ENGIE Surpasses 10 GW Global Energy Storage Capacity

ENGIE is expanding its energy storage capabilities as renewable energy becomes an increasingly important part of global electricity systems. Through battery energy storage systems (BESS) and pumped-storage hydropower, the company is strengthening grid flexibility by storing electricity when generation is high and releasing it when demand rises. These storage solutions support renewable energy integration while enhancing grid stability, resilience, and security of supply.

ENGIE Strengthens Battery Storage Presence Across Europe

ENGIE has established its first positions in Poland’s energy storage market and further strengthened its presence in Romania through four targeted investments.

Poland

Over the past two months, ENGIE has established a significant presence in Poland’s battery storage market, building a portfolio totaling 758 MW and 2,156 MWh.

The company acquired the ready-to-build Tursko Wielkie project, a 250 MW / 1,000 MWh battery storage facility in Osiek, Staszów County. ENGIE has also advanced development of an adjacent 70 MW / 280 MWh project, allowing the two sites to be integrated into a single 320 MW / 1,280 MWh facility.

The portfolio has been further expanded through the acquisition of a 438 MW / 876 MWh project in the Łódź region. These projects are scheduled for commissioning between 2028 and 2029 and benefit from direct connections to substations, helping optimize energy flows and reduce congestion on the regional power network.

Romania

In Romania, ENGIE has acquired a ready-to-build 54 MW / 216 MWh battery storage project in Călan, Hunedoara County, Transylvania. The project is expected to begin operations in 2029 and further supports ENGIE’s expansion in the Romanian energy storage market.

The company already has 85 MW / 170 MWh of storage capacity under construction in the country.

From Development to Delivery: ENGIE Expands Across Europe

Leveraging its global platform and local expertise, ENGIE continues to expand its energy storage development portfolio, progress construction projects and reach new operational milestones across key European markets.

Spain

In Spain, ENGIE is building on synergies with its 200 MW / 800 MWh Tarifa development currently under construction. The Group has also acquired a 66 MW / 264 MWh storage asset in the same city, which is expected to enter operation in 2029.

The acquisition further strengthens ENGIE’s portfolio of standalone and co-located energy storage systems.

Belgium

Construction has started on a new 74 MW / 296 MWh BESS at Coo in Belgium’s Liège province. The project will further strengthen the site’s role as a major energy hub by complementing its existing pumped-storage hydropower plant, solar installations and EV charging infrastructure.

Commissioning is scheduled for early 2028.

Portugal

In Portugal, ENGIE is constructing two 10 MW / 45 MWh battery storage systems, which will be co-located with the Rallo and Mourisca wind farms.

The projects form part of ENGIE’s strategy to hybridize renewable energy assets, with both systems expected to be commissioned in 2027.

United Kingdom

In Scotland, ENGIE has brought its first two BESS projects online. Located in Cathkin near East Kilbride and Broxburn west of Edinburgh, the facilities have a combined capacity of 100 MW / 200 MWh.

The Netherlands

ENGIE continues to expand its battery energy storage presence in the Netherlands, adding to its growing portfolio of large-scale storage projects across Europe.

ENGIE inaugurated BESS Maxima in Lelystad (35 MW / 100 MWh), its first and the largest battery storage system in operation in the country. Capable of supplying electricity for up to three hours during periods of peak demand, the asset complements a 32 MW solar farm and a 900 MW thermal power plant, turning the site into an integrated flexibility hub for the Dutch power system. ENGIE Energy Storage

With 10.7 GW of storage capacity in operation and under construction worldwide, including strong
positions in Europe (4.7 GW) and the United States (4.4 GW), ENGIE confirms its role as a leading
provider of flexibility solutions. This milestone reflects the Group’s ability to develop, build and
operate a diversified portfolio of storage assets, combining battery systems and pumped-storage
hydropower, to support increasingly renewable-based power systems. This accelerated
deployment contributes to the Group’s ambition to develop a diversified portfolio of renewable
and storage assets, reaching 95 GW by 2030.

Pedro Vasconcelos, ENGIE Executive Vice President in charge of Renewable & Flexible Power stated: “Surpassing 10 GW of storage capacity worldwide marks an important milestone
for ENGIE and reflects the scale and diversification of our flexibility platform. As renewable energy
expands, storage is confirming its role as a key source of flexibility, reliability and system value.
The progress achieved across Europe this summer demonstrates our ability to originate, develop
and deliver storage assets at scale while supporting the transition to a more resilient, competitive
and decarbonized energy system.”

ENGIE is a major player in the energy transition, whose purpose is to accelerate the transition towards a carbon-neutral economy. With more than 90,000 employees in 30 countries, the Group covers the entire energy value chain, from production to infrastructures and sales. ENGIE combines complementary activities: renewable electricity and green gas production, flexibility assets (energy storage, notably batteries), gas and electricity transmission and distribution networks, local energy infrastructures (heating and cooling networks) and the supply of energy to individuals, local authorities and businesses. Every year, ENGIE invests on average €12 billion per year to drive forward the energy transition and achieve its net-zero carbon goal by 2045.

Turnover in 2025: €71.9 billion. The Group is listed on the Paris and Brussels stock exchanges (ENGI) and is represented in the main financial indices (CAC 40, Euronext 100, FTSE Euro 100, MSCI Europe) and non-financial indices (DJSI World, Euronext Vigeo Eiris – Europe 120 / France 20, MSCI EMU ESG screened, MSCI EUROPE ESG Universal Select, Stoxx Europe 600 ESG-X).