Allegro Energy attracts multi-million investment in water-based redox flow battery tech

September 9, 2024
LinkedIn
Twitter
Reddit
Facebook
Email
flow
Allegro is currently exploring the deployment of a 12-hour duration battery at Eraring in New South Wales. Image: Allegro Energy.

Allegro Energy, an Australian-based developer of water-based redox flow battery energy storage solutions, has attracted AU$17.5 million (US$11.67 million) in Series A funding from investors including Origin Energy, Melt Ventures and Impact Ventures.

Allegro Energy makes water-based redox flow batteries and supercapacitors, which contain no scarce materials and include fully recyclable components. Allegro’s flow batteries and supercapacitors integrate a water-based electrolyte, making energy storage less expensive and safer.

The company states that this “opens up the ability to address needs at a global scale”.

The lead investor in the Series A funding round was The Grantham Foundation, an organisation set up to support natural resource conservation projects across the globe. It was founded in 2007 by Jeremy and Hannelore Grantham.

This article requires Premium SubscriptionBasic (FREE) Subscription

Enjoy 12 months of exclusive analysis

Not ready to commit yet?
  • Regular insight and analysis of the industry’s biggest developments
  • In-depth interviews with the industry’s leading figures
  • Annual digital subscription to the PV Tech Power journal
  • Discounts on Solar Media’s portfolio of events, in-person and virtual

Or continue reading this article for free

Grantham was joined by another overseas investor, Chicago-headquartered Lightbank, known for its disruptive early-stage tech investments.

According to Dr. Thomas Nann, Allegro’s co-founder and CEO, the investors represent a mix of strategic and growth capital attracted by Allegro’s “unique advantages in the fast-growing long-duration energy storage (LDES) space.

“These funds will help us rapidly accelerate our manufacturing capacity. We are thrilled to be among the companies to have been given global recognition by The Grantham Foundation while also successfully drawing critical local capital and strategic support from some of the leading names in the renewable energy space,” said Dr. Nann.

Since its inception, Impact Ventures has supported Allegro’s advanced technology development, in line with their commitment to foster environmental solutions. Piers Grove, a general partner at Impact Ventures, believes Allegro’s technology has the potential to “significantly impact global long-duration energy storage”.

Origin Energy hedges bets with 12-hour duration system

Readers of Energy-Storage.news may be aware that Origin Energy, an Australian utility giant, secured a 5% stake in Allegro Energy in July 2023.

Under the terms of the partnership, the two parties will collaborate to develop a pilot project using Allegro’s redox flow batteries. The project will be located in Newcastle, north of Sydney, in New South Wales. It will first see a 800kWh battery deployed before deploying a 12-hour duration (5MW/60MWh) battery energy storage system (BESS).

Allegro said the Eraring site requires minimal preparation works prior to installation, which are expected to commence in August 2023, with the battery set to be commissioned in late 2024.

The project will be located south of Newcastle in Eraring, where Origin is currently constructing two BESS: one 240MW/1030MWh and one 460MW/1073MWh. It is situated near Australia’s largest coal-fired power plant.

The black coal power plant provides 2,880MW to the National Electricity Market (NEM). In early 2022, Origin said it would be retiring the coal-fired power plant in 2025, yet in May 2024, the New South Wales government controversially extended this by an additional two years to “guarantee a maximum of electricity supply”. The new expected closure date is scheduled for August 2027.

11 November 2025
San Diego, USA
The 2024 Summit included innovative new features including a ‘Crash Course in Battery Asset Management’, Ask-Me-Anything formats and debate-style sessions. You can expect to meet and network with all the key industry players again in 2025 from major US asset owners, operators, RTOs and ISOs, optimizers, software and analytics providers, technical consultancies, O&M technology providers and more.

Read Next

November 6, 2025
BlackRock-backed Akaysha Energy has secured AU$460 million (US$299 million) in construction financing for its 311MW/1,244MWh Elaine battery energy storage system (BESS) in Victoria, Australia.
November 6, 2025
Origin Energy has secured unconditional connection agreements with AEMO for its 300MW/650MWh grid-forming BESS at Mortlake Power Station in Victoria.
November 5, 2025
US utility Xcel Energy plans to build the Midwest’s largest battery energy system (BESS) facility at the Sherco Energy Hub in central Minnesota, US.
November 5, 2025
Australian energy giant AGL has submitted its 500MW/2,000MWh Tuckeroo Battery project for federal environmental approval.
Premium
November 5, 2025
ESN Premium speaks with Neha Sinha of Wärtsilä Energy Storage, about DC-coupled solar-battery hybrids in Australia.

Most Popular

Email Newsletter