C08936-2025

SECURITIES AND EXCHANGE COMMISSIONSEC FORM 17-C

CURRENT REPORT UNDER SECTION 17
OF THE SECURITIES REGULATION CODE
AND SRC RULE 17.2(c) THEREUNDER

1. Date of Report (Date of earliest event reported)
Dec 29, 2025
2. SEC Identification Number
39274
3. BIR Tax Identification No.
000-506-020-000
4. Exact name of issuer as specified in its charter
ACEN CORPORATION
5. Province, country or other jurisdiction of incorporation
Makati City, Philippines
6. Industry Classification Code(SEC Use Only)
7. Address of principal office
35th Floor, Ayala Triangle Gardens Tower 2, Paseo de Roxas corner Makati Avenue, Makati City Postal Code 1226
8. Issuer's telephone number, including area code
(632) 7730 6300
9. Former name or former address, if changed since last report
N/A
10. Securities registered pursuant to Sections 8 and 12 of the SRC or Sections 4 and 8 of the RSA
Title of Each Class Number of Shares of Common Stock Outstanding and Amount of Debt Outstanding
Common Shares 39,951,435,064
Series A Preferred Shares 8,341,500
Series B Preferred Shares 16,658,500
11. Indicate the item numbers reported herein
Other Matters

The Exchange does not warrant and holds no responsibility for the veracity of the facts and representations contained in all corporate disclosures, including financial reports. All data contained herein are prepared and submitted by the disclosing party to the Exchange, and are disseminated solely for purposes of information. Any questions on the data contained herein should be addressed directly to the Corporate Information Officer of the disclosing party.

ACEN CORPORATIONACEN

PSE Disclosure Form 4-31 - Press Release References: SRC Rule 17 (SEC Form 17-C)
Section 4.4 of the Revised Disclosure Rules

Subject of the Disclosure

ACEN completes transition to 100% Renewable Energy
Background/Description of the Disclosure

December 29, 2025, Manila, Philippines — ACEN has reached a defining milestone in its transformation journey, having achieved 100% renewable energy generation across its portfolio earlier this year.

The milestone underscores a strategic shift that began nearly a decade ago. In 2016, ACEN reached 1,000 megawatts of installed capacity, with the portfolio largely anchored on coal and renewable energy accounting for only around 2%. At the time, fossil fuels dominated regional power systems, and large-scale renewables were still emerging.

Recognizing the growing urgency of climate change and the long-term risks associated with carbon-intensive assets, ACEN made a deliberate pivot toward renewable energy. The company reshaped its strategy, redirected capital, and built the capabilities needed to scale clean energy across multiple markets - while taking measured steps to reduce and ultimately exit coal.

Today, ACEN’s renewable energy portfolio has grown to over 7 gigawatts of attributable capacity, spanning projects that are operational, under construction, or supported by signed agreements. ACEN, the Ayala group’s listed energy company, is now among the fastest-growing renewable energy platforms in the Asia Pacific, with the Philippines as its core and largest market.

Beyond the Philippines, ACEN has established a diversified regional presence, with a wholly-owned platform in Australia, alongside operations in Vietnam, India, and Lao PDR, and strategic investments in Indonesia and other markets.

“This milestone reflects our long-term strategy to align ACEN with the future of the energy system, while supporting decarbonization in a commercially disciplined way,” said Eric Francia, President and CEO of ACEN.

As a developer, builder, and operator, ACEN leverages its agility and collaborative approach to help accelerate the energy transition across its markets. The company now operates on 100% renewable energy generation and is targeting Net Zero greenhouse gas emissions by 2050, consistent with global climate objectives.

In 2025, ACEN completed and advanced a diversified set of renewable energy projects across its portfolio:

Solar: 4,634 MW
Wind: 1,957 MW
Geothermal: 115 MW
Battery Energy Storage: 304 MW

These projects contribute to cleaner and more reliable power systems, while supporting economic activity and local development across ACEN’s host communities.

Reaching 100% renewable energy marks an important foundation for ACEN’s next phase of growth. As the company looks ahead, its focus extends beyond capacity expansion, toward enabling a just, orderly, and inclusive energy transition that delivers long-term value for stakeholders.

Beyond targets, ACEN continues to transition with purpose. Demonstrating that ambition, when matched with execution, can deliver real impact.

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Other Relevant Information

About ACEN

ACEN (PSE:ACEN), the Ayala group’s listed energy platform, is one of the fastest-growing renewable energy platforms in Asia Pacific, with the Philippines as its core and largest market. It also has a significant presence in Australia, Vietnam, India, and Lao PDR, along with strategic investments in Indonesia and other markets. The company currently has ~7 GW of attributable renewable energy capacity spanning operational, under-construction, and committed projects.

As a developer, builder, and operator, ACEN leverages its agility and collaborative approach to accelerate the energy transition. The company has 100% renewable energy generation and aims to reach Net Zero greenhouse gas emissions by 2050—turning bold ambitions into real impact for businesses, communities, and indigenous groups.
www.acenrenewables.com

For inquiries and more information, please contact:

Irene Maranan
Head – Corporate Communications and Sustainability
Email: [email protected]

DISCLAIMER: This disclosure may contain forward-looking statements that are subject to risk factors and opportunities that may affect ACEN’s plans to complete the transaction/s subject of this disclosure. Each forward-looking statement is made only as of the date of this disclosure. Outcomes of the subject transaction may differ materially from those expressed in the forward-looking statements included in this disclosure.
Filed on behalf by:
Name Candy Dacanay-Datuon
Designation Assistant Vice President