Amarzena
A key energy storage project supporting Portugal’s energy transition
Akuo is developing Amarzena, a Battery Energy Storage System (BESS) with a capacity of 80 MWh, located in Gavião, co-located with the Margalha Solar Photovoltaic Plant in the Alentejo region, Portugal. Designed as a natural extension of the existing solar facility, the project reflects Akuo’s commitment to supporting the evolution of renewable energy systems towards greater flexibility and reliability.
Hybridization: integrating storage into an operational solar power plant
Amarzena is integrated in the Margalha Solar Photovoltaic Plant, which has concluded construction in December 2025 and has an installed capacity of 147 MWp.
The battery system will store renewable electricity produced during the day and make it available during periods of higher demand or when solar generation is lower. This ability to shift energy production over time contributes to a more efficient use of renewable resources and supports the stability of the power grid.
Strengthening grid resilience and renewable integration
As renewable energy capacity continues to grow, energy storage plays a crucial role in ensuring grid reliability. Amarzena will provide essential ancillary services to the electricity system, helping to mitigate fluctuations inherent in renewable energy production and to reduce the loss of clean energy during periods of excess generation.
By enabling greater integration of renewable energy, the project contributes to reducing reliance on fossil fuels, reinforcing Portugal’s energy independence and supporting the country’s decarbonisation objectives, including the national target of 85% renewable energy in total electricity production by 2030.
A project supported by European funding
Amarzena has secured financial support under the Recovery and Resilience Plan (PRR), within the NextGenerationEU framework, dedicated to investment in energy storage technologies.
This support contributes to the development of infrastructure that enhances the sustainability and resilience of Portugal’s electricity grid.
