120kW
System Capacity
168,000
kWh Annual Yield
42%
Energy Bill Reduction
6.8 yrs
Payback Period
Project Overview
Cutting Energy Costs for a High-Consumption Facility
A Williams Landing logistics and warehousing company approached CMD Vertex Engineering seeking to reduce their significant daytime electricity costs. Operating Monday to Saturday with peak loads between 7am and 5pm, the facility was an ideal candidate for a large-scale rooftop solar system.
CMD Vertex Engineering was engaged to provide full engineering consultation — from initial feasibility and system design through to DNSP grid connection approval and contractor tender support.
Challenges
What We Were Up Against
- !Ageing roof structure requiring load assessment before panel placement
- !Complex three-phase electrical switchboard upgrade to handle export capacity
- !DNSP application for 120kW export limit approval under AS/NZS 4777.2
- !Shading analysis required due to rooftop HVAC units and parapet walls
- !Tight project timeline to meet end-of-financial-year incentive deadline
Our Solutions
How We Delivered
- ✓Structural engineering review and reinforcement specification for roof zones
- ✓Full switchboard design with protection relay and metering requirements
- ✓Prepared and lodged DNSP grid connection application — approved in 3 weeks
- ✓String-level shade modelling to optimise panel layout and inverter selection
- ✓Phased construction plan delivered on time within the 8-week window
Project Outcomes
Results That Speak for Themselves
"CMD Vertex handled everything from the structural assessment to the DNSP approval. We had zero surprises on site and the system was commissioned on schedule. The savings have exceeded our projections."
Operations Manager — Williams Landing Logistics Facility
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