HOME / galp and powin launch 5mw battery storage system in portugal
Their simulations show that combining solar, wind and at least four hours of battery storage can meet Portuguese demand in 94 % of hours across an average year; add pumped hydro and that rises above 99 %. The remaining gap could be filled by green hydrogen or demand-response contracts that pay factories to pause production when clouds linger.
Additional hybrid capacity is being deployed, namely by Iberdrola, Greenvolt, Akuo, EDP and GALP, supported by Portugal's Recovery and Resilience Plan (PRR) programme under the “Flexibility and Storage” incentive call. Under this PRR scheme, 41 projects were approved, totalling around 500 MW of new storage capacity and € 99.75 million in grants.
In the period from January to August 2025, Portugal generated 33,107 GWh of electricity, with renewables accounting for 76.9% of total generation—the fourth-highest share in Europe, following Norway, Denmark, and Austria.
As storage proliferates, the probability of demand curtailment events drops sharply, easing concerns for remote workers who rely on uninterrupted connectivity. If everything on the books is built, Portugal will operate roughly 750 MW of batteries by early 2026, rising toward 2 GW by 2030.
For foreigners used to stable northern-European grids, the proliferation of Battery Energy Storage Systems (BESS) promises familiarity: fewer brownouts, fewer dramatic tariff swings, and a growing menu of smart-home contracts that reward households for charging electric cars when surplus solar floods the lines.
Additional hybrid capacity is being deployed, namely by Iberdrola, Greenvolt, Akuo, EDP and GALP, supported by Portugal's Recovery and Resilience Plan (PRR) programme under the “Flexibility and Storage” incentive call. Under this PRR scheme, 41 projects were approved, totalling around 500 MW of new storage capacity and € 99.75 million in grants.
If everything on the books is built, Portugal will operate roughly 750 MW of batteries by early 2026, rising toward 2 GW by 2030. The government plans to double its hydrogen-electrolyser ambition to 5.5 GW, creating another sink for surplus renewable power.
Due to its outstanding advantages in cost reduction and efficiency improvement, especially in the current context of winning bids at low prices, the 5MWh energy storage system is expected to become the preferred technology route for large energy storage power stations next year. What are the advantages of the 5MWh+ energy storage system?
The number of parallel battery clusters on the DC side of the 5MWh+ energy storage system has increased from the current 8 to 10 clusters to 12 clusters, and the DC side short-circuit current will increase compared to the previous generation system. Compared with AC, DC short-circuit current is more difficult to extinguish arc.
The UEI-BESS-2.5MW / 5MWh is a turnkey containerized energy storage solution engineered for grid-scale and commercial energy management. Housed in a prefabricated 40ft container, the system integrates 2.5MW power conversion, 5MWh of high-voltage LFP batteries, a step-up MV transformer, and full monitoring and safety infrastructure.
However, a small number of units, such as Sungrow, have adopted a single-side door opening design to further increase the energy density of the energy storage system. According to industry experts, most of the 5MWh+ battery cabins adopt centralized topology and liquid cooling and heat management. There are 12 battery clusters in the whole cabin.
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