November 5, 2025 | 12:00am
MANILA, Philippines — Ayala-led ACEN Corp. is powering Australia’s energy transition with the full commercial operation of the A$760-million Stubbo Solar in New South Wales (NSW).
With a peak capacity of 520 megawatts (MW), Stubbo Solar now stands among the largest solar projects ever built in Australia.
It also made history as the first solar generator supported by a 20-year long-term energy service agreement (LTESA) to achieve full energization.
The LTESA, secured during the NSW government’s first renewable energy and storage auction in 2021, provides ACEN subsidiary ACEN Australia with investment certainty by guaranteeing minimum revenue.
“What started as a single-site concept has become one of the most significant renewable energy investments in regional NSW, built through partnership, persistence and strategic adaptation,” ACEN Australia managing director David Pollington said.
With its solar generation output, Stubbo Solar is expected to power around 185,000 Australian households annually, contributing to the NSW government’s target of 50 percent renewable electricity by 2050.
“We’re proud to be part of this transition and look forward to working closely with the NSW government, our partners and stakeholders to deliver the next wave of clean, reliable and affordable energy for the state,” Pollington said.
Through ACEN Australia, the Ayala Group’s listed energy platform aims to become a clean energy powerhouse “Down Under.”
A top ACEN Australia official earlier said the group is gearing up to build over two gigawatts of projects in the next three years.
The company intends to start the construction of the 900-MW Valley of the Winds, the 600-MW Birriwa Solar and the 1,200-MW-hour Birriwa battery energy storage system.
“This positions ACEN to help achieve Australia’s energy transition objectives and reflects our long-term goals and commitments,” ACEN Australia executive chairman Jose Maria Zabaleta said.
Currently, ACEN has over 1,000 MW of operational renewable projects in Australia, with 200 MW under construction.
