Testing and Commissioning Support for Substations, Solar PV and BESS Projects
Engineering-led testing, commissioning and energisation support across New Zealand and the Pacific
Cirflow provides engineering-led testing and commissioning support for critical electrical infrastructure projects across New Zealand and the Pacific.
We support developers, utilities and engineering teams with commissioning planning, technical oversight and coordinated specialist testing for substations, protection systems, solar PV and battery energy storage projects.
Our focus is on safe energisation, system verification and operational readiness.
Specialist Testing Services
Cirflow provides specialist testing support for the verification and commissioning of complex power systems, including transformer installations, protection and control systems, utility-scale solar PV and battery energy storage systems.
This capability allows us to deliver practical testing services alongside engineering oversight, helping clients move efficiently from installation through to energisation and handover.
Cirflow maintains a dedicated suite of specialist test equipment selected for mobility, reliability and use in remote or operationally constrained environments.
This allows rapid mobilisation across New Zealand and Pacific projects where logistics, outage windows and site access must be carefully managed. By maintaining our own equipment, we reduce reliance on third-party availability and improve scheduling certainty, responsiveness and cost control.
Testing and Commissioning Services include:
- Transformer primary testing and condition assessment
- Protection relay secondary injection testing
- Circuit breaker and micro-ohm testing
- Instrumentation transformer testing
- Verification of protection and logic settings
- Functional testing of control and SCADA interfaces
- Earth grid testing
- Soil resistivity testing
Testing activities are delivered in coordination with appropriately licensed electrical workers, site personnel and network representatives as required. Cirflow provides engineering oversight, test documentation and technical interpretation of results to support project acceptance, compliance and asset handover.
Commissioning Planning and Execution Support
Beyond physical testing, Cirflow supports the wider commissioning process through:
- Commissioning strategy and planning
- Integrated test plans and commissioning sequencing
- Interface coordination with network operators
- Switching procedure development and review
- Risk assessment and commissioning readiness reviews
- Constructability, operability and maintainability reviews
Engineering-Led Assurance
Cirflow helps bridge the gap between design intent and operational reality
Testing and commissioning are sometimes treated as procedural close-out activities. Cirflow approaches commissioning as an engineering function — verifying system performance, confirming protection philosophy, and ensuring new assets integrate safely and reliably within live networks.
This approach is particularly important in remote and island-based power systems, where limited redundancy and constrained network conditions demand careful verification and staged energisation.
Flexible Engagement Options
Cirflow can support projects through:
- Standalone commissioning advisory
- Managed testing packages
- Integrated support within larger infrastructure projects
- Training and mentoring of local engineers and technicians during commissioning and handover
- Independent commissioning review, witnessing and verification on behalf of project developers
Services can be delivered in partnership with licensed contractors, site teams and utility personnel as required.
