Mainstream: Update on judicial reorganization proceedings in Chile

LYSAKER,Norway,Oct. 3,2023 --Reference is made to the previous announcement made by Aker Horizons ASA ("Aker Horizons") regarding the initiation by Mainstream Renewable Power ("Mainstream") of Judicial Reorganisation Proceedings for Huemul Energía SpA and Condor Energía SpA in Chile. Mainstream today announced that the project finance lenders have voted to support the company's restructuring plans pursuant to the proceedings.

While this is an important step to exit the reorganization proceedings,the plans remain subject to certain key conditions. It is expected that the Judicial Reorganisation Proceedings will conclude,with transaction consummation to occur,in the coming weeks.

For further information,please contact:

Marianne Stigset,Communications,Tel: +47 41 18 84 82,marianne.stigset@akerhorizons.com

Stian Andreassen,Investor Relations,Tel: +47 41 64 31 07,stian.andreassen@akerhorizons.com

About Aker Horizons

Aker Horizons develops green energy and green industry to accelerate the transition to Net Zero. The company is active in renewable energy,carbon capture and hydrogen and develops industrial-scale decarbonization projects. As part of the Aker group,Aker Horizons applies industrial,technological and capital markets expertise with a planet-positive purpose to drive decarbonization globally. Aker Horizons is listed on the Oslo Stock Exchange and headquartered in Fornebu,Norway. Across its portfolio,the company employs approximately 1,100 people in 18 countries on five continents. www.akerhorizons.com

About Mainstream Renewable Power

Mainstream Renewable Power is a leading pure-play renewable energy company,with wind and solar assets across global markets,including in Europe,Latin America,Africa,and Asia-Pacific. Mainstream is one of the most successful developers of gigawatt-scale renewables platforms,across onshore wind,offshore wind,and solar power generation. It has successfully delivered 6.5 GW of wind and solar generation assets to financial close-ready and has a global pipeline of 20.8 GW,with 1.4 GW in operation and under construction. www.mainstreamrp.com

This information is considered to be inside information pursuant to the EU Market Abuse Regulation and is subject to the disclosure requirements in Regulation EU 596/2014 and the Norwegian Securities Trading Act § 5-12. This stock exchange announcement was published by Marianne Stigset,Aker Horizons ASA,on 2 October 2023 at CEST 17:08.