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

August 6, 2025
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

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

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.

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.
24 February 2026
InterContinental London - The O2, London, UK
This isn’t just another summit – it’s our biggest and most exhilarating Summit yet! Picture this: immersive workshop spaces where ideas come to life, dedicated industry working groups igniting innovation, live podcasts sparking lively discussions, hard-hitting keynotes that will leave you inspired, and an abundance of networking opportunities that will take your connections to new heights!

Read Next

October 28, 2025
Eos announced its move to Pennsylvania, US, as well as agreements for energy storage projects with Talen Energy and MN8 Energy.
Premium
October 28, 2025
We gather the industry reaction to the MACSE auction in Italy, which saw TSO Terna procure 10GWh of long-term capacity at what most agreed are extremely low prices.
October 28, 2025
AEMO has reported a record 56.6GW of new generation and storage capacity in the National Electricity Market (NEM) development pipeline.
October 28, 2025
Finnish marine and energy technology group Wärtsilä will deliver what it claims is Australia’s largest DC-coupled hybrid battery energy storage system (BESS) for the National Electricity Market (NEM).
Premium
October 27, 2025
RedEarth’s Marc Sheldon admits that the company decided to push back the launch of Australia’s first locally manufactured V2G charger.

Most Popular

Email Newsletter