Turn-Key to stable operation
EPC & commissioning for utility-scale battery energy storage systems
In the execution phase, planning becomes reality. INTILION delivers structured EPC implementation of your battery energy storage project – from delivery and installation of system components to construction coordination and successful commissioning. Execution is aligned with the agreed scope of work (SOW) and includes both the technical integration of the system and the coordination of all project stakeholders and partners to ensure a smooth transition into stable grid operation.
A key phase for project success
The construction and commissioning phase determines whether a battery energy storage project is implemented in a technically reliable, on-time, and grid-compliant manner.
In this phase, all system components are installed, integrated, and prepared for grid operation. At the same time, protection tests, system tests, and communication checks are carried out to ensure compliance with the technical requirements of the grid operator.
A structured project execution reduces risks in later project phases and lays the foundation for stable and reliable system operation.
Our services in the execution phase
INTILION coordinates the delivery, installation, and integration of system components and supports project developers in the structured execution of battery energy storage systems. Our services include construction coordination, installation of electrical infrastructure, as well as system integration and commissioning through to preparation for stable grid operation.

Civil works & balance of plant
Civil infrastructure forms the foundation for the installation of the battery energy storage system and the integration of electrical components.
Key aspects
- Site setup and coordination in line with the scope of work (SOW)
- Preparation of site areas and foundations
- Cable routing and protection measures
As part of balance of plant (BoP) works, the infrastructure required for the operation of the battery energy storage system is established. This includes site setup, ground preparation, foundation works, as well as cable routing and protection measures.
All activities are aligned with the project scope and the technical requirements of the system.

Project coordination & delivery
Structured project coordination ensures that delivery, installation, and integration of system components are executed efficiently.
Key aspects
- Coordination of system delivery
- Centralized project management
- Management of installation and logistics
INTILION manages project coordination and ensures the aligned delivery and installation of system components. Centralized project management coordinates all trades and project partners, ensuring that installation and system integration are completed on schedule.

Installation & commissioning
Installation and technical integration of the battery energy storage system form the core of the execution phase.
Key aspects
- Installation and cabling of the battery system
- Integration of grid control and monitoring systems
- System testing and commissioning
In this phase, battery systems, inverters, and control systems are installed and interconnected. At the same time, grid control is integrated to enable regulation and monitoring of energy flows.
Technical system tests and inspections ensure that all components operate reliably and as intended.

Certification & grid connection
Before transitioning to grid operation, technical testing and certification processes are carried out.
Key aspects
- Protection systems and protection testing
- Communication and signal testing
- Preparation of grid compliance documentation
To prepare for grid operation, communication and signal tests are carried out in coordination with the grid operator. In addition, protection testing is performed, and technical documentation and test reports are prepared.
These steps support the issuance of grid compliance declarations and plant certifications in accordance with applicable grid requirements.
Result of the EPC phase
At the end of the EPC phase, you will have a fully integrated and tested battery energy storage system.
The result:
- Installed and fully integrated battery energy storage system
- Verified technical system performance
- Documented tests and grid compliance records
- Prepared grid compliance and certification
The system is ready for transition into grid operation.