Department: Engineering / Renewable Energy

Reports To: Head of Engineering / Project Director

Location: Japan (Tokyo or other major city)

Employment Type: Full-time

Position Summary:

The Senior BESS (Battery Energy Storage System) Electrical Engineer leads the technical design, development, and implementation of utility-scale battery storage projects in Japan. This role is responsible for ensuring compliance with local regulations, managing grid connection processes, providing technical support throughout the project lifecycle, and collaborating with internal and external stakeholders to deliver high-performance, safe, and reliable BESS solutions.

Key Responsibilities:

• Lead technical review and provide expert liaison support for the development and construction of BESS projects, ensuring alignment with project specifications and regulatory requirements.
• Oversee and support construction activities, including EPC contract review, process management, and safety management for BESS installations.
• Supervise and complete procedures with administrative bodies for permits and registrations required for BESS plant development and construction.
• Lead grid connection discussions with utilities, manage interconnection applications, and ensure compliance with Japanese grid codes and standards.
• Assess project specifications, storage needs, and grid requirements to propose optimal BESS configurations and system architectures.
• Design, configure, and validate electrical systems for BESS, including control panels, protection schemes, and cable schedules for both AC and DC circuits.
• Evaluate and select BESS components and suppliers, ensuring technical capability, quality, and compliance with relevant standards (e.g., IEC, UL, JIS).
• Perform system modelling, simulations, and technical due diligence to optimize performance and reliability.
• Develop and implement quality control plans, inspection checklists, and acceptance criteria for BESS installations.
• Support early-stage project development by investigating site potential and providing technical input on feasibility.
• Mentor junior engineers and contribute to technical knowledge sharing within the team.
• Prepare and present technical documentation, reports, and project updates to stakeholders.
• Travel domestically for site visits, meetings, and project oversight as required1.

Required Qualifications:

• Bachelor’s degree in Electrical Engineering, Control Systems, or a related field; a Master’s degree or relevant certifications are advantageous.
• Minimum 8–10 years of professional experience in electrical engineering, with a strong focus on BESS or power plant development.
• Deep understanding of BESS technologies, electrical system design, grid integration, and Japanese regulatory requirements.
• Experience negotiating with government agencies, utilities, and EPC contractors.
• Practical experience in the development, design, quality control, and maintenance of electrical systems for infrastructure or energy projects.
• Fluent Japanese and business-level English proficiency required.
• Ability to work independently, manage multiple tasks in parallel, and mentor junior staff.
• Strong communication, problem-solving, and team collaboration skills.
• Willingness to travel within Japan as needed.

Preferred Skills and Attributes:

• Experience in both renewable energy and energy storage project development in Japan.
• Familiarity with international and Japanese electrical standards (e.g., IEC, UL, JIS).
• Knowledge of AutoCAD Electrical, EPLAN, or similar design tools.
• Qualifications such as Chief Electrical Engineer or equivalent are a plus.
• Action-oriented, flexible thinker with a proactive approach to problem-solving and continuous improvement.