ability to utilise 100 per cent of the battery’s storage capacity without impacting its operating life.

To highlight the strong potential for Redflow batteries, Delta Electrics has installed a two-ZBM2 battery 20kWh demonstration system that can showcase the benefits of zinc-bromine battery technology to its customers. This live system also enables Delta Electrics to develop hands-on-experience and an in-depth understanding of the operation, capabilities and commissioning of a Redflow energy storage solution that will equip it to promote the technology more effectively.

“Given our initial testing with Redflow, we feel confident in the technology and our ability to develop integrated solutions,” said Andrew Boller. “The Redflow Battery Management System (BMS) is well designed and allows us to easily integrate the batteries into systems to deliver controllable and scalable solutions,” he said. “Our ability to remotely support these batteries is a real benefit in the NT.”

Redflow CEO Tim Harris said Delta Electrics completes Redflow’s coverage of all Australian states and territories. “Andrew has a wealth of knowledge and strong established relationships in the NT,” he said. “Delta Electrics is a successful business with the strong expertise and capabilities that will allow Redflow to explore a number of current opportunities and build a strong presence within the NT.”

For full details of Redflow’s Australian partners, please visit

About Redflow

Redflow Limited, a publicly listed Australian company (ASX: RFX). Redflow produces small 10kWh zinc-bromine flow batteries that tolerate daily hard work in harsh conditions. Marketed as ZCell and ZBM2, Redflow batteries are designed for high cycle-rate, long time-base stationary energy storage applications in the residential, commercial & industrial and telecommunications sectors, and are scalable from a single battery installation through to grid-scale deployments. Redflow batteries are sold, installed and maintained by an international network of energy system integrators. Redflow’s smart, self-protecting batteries offer unique advantages including secure remote management, 100 per cent daily depth of discharge, tolerance of high ambient temperatures, a simple recycling path, no propensity for thermal runaway and sustained energy delivery throughout their operating life. 

Redflow Managing Director and CEO Tim Harris

Redflow announces capital raise

Redflow Limited has today announced an Entitlement Offer to raise as much as $22.9 million before offer costs with an immediate target of around $6.25 million.

When the Board last raised capital from shareholders in April 2019 (by way of a 1:2 pro-rata non-renounceable entitlement offer) it noted that Redflow was well-positioned to gain sales traction and customer acceptance of its innovative zinc-bromine flow batteries. 

Since that time, Redflow has:

  • grown sales over the nine months to 31 March 2020 by 166 per cent to $1.7m versus the prior corresponding period;
  • secured (after extensive trials) an initial order from Vodacom, which is part of one of the world’s largest telco groups, for nearly 30  telecommunication tower sites in South Africa (68 batteries);
  • developed a close relationship with Mobax, one of Southern Africa’s largest field services companies for the telecommunications industry;
  • been selected by New Zealand Rural Connectivity Group to provide energy storage for a number of off-grid sites with an initial order in December 2019 and repeat order in April 2020 (22 batteries in total) and have been advised that Redflow batteries are a reference technology in a closed tender to select an installation partner for all RCG’s remaining off-grid telecommunication towers;
  • achieved ISO9001 accreditation for our Thailand factory and demonstrated the benefits of a wholly-owned flexible manufacturing capability (capable of quickly scaling to 250 batteries a month);
  • proven the capacity, performance, structure and behaviour of our Thailand manufactured batteries after more than 600 cycles through an Australian government-sponsored independent testing program;
  • captured a growing number of orders through a refreshed partner ecosystem in Australia – notably in the agricultural and commercial sectors;
  • expanded into China via a Collaboration Agreement with ZbestPower Co – including the deployment of a 10 battery demonstration site in Qinghai Province; and
  • secured material improvements in future input costs through key supplier negotiations.
Continue reading “Redflow announces capital raise”

New AEMC rules may create opportunities for Redflow

New Australian Energy Market Commission (AEMC) rules mean that networks could soon replace lengthy and costly poles and wires for households and businesses in remote and disaster-prone areas with stand-alone solar and storage systems.

This generates opportunities for Redflow’s robust long-duration energy storage technology which is well suited to these applications as shown by customers from Yallalong station in outback WA to remote Ban Pha Dan village in northern Thailand.