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.
Yallalong Station, a 348,000-hectare cattle property 650km north of Perth, has deployed a Redflow battery-based energy storage system to boost its energy independence and save thousands a year in diesel costs.
The cattle station, in the dry Murchison region northeast of Geraldton, can swelter for months in summer temperatures higher than 40 degrees Celsius - sometimes as high as 48 degrees Celsius.
Yallalong Station owner Lyndon Brown said a 24-hour power supply was essential to attract staff to work at this remote location. “If you want people to live out there in those isolated places, you do need 24-hour power to run all your fridges, air-conditioning and comforts of life that they expect,” he said.
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.
The RCG was established by the New Zealand Government in 2017 as an independent entity to build, operate and maintain a new open access network. The RCG will build over 400 new cell sites in rural locations to extend mobile and wireless broadband coverage to more than 34,000 rural homes and businesses, provide mobile coverage to a further 1000 kilometres of state highways and provide connectivity to more than 100 top New Zealand tourist destinations by December 2022. The new cell sites will be a combination of both off-grid and on-grid locations.
This critical infrastructure project is funded by the government’s Telecommunications Development Levy and an extra $75M from the three mobile network operators, Spark, Vodafone and 2Degrees.
RCG’s off-grid cell sites will meet their energy needs through a combination of PV solar panels, Redflow batteries and a backup generator. It is anticipated that the first site, which will use eight Redflow batteries, will be installed by the end of December 2019.
West Australians are increasingly seeking the benefits of new-generation batteries as the State’s generous solar feed-in tariffs start to disappear, reports Redflow’s new WA partner Leith Elsegood.
WA homes that installed solar systems a decade ago are already losing the 40-cents per kilowatt-hour (KWh) feed-in tariff, introduced by the State Government to encourage the installation of solar panels. The 10-year feed-in tariff will end in 2021.
Since 1989, Mr Elsegood’s company, TIEC Services, has installed solar photovoltaic (PV) systems and energy storage systems throughout WA, at remote communities and, more recently, in high-end homes in the Perth metropolitan suburbs. TIEC Services recently signed up as installer of new-generation Redflow energy storage batteries for Perth and WA. Already, the company has won large, residential solar and energy storage contracts with Redflow’s ZBM2 batteries.
“The Redflow battery is ideal for WA conditions, handling the dry heat and the great distances in remote regions,” Mr Elsegood said.