ENGIE Reaches 10.7 GW of Global Energy Storage Capacity Following 1.1 GW Summer Expansion Across European Battery Markets

ENGIE Reaches 10.7 GW of Global Energy Storage Capacity Following 1.1 GW Summer Expansion Across European Battery Markets

(IN BRIEF) ENGIE has surpassed 10 GW of global energy storage capacity, reaching 10.7 GW of battery storage and pumped-storage hydropower assets in operation or under construction after adding approximately 1.1 GW / 3.3 GWh of European BESS capacity during July and August 2026. The Group has established a major new position in Poland with a 758 MW / 2,156 MWh portfolio, expanded its Romanian pipeline with a 54 MW / 216 MWh project in Călan, added a 66 MW / 264 MWh asset in Tarifa, Spain, started construction of a 74 MW / 296 MWh BESS in Belgium and two 10 MW / 45 MWh systems in Portugal, and commissioned its first two UK batteries in Scotland with a combined 100 MW / 200 MWh capacity. ENGIE also recently inaugurated the 35 MW / 100 MWh BESS Maxima in Lelystad, the Netherlands. Europe now accounts for about 4.7 GW of ENGIE’s global storage portfolio and the United States for 4.4 GW, reinforcing the Group’s position in grid flexibility as renewable generation expands and supporting its target of reaching 95 GW of installed renewable and storage capacity by 2030.

(PRESS RELEASE) LA DÈFENSE, 4-Sep-2026 — /EuropaWire/ — ENGIE has surpassed 10 GW of storage capacity worldwide, reaching 10.7 GW of battery energy storage and pumped-storage hydropower assets in operation or under construction, following a significant expansion of its European battery portfolio during July and August 2026.

Over the two-month period, ENGIE added approximately 1.1 GW / 3.3 GWh of battery energy storage system (BESS) capacity across seven European countries through acquisitions, construction starts and newly commissioned projects.

The expansion supports ENGIE’s wider strategy to increase the flexibility of electricity systems as renewable generation grows and contributes to the Group’s ambition to reach 95 GW of installed renewable and storage capacity by 2030.

Battery storage and pumped-storage hydropower allow electricity to be stored when generation is abundant and released when demand rises, helping integrate intermittent renewable energy, improve grid stability and resilience, and strengthen security of supply.

ENGIE establishes major battery storage position in Poland

ENGIE has made its first significant entry into the Polish energy storage market, assembling a portfolio of 758 MW / 2,156 MWh during the summer.

The Group acquired the ready-to-build Tursko Wielkie battery storage project in Osiek, Staszów County, with a capacity of 250 MW / 1,000 MWh.

ENGIE subsequently advanced an adjacent 70 MW / 280 MWh development, allowing the two sites to be combined into a single 320 MW / 1,280 MWh storage facility.

Its Polish pipeline was further expanded through the acquisition of another 438 MW / 876 MWh battery project in the Łódź region.

The projects are scheduled to enter operation between 2028 and 2029 and benefit from direct connections to substations, which ENGIE said should improve energy flows and help ease congestion on regional electricity networks.

Romanian portfolio expands with ready-to-build Transylvania project

In Romania, ENGIE has acquired a ready-to-build 54 MW / 216 MWh battery project in Călan, Hunedoara County, Transylvania.

The project is expected to begin operating in 2029.

It adds to ENGIE’s existing Romanian battery programme, where 85 MW / 170 MWh of storage capacity is already under construction.

The investment further strengthens the Group’s presence in Central and Eastern Europe as electricity markets across the region increase investment in grid flexibility and renewable energy integration.

Additional BESS projects advance across Spain, Belgium and Portugal

ENGIE is also expanding its storage portfolio across several other European markets through new acquisitions and construction programmes.

In Spain, the Group has acquired a 66 MW / 264 MWh battery asset in Tarifa, where it is already developing another storage project with a capacity of 200 MW / 800 MWh.

The newly acquired asset is expected to enter operation in 2029 and will expand ENGIE’s mix of stand-alone and co-located energy storage systems.

In Belgium, construction has begun on a 74 MW / 296 MWh BESS at Coo in the province of Liège.

The battery facility will complement the site’s existing pumped-storage hydropower plant, solar installations and electric vehicle charging infrastructure, further developing Coo as a multi-technology energy hub.

Commissioning is planned for early 2028.

In Portugal, ENGIE is constructing two battery systems of 10 MW / 45 MWh each alongside the Rallo and Mourisca wind farms.

The projects form part of the Group’s strategy to hybridise renewable energy assets by combining generation and storage at the same locations.

Both Portuguese battery systems are expected to enter service in 2027.

ENGIE brings first UK battery systems online in Scotland

ENGIE has also commissioned its first two battery energy storage systems in the United Kingdom.

Located at Cathkin, near East Kilbride, and Broxburn, west of Edinburgh, the two Scottish projects provide a combined capacity of 100 MW / 200 MWh.

The installations establish ENGIE’s operational battery presence in the UK and add further flexibility resources to a power system with rapidly growing renewable generation.

BESS Maxima creates integrated flexibility hub in the Netherlands

In the Netherlands, ENGIE inaugurated BESS Maxima in Lelystad on 30 June 2026.

With a capacity of 35 MW / 100 MWh, the facility is ENGIE’s first operational battery storage system in the country and its largest there to date.

The battery can supply electricity for up to three hours during periods of peak demand.

BESS Maxima operates alongside a 32 MW solar farm and a 900 MW thermal power plant, creating what ENGIE describes as an integrated flexibility hub serving the Dutch electricity system.

Global storage portfolio reaches 10.7 GW

Following the latest developments, ENGIE now has 10.7 GW of storage capacity in operation and under construction worldwide, combining battery energy storage systems with pumped-storage hydropower.

Europe accounts for approximately 4.7 GW of the portfolio, while the United States represents around 4.4 GW.

ENGIE said this diversified storage platform strengthens its ability to provide flexibility services as electricity systems become increasingly dependent on variable renewable generation.

The company intends to continue developing, constructing and operating large-scale storage assets as part of its broader renewable energy strategy.

Pedro Vasconcelos, ENGIE Executive Vice President in charge of Renewable & Flexible Power, said exceeding 10 GW of storage capacity represents an important milestone for the Group and demonstrates the scale and diversification of its flexibility platform.

He said storage is becoming increasingly important for reliability, system flexibility and value creation as renewable energy deployment accelerates.

Vasconcelos added that ENGIE’s progress across Europe during the summer demonstrates its ability to originate, develop and deliver storage projects at scale while supporting a more resilient, competitive and lower-carbon energy system.

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SOURCE: ENGIE