Sebastian Jakubzik

CTO · SecuSolar Co., Ltd.
PV + BESS hybrid systems Grid integration / export limitation Commissioning & troubleshooting Owner’s engineering

Summary

CTO at SecuSolar, focused on engineering-led solar EPC and long-term performance. I work where electrical constraints meet commercial reality: turning site data into a buildable scope, clean documentation, and systems that operate safely.

Typical work

  • PV system design, single line diagrams, protection coordination and as-built documentation
  • Grid compliance: zero-export / self-consumption controls, relays, SmartLogger / Modbus integration
  • Hybrid concepts: PV + battery + diesel / grid, dispatch logic and operational strategy
  • Commissioning support: testing, punch lists, troubleshooting and performance verification

Principles

  • Safety and traceability first (LOTO discipline, clear drawings, measurable acceptance tests)
  • Realistic assumptions (no marketing-only yield claims)
  • Build systems that are monitoring-ready and easy to maintain