Pacific Green, ZEN Energy pen 1.5GWh tolling deal for three BESS across Australia

LinkedIn
Twitter
Reddit
Facebook
Email

Pacific Green Technologies has inked a 10-year tolling agreement with Australian renewable energy developer ZEN Energy across three battery energy storage systems (BESS) totalling 1.5GWh of capacity.

Little detail has been provided on the agreement, including the specific projects encompassed in this deal; however, the locations are in Victoria, New South Wales, and Queensland.

According to Pacific Green’s CEO, Scott Poulter, the deal will help the organisation underwrite a “significant” part of its development portfolio across the three Australian states.

In a tolling agreement, an offtaker or route-to-market provider pays a guaranteed fixed price to the asset owner in exchange for the right to trade and participate in markets using some or all of the battery storage capacity, as detailed by market intelligence firm Modo Energy in this video explainer.

This article requires Premium SubscriptionBasic (FREE) Subscription

Try Premium for just $1

  • Full premium access for the first month at only $1
  • Converts to an annual rate after 30 days unless cancelled
  • Cancel anytime during the trial period

Premium Benefits

  • Expert industry analysis and interviews
  • Digital access to PV Tech Power journal
  • Exclusive event discounts

Or get the full Premium subscription right away

Or continue reading this article for free

It marks another BESS milestone in what has been a busy year so far for Pacific Green. For instance, the US-headquartered energy storage developer agreed to sell its 250MW/500MWh Limestone Coast North Energy Park BESS in South Australia to Intera Renewables in a deal worth AU$460 million (US$293 million).

Meanwhile, ZEN Energy has rapidly been expanding its presence within the Australian renewables and energy storage sector, particularly through its joint venture with Taiwan’s HD Renewable Energy called ZEBRE.

Since its launch, ZEBRE has acquired several development projects in Australia as it eyes creating a 1.4GW renewables and energy storage portfolio. 1GW of this figure will be comprised of energy storage.

The first project the JV secured was the 210MW Solar River solar-plus-storage site in South Australia, which features a 256MW co-located BESS.

AGL Energy and Engie Australia pen virtual storage agreement

In other news, the Australian entity of utility and power firm Engie has signed a firm 100% virtual energy storage agreement, which is a first of its kind for Engie Australia.

From 2027, Engie will purchase energy via a five-year, derivatives-only agreement, enabling the group to emulate the operational flexibility of a two-hour BESS. The deal will be backed by AGL’s BESS assets located in New South Wales.

The capacity that Engie will secure from AGL has not been disclosed at the time of reporting.

Although Engie says this deal is a “first of its kind” for the Australian entity, at the end of last year, Engie Australia penned a virtual battery offtake agreement with developer Neoen for a portion of the Victorian Big Battery, which was recently sold to HMC Capital.

This virtual battery offtake agreement covers 40MW of the 300MW/450MWh Victorian Big Battery capacity.

Our publisher, Solar Media, will host the Battery Asset Management Summit Australia 2025 on 26-27 August in Sydney. You can get 20% off your ticket using the code ESN20 at checkout.

8 September 2026
Barcelona, Spain
Battery & Energy Storage Tech Europe (BESTE) is Europe’s industrial scaling platform for stationary and industrial battery applications — not EVs. Taking place 8–9 September 2026 at Fira de Barcelona, BESTE brings together utilities, IPPs, energy-intensive industries, data centres, ports, rail, maritime, defence and aerospace OEMs — all deploying or integrating battery storage at scale. Over 100 companies already confirmed — including EDP Renewables, Acciona, Endesa, Naturgy, Neoen, Galp, Basquevolt and Veolia — alongside 40+ expert speakers and international institutional support from BEPA, BVES, LDES and Volta Foundation. Where Europe’s battery & ES ecosystem turns projects into reality.
15 September 2026
San Diego, USA
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.
15 September 2026
Berlin, Germany
Launching September 2026 in Berlin, Energy Storage Summit Germany is a new standalone event dedicated to Germany’s energy storage market. Bringing together investors, developers, policymakers, TSOs, manufacturers and optimisation specialists, the Summit explores the regulatory shifts, revenue models, financing strategies and technology innovations shaping large-scale deployment. With Germany targeting 80% renewables by 2030, it offers a focused platform to connect with the decision-makers driving the Energiewende and the future of utility-scale storage.

Read Next

July 24, 2026
ESS Tech Inc is deploying sodium-ion BESS in the US with Juniper Energy, while CATL deploys its sodium-ion technology in Eastern Europe with Solarpro.
July 24, 2026
In this news roundup, Grenergy, MaxSolar and Saft, and Amarenco have made significant advancements on BESS projects in Spain, Germany, and France.
Premium
July 23, 2026
ESN Premium speaks with Bryen Alperin and Sophie Brkovic of Foss & Company about the tax equity investor’s entrance into microgrids.
July 23, 2026
The Clean Energy Investor Group (CEIG) has published a report calling on the Australian government to prioritise consistent and timely implementation of the reformed Environment Protection and Biodiversity Conservation (EPBC) Act.
July 22, 2026
The Maine, US Department of Energy Resources (DOER) announced plans for the state’s first competitive energy storage solicitation up to 360MW.