Redflow Managing Director and CEO Tim Harris

Redflow presents today at TechOpps virtual investment conference

Redflow Limited Managing Director & CEO Tim Harris will present this afternoon at Market Eye’s TechOpps virtual conference. 

The conference, which started yesterday, includes executives from some of Australasia’s leading and emerging technology companies explain how they’re transforming the way people work and society operates during these unprecedented times. 

Keynote speakers for the event include Australia’s Minister for Communications, Cyber Safety and the Arts The Hon. Paul Fletcher MP and local digital economy pioneer Gabby Leibovich, co-founder of Tim Harris is presenting at 2:20pm AEDT today (Thursday, October 15, 2020).

Attendance at this virtual conference is free. To register for the event and view the full program please visit:

John Lindsay

Former telco exec praises the benefits of Redflow’s BMS for telecom companies

Former senior telecommunication executive John Lindsay, who is a Redflow director, has recorded a YouTube video to highlight the benefits of the Redflow BMS (Battery Management System) for telecommunication companies.

Telcos, including Optus in Australia, Vodafone and RCG in New Zealand and Mobax in South Africa, have deployed Redflow’s zinc-bromine flow batteries to provide energy storage for mobile phone towers in their respective countries.

John Lindsay, who was previously CTO of major telecommunication companies including Internode and iiNet Limited, said he was “quite impressed” by the way Redflow’s BMS solved problems that he used to experience managing batteries for those ISPs.

“In a former life … I was responsible for batteries at remote telecommunication facilities and managing them was quite difficult,” he said. 

“Unlike traditional electrochemical batteries, the Redflow Zinc-Bromine Module, or ZBM, has an on-board manager that decides whether each ZBM can be charged, discharged, put to sleep or woken up. Each group of ZBMs can have a Battery Management System, or BMS, which coordinates the operations of the ZBMs and communicates with the battery charger and load with an interface called CANBUS.

“The Redflow BMS connects to a Redflow Cloud service which securely monitors the status of every ZBM and securely allows the on-board software, or firmware, to be updated, just like your computer gets updated, so you ZBM will probably be smarter in the future.

“As a former telco and ISP Chief Technology Officer, the Redflow BMS really excites me because the power systems used for mobile base station and wireless ISP sites are usually very simple – a battery charger – and the equipment is often connected directly to the batteries. Sometimes, the first time you find a lithium or lead-acid battery cell has failed is when the equipment at the site stops working.”

John Lindsay said the Redflow BMS provided real-time insight into the performance of Redflow batteries, managing them like a fleet to optimise the system’s energy storage capacity and efficiency. “The Redflow BMS turns a set of ZBMs into an energy storage appliance,” he said.

Click below to view John Lindsay’s under-the-hood YouTube video introduction to the Redflow BMS. 

James Emmett’s house at Tamborine Mountain, south of Brisbane

Brisbane doctor builds off-grid dream house powered by solar PV and Redflow batteries

When Brisbane doctor James Emmett decided to build his dream house on Tamborine Mountain south of Brisbane, he chose Redflow batteries to make it as environmentally sustainable as possible.

In 2017, before even starting construction of the house on the 3.2 hectare former farming property, James installed two 10 kilowatt-hour (kWh) ZCell batteries to deliver power needed by builders. The system also included a Victron inverter-charger, a Fronius inverter, and 13 kWp of ground-mounted solar panels. An ultracapacitor was used to meet the power surges demanded by the builders’ larger drop saws.

When the house construction was completed a further two ZCell batteries were added to the system. Now, with the house built, he is reaping the benefits of off-grid living, with plenty of free energy to power his home as well as charge his electric car and electric zero turn mower.

James Emmett with his Hyundai Kona electric car and ground-mounted solar panels
James Emmett with his Hyundai Kona electric car and ground-mounted solar panels
Continue reading “Brisbane doctor builds off-grid dream house powered by solar PV and Redflow batteries”

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”