Electrical Design and Technical Advisory for Critical Energy Infrastructure
Supporting Utilities, Developers and Engineering Teams across New Zealand and the Pacific
Design and Advisory
Cirflow provides specialist electrical design and technical advisory services for critical infrastructure projects, supporting developers, utilities and consulting engineering teams across New Zealand and the Pacific.
Our work spans early-stage concept development through to detailed design, design review, integration planning and commissioning readiness. We focus on systems where reliability, compliance and operational continuity are critical.
Typical projects include transformer and switchgear installations, protection and control systems, HV and LV cable networks, DC systems, earth grid design, and the integration of utility-scale solar PV and Battery Energy Storage Systems (BESS). Much of this work occurs in remote or island-based power networks where reliability, maintainability and practical construction considerations are essential.
Scope of Services
Design and advisory support includes:
- Transformer and switchgear specification and design
- Protection, control and secondary systems design
- Utility-scale PV and BESS design and integration support
- Control system architecture and SCADA integration
- Grid connection and compliance support
- Independent technical review of third-party designs
- Commissioning strategy and readiness assessments
- Safety in Design (SiD) assessments
- Technical coordination of complex infrastructure projects
We work at both project and system level — ensuring that individual assets function correctly within the broader network environment.
Specialist Experience in Remote and Island Power Systems
Cirflow has supported infrastructure projects across remote and island-based power networks throughout New Zealand and the Pacific. This has included transformer replacement planning, BESS integration, diesel generation-related design support, and commissioning support in constrained island networks where system resilience is critical.
These environments present unique challenges, including:
- Limited redundancy
- Logistical constraints
- Network stability considerations
- Integration of renewable generation and storage systems
- Highly corrosive environments
- Challenging earthing conditions
- Limited local support
Our advisory approach reflects a practical understanding of these constraints, ensuring designs are robust, maintainable, aligned to standards and operational realities.
Engineering Insight from Design Through Commissioning
Cirflow’s design and advisory work is informed by direct involvement in testing, commissioning and live network environments, which helps ensure:
- Buildable, practical designs
- Clear protection philosophies
- A smoother transition from design to commissioning to hand-over
- Reduced rework and fewer site-level issues
Our objective is to provide engineering clarity and risk reduction throughout the project lifecycle.