Redflow Managing Director and CEO Tim Harris with ZBM2 batteries

Redflow receives subsequent order of flow batteries for New Zealand’s RCG

Redflow Limited (ASX: RFX) has received a subsequent order for its ZBM2 zinc-bromine flow batteries for deployment by New Zealand’s Rural Connectivity Group (RCG).

Redflow, which supplied an initial eight batteries for use by RCG in November 2019, has received a follow on order for an additional 10 batteries for installation at two new off-grid RCG telecommunications transmission towers in the North Island of New Zealand. Local RCG partner Switchboard Services has placed the order and will undertake ZBM2 installation works.

This repeat order follows the successful installation and commissioning of Redflow’s ZBM2 batteries at two RCG towers late last year.

Redflow Managing Director and CEO Tim Harris said this order for ZBM2 batteries at further RCG sites demonstrated the benefits that Redflow’s zinc-bromine flow battery technology delivered to telecommunications companies. “These benefits include long-life performance, heat-tolerance and theft-resistance,” he said.

“This builds on the interest and demand we have seen from Vodacom and Moropa in South Africa and Optus in Australia last year. We are extremely pleased to continue to solidify our product positioning as an energy storage technology of choice in the telecommunications market for off-grid and weak grid environments.”

About the RCG programme

The RCG programme is a venture between the New Zealand government and the three mobile network operators in New Zealand: Vodafone, Spark and 2degrees, to provide or enhance 4G mobile and wireless broadband coverage in New Zealand for off-grid and on-grid environments with a focus on rural areas and areas impacted by black-spots.  The Redflow ZBM2 zinc-bromine flow battery has been selected for use on off-grid sites and is particularly well suited to the requirements of this application. The batteries provide long duration run times for sites powered almost exclusively by PV solar panels, with a backup generator used in winter conditions.

The batteries provide 100% cycling capability each day to maximise the utilisation of the solar generation and that daily cycling capacity does not degrade with utilisation or at elevated temperatures up to 50ºC. The 10-year life of the Redflow ZBM2 with minimal maintenance makes for a cost-effective total-cost-of-ownership over the long haul.

About Redflow www.redflow.com

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.

Vodafone uses Redflow batteries to store energy for remote telecom tower site in New Zealand

Zinc-bromine flow batteries from Redflow have stored and supplied more than 50 MWh (megawatt-hours) of renewable energy for a Vodafone telecommunications tower in New Zealand during the past three years.

Vodafone NZ’s Kauaeranga Valley tower site is located east of Thames by the Coromandel Forest Park in a remote part of New Zealand’s North Island, Sites such as the Kauaeranga Valley are so remote that it is unfeasible to lay or connect power cables. Alternative power sources, such as diesel generators, come with their own set of challenges including a second generator for redundancy, high maintenance costs and expensive and difficult diesel deliveries.

Vodafone New Zealand has met the challenge of bringing broadband connectivity to the remote site, where no grid power is available, by deploying a best-in-class green energy cell site, powered by Vertiv’s Hybrid Energy Storage System (HESS) with energy stored by Redflow batteries. The site, which contains five Redflow ZBM2 zinc-bromine flow batteries, has improved mobile phone coverage and high-speed wireless broadband for thousands of locals and visitors in the region.

Rural Connectivity Group chooses Redflow for off-grid energy storage in New Zealand

The New Zealand Rural Connectivity Group (RCG) has chosen Redflow zinc-bromine flow batteries to store energy in off-grid telecommunication sites in remote rural locations. Commercial negotiations to establish a direct relationship between RCG and Redflow to purchase batteries are now underway.

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