A global shift toward renewable energy, electric mobility, and smarter grids is accelerating the need for reliable, flexible, and sustainable power infrastructures. Battery Energy Storage Systems (BESS) have become an essential component of modern electrical networks, enabling grid stability, energy optimization, and seamless integration of renewables.
With 7,215 MWh of usable capacity installed worldwide, we deliver trusted, efficient, and futureproof energy storage solutions tailored to the evolving demands of utilities, industries, and energy developers.
MWh of energy storage capacities installed across the world
The energy landscape is becoming increasingly complex. Battery Energy Storage Systems (BESS) play a critical role in ensuring grid reliability and optimizing energy flows. Our systems help to:
Designed with flexibility in mind, our Battery Energy Storage Systems solutions deliver high performance across a wide range of applications.
As an independent integrator, Omexom manages the full lifecycle of energy storage projects: —from engineering to long-term operation.
Our engineering teams deliver comprehensive expertise across all stages of Battery Energy Storage Systems Solutions system design. From feasibility studies to detailed grid‑stability analyses, we ensure that every solution is technically robust, economically optimized, and seamlessly integrated with hybrid generation sources. Our multidisciplinary approach covers electrical, mechanical, and high‑voltage design, supporting the creation of efficient and reliable energy storage assets.
We manage the full procurement and integration process to ensure that all components of the Battery Energy Storage Systems Solutions operate in perfect harmony. Our integrated approach guarantees compliance, interoperability, and optimized plant behavior.
Our Balance of Plant services provide all essential civil, electrical, and onsite integration works required to deliver a fully operational and compliant energy storage facility.
Our O&M services secure the long‑term performance and availability of Battery Energy Storage Systems Solutions worldwide. Leveraging global experience and hypervisor‑based supervision, we ensure safe, efficient, and uninterrupted operation throughout the system’s lifecycle.
Our holistic approach ensures the highest standards of quality, safety, and environmental responsibility, meeting the needs of todays and tomorrow’s energy networks.
Country: UK
Client: Zenobē Energy
Scope: Construction and delivery of a 300 MW/600 MWh battery energy storage system, including balanceofplant works to support gridscale renewable integration and enhanced network stability.
Dates: 2024-2025
Business Unit: Omexom in the UK
Country: Sweden
Client: Centrica
Scope: EPC delivery of two 20 MW/20 MWh battery storage systems, covering civil works, installation, commissioning, and integration, executed by Omexom C&S (design and BESS) and Omexom Gothenburg Renewable Energies (on-site construction).
Dates: 2024-2025
Business Unit: Omexom Conversion & Storage in France & Omexom in Sweden
Country: France
Client: TotalEnergies and SAFT
Scope: Turnkey delivery of a 25 MW/25 MWh battery system, including installation and grid connection to support frequency regulation and renewable integration.
Dates: 2022
Business Unit: Omexom Conversion & Storage in France of plant works to support gridscale renewable integration and enhanced network stability.
Omexom Conversion & Storage has successfully installed and commissioned five battery energy storage systems (BESS), totaling 14.8 MW/2h, for ZE Energy at its 77 MW solar park in…
Omexom in Scotland, UK is approaching the final stages of construction on the new 300MW/600MWh Battery Energy Storage System (BESS) at Kilmarnock South.
Acting for the climate is one of the key priorities of VINCI’s environmental ambition. At Omexom, some of our Business Units have already developed ways…
Omexom completed for Total Solar International, in collaboration with the company Saft, a turnkey contract with a 25MW/25MWh storage system: the most powerful electrical energy…
With 520 business units across the world, we have strong connections with local suppliers and contractors, each offering unique capabilities. As a global EPC contractor, our collaborative approach ensures you benefit from the most capable team for your BESS project.
Operating in 35 countries and working closely with local suppliers, we are committed to the highest standards of quality, health and safety, and environmental performance, delivering sustainable, efficient, and secure battery energy storage systems and energy solutions worldwide.
