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Redflow signs landmark energy storage deal with Anaergia

Australian energy storage company Redflow Ltd has announced that is signed an agreement to supply a 2 MWh energy storage system comprising of 192 zinc-bromine flow batteries to Canada-headed Anaergia, Inc. (Anaergia), a global technology leader in recovering value from waste. The batteries will support two MWh of energy and reduce peak energy use at Rialto Bioenergy Facility, LLC (RBF), an Anaergia company, located in San Bernardino County, California (CA), as part of the facility’s microgrid. 

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Redflow Ltd will supply a 2 MWh zinc-bromine flow battery energy storage system to Anaergia Inc., to reduce peak energy use at Rialto Bioenergy Facility, LLC (RBF) microgrid project in California (photo courtesy Redflow).

The microgrid project was funded in part by a grant from the California Energy Commission (CEC) and consists of batteries, a biogas conditioning system to support a 2.0MW biogas-fueled cogeneration unit, and a microgrid control system at RBF.

Anaergia selected Redflow’s zinc-bromine flow batteries because they are uniquely suited to meet the demands of the Rialto site, said Yaniv Scherson, Chief Operating Officer, Anaergia.

RBF will be North America’s largest landfill diverted organic waste digester facility once fully operational. The facility will convert 700 tonnes per day of organic waste and 300 tonnes per day of biosolids into renewable natural gas (RNG) and Class A fertilizer.

The facility is located in Rialto, 80 km (50 miles) east of Los Angeles, and services the organic waste recycling needs of Los Angeles and the Southern California region.

Single largest sale for Redflow

Redflow will provide Anaergia with a 2 MWh system comprising of 192 10 kWh zinc-bromine flow batteries to enable the facility to store and supply up to 2 MWh of energy daily from 16.00 – 21.00, during peak tariff period.

This agreement represents Redflow’s largest single sale and deployment of batteries globally. Under the contract, Redflow will receive more than US$1.2 million (excluding taxes) for the system.

Redflow will also provide the Facility with 12 newly designed “Energy Pods” – each containing 16 Redflow batteries and the power electronics needed to link with external inverters – to meet the facility’s requirements.

According to Redflow, its ZBM2 battery is a scalable 10 kWh zinc-bromine flow battery that can deliver 100 percent depth of discharge each day – without causing any damage to the battery. The temperature-tolerant zinc-bromine flow battery is unaffected by ambient temperatures as warm as 50°C (122°F). It contains an inherently non-flammable electrolyte solution and is made from easily recycled or reused components. At its end of life, the battery’s zinc bromide electrolyte solution can be purified and used for new batteries (image courtesy Redfow).

While each battery has a rated energy storage capacity of 10 kWh, in practice, each battery stores about 10.5 kWh of energy, meaning Redflow is comfortable rating this system at 2 MWh for Anaergia.

Besides training Anaergia’s electrical contractors to perform the installation, Redflow will provide qualified technicians to support commissioning and Site Acceptance Testing and any required maintenance. Redflow will also provide Anaergia with access to Redflow’s Battery Management System to allow continuous monitoring and reporting.

Opens a major market

The Californian Senate Bill (SB) 100 commits the State to decarbonize its electric grid by 2045. A recent study commissioned by the California Energy Storage Alliance (CESA) found California will need to deploy between 45 GW and 55 GW of long-duration energy storage to eliminate greenhouse gas (GHG) emissions from its electricity sector by 2045.

This represents more than 150 times California’s currently operating energy storage built-in since 2010.

Anaergia’s Rialto Bioenergy Facility provides the ideal use case for Redflow zinc-bromine flow batteries. Our batteries thrive on heat and hard work – exactly what Anaergia requires from them. This project also enables Redflow to establish a presence in California, where we can offer commercially-proven zinc-bromine flow battery solutions to the broader Californian and US energy market. These markets are expected to accelerate the transition to renewable energy under the new administration of President Biden. We are very excited about the potential for Redflow in California and the broader US market, said Tim Harris, Managing Director, and CEO of Redflow.

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