Integrated by design

Energy storage value is created by how batteries, power conversion, controls and service work together. CESC links these disciplines through an integrated development and manufacturing model. Its manufacturing footprint covers 260,000 square metres, with annual capacity of 10 GWh. CESC reports 66% of its team is focused on R&D, supported by more than 150 patents and certifications and business in more than 25 countries and regions.

Scale matters when it improves execution. Connecting factory capability with system engineering supports tighter coordination across cell selection, pack design, thermal management, power conversion, testing and field feedback. It also allows CESC to build dedicated platforms for different operating environments instead of forcing one design into every application.

Intelligence from the cell to the cloud

CESC’s BMS and EMS form a coordinated architecture spanning the cell, local system and cloud. The BMS supports monitoring, active balancing and protection, while the EMS coordinates devices, schedules charging and discharging, and enables diagnostics. The platform supports more than 20 protocols, including Modbus and IEC 61850, with control response as fast as 400 ms. For asset owners, this intelligence can improve availability, support tariff optimisation and provide a clearer view of system health.

Products built around project constraints

At C&I level, Mercury 261 integrates 261 kWh in a 1.44 m² footprint and can scale to 5.22 MWh. Its hybrid variant is designed for microgrids, islands and smaller commercial sites, with 2:1 PV oversizing, an integrated static transfer switch and grid-generator coordination. For larger projects, Mercury 418 combines 418 kWh with an 800 V AC architecture that can reduce transformation equipment in compatible designs and scales to 8.36 MWh.

These parameters matter because they remove real project constraints: higher density saves space, fast transfer protects critical loads, modular cabinets simplify transport and installation, and high-voltage integration can reduce balance-of-plant requirements. Across Mercury products, liquid cooling, active balancing and layered protection support safe, consistent operation over a design life of 10,000 cycles.

Building for lifecycle value

Storage assets must adapt after commissioning. A system installed for solar self-consumption may later support dynamic tariffs, virtual power plants or grid services. CESC combines globally applicable platforms with localised cloud deployment, remote monitoring, over-the-air updates and technical support. This helps customers respond to changing operational and market requirements without rebuilding the system.

The next phase of storage will be judged by safety, availability, integration effort and total cost of ownership. CESC’s aim is to turn coordinated hardware, software and service into dependable energy infrastructure that is easier to deploy, clearer to operate and ready for future value streams.