Energy Storage Industries Asia Pacific (ESI) is an Australian company dedicated to advancing renewable energy storage. ESI manufactures, installs, maintains, and finances battery solutions. Their focus is on supporting Australia’s transition to a renewable energy future by providing reliable, environmentally responsible battery technologies. ESI operates as a vertically integrated business, encompassing the entire battery value chain for utility-scale, commercial, and industrial energy storage applications.
Headquartered in Paddington, Brisbane, Queensland, ESI works to deliver sustainable energy storage. The company’s efforts are part of a broader commitment to environmental stewardship, with a focus on responsible practices throughout the battery lifecycle. ESI is positioned to play a role in scaling energy storage solutions across the Asia-Pacific region.
Battery Technology
ESI specializes in iron flow battery technology. These batteries use iron, saltwater electrolyte, and water, offering a safe, environmentally beneficial, and recyclable alternative to lithium-ion batteries. Iron flow batteries provide 8 to 14 hours of energy storage and have an estimated lifecycle of 25 years. This long-duration capability makes them suitable for deep renewable energy integration, helping to stabilize grids by storing excess renewable generation from sources like solar and wind, and then discharging during peak demand or intermittency.
The technology is robust due to its non-flammable and non-toxic chemistry. ESI licenses its core technology from ESS Tech, Inc., a U.S.-based leader in iron flow battery technology. ESS supplies critical components, while ESI handles system assembly and manufacturing in Australia. The battery design emphasizes full recyclability, which aligns with ESI’s commitment to lifecycle sustainability. The modular structure of these systems allows for adaptable deployment across various applications.
Recent Projects
In September 2024, construction began on Australia’s first large-scale iron flow battery manufacturing facility in Maryborough, Queensland. This facility is expected to be operational by late 2025. It aims to produce 200MW / 1.6GWh of energy storage capacity annually by the end of 2026, with an ambition to expand to 400MW / 3.2GWh. This project supports regional and national renewable energy goals.
ESI also commissioned Australia’s first iron redox flow battery at the National Battery Testing Centre. This was a collaboration with ESS Tech, marking a milestone in domestic renewable energy storage. The Queensland Government invested AUD 25 million in September 2024 to accelerate battery manufacturing and deployment. ESI is conducting market studies in Indonesia, indicating plans for future expansion into Southeast Asia.
Investors
Energy Storage Industries Asia Pacific has secured financial backing from both public and private sources. The Queensland Government has invested AUD 25 million, supporting the acceleration of local battery manufacturing capacity and industry growth. Additionally, an undisclosed international private investor has contributed AUD 40 million.
Business Details
Location: Paddington, Queensland, Australia
Website: https://esiap.com.au/
LinkedIn: https://www.linkedin.com/company/81527417
