Altea Green Power

Regulatory Filings • Oct 2, 2025

ALTEA GREEN POWER: BESS MARKET EVOLUTION AGP CONFIRMS OBJECTIVES AND GROWTH TRAJECTORY REAFFIRMATING 2028 TARGETS

Rivoli (Turin), October 2nd, 2025 - Altea Green Power (AGP.MI, hereinafter "AGP" or "the Company"), a company engaged in the development and the construction of projects and "green energy" plants, announces that, following the publication of the results of the first auction under the MACSE mechanism (incentive system for BESS plants), the auction result will not impact the prospective results envisaged in the 2024-2028 Business Plan. The Business Plan is therefore confirmed in all its aspects.

Anticipating the possibility of lower-than-expected allocation prices, the Company has implemented a series of preventive and forward-looking actions, structuring a Business Plan capable of ensuring economic sustainability despite uncertain and challenging scenarios.

Specifically, the Company's Business Plan was developed, conservatively, with reference values (€/MW) lower than those of the contracts already signed. Furthermore, development costs account for a limited 6- 7% of the overall project cost. In addition, over 30% of the total 3 GW of projects still under development and largely awaiting authorisation are located in Northern Italy and are therefore not subject to auction procedures but benefit from more profitable 'market' management by the end buyer.

The remaining projects in the advanced authorization phase will be offered to the market, aiming for a higher value than the early-stage projects contracted in previous years.

Giovanni Di Pascale, CEO of Altea Green Power, commented: "The conclusion of the first MACSE auction showed a result below the expectations raised by operators. We believe this is due, at least in part, to the significant reduction in battery costs and, consequently, project capex borne by plant developers, who found the allocation price to be a suitable balance for their investment return. However, it represents an important first sign of a revival in the BESS market, offering operators and investors a clearer picture of future operations and set prices. This concrete step helps restore investor confidence, many of whom had chosen to wait for the auction outcome before making further decisions".

Salvatore Guarino, General Manager of Altea Green Power, added: "We believe the dynamics of the first auction will not impact the 2024-2028 Business Plan, thanks to the solidity of our strategy, the diversification of our portfolio, and our ability to move quickly and anticipate major market developments".

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This press release is available on the Company website www.alteagreenpower.it and at

About Altea Green Power

Altea Green Power is a company listed on the Italian Stock Exchange - STAR segment -, founded in 2008 in Rivoli with the aim of supplying and managing renewable energy plants - photovoltaic, wind, and storage - that ensure maximum efficiency and operational reliability, all while fully respecting the environment. Altea Green Power is also an Independent Power Producer (IPP) focused exclusively on renewable sources and a supplier of EPC (Engineering, Procurement, and Construction) services, positioning itself as the primary point of reference

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for the construction and start-up of renewable plants. In a market where energy transition is central and medium to large-sized companies are increasingly taking the lead, Altea Green Power aims to be a key partner in the field of energy efficiency, helping its clients identify the best solutions to reduce energy consumption and mitigate the resulting impacts on global climate change.

For more information: Investor Relations Altea Green Power investorelation@alteagreenpower.com

CDR Communication

Silvia Di Rosa silvia.dirosa@cdr-communication.it Marika Martinciglio marika.martinciglio@cdr-communication.it

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Angelo Brunello angelo.brunello@cdr-communication.it Stefania Trevisol stefania.trevisol@cdr-communication.it