Landing in Macao! Pavales tracking drive systems are supporting the rooftop photovoltaic project at the Substation in New Town Area A.

The roof’s installable area is limited, so it is essential to maximize power generation per unit area.

Macau is located along the coast, characterized by high temperatures, high humidity, and severe salt‑fog exposure, and it faces a perennial threat from typhoons, placing extremely stringent demands on the reliability of support structures and drive systems.

Located in the heart of a residential area, the equipment must feature low noise, be maintenance-free, and provide ample safety redundancy.

The project ultimately adopted a horizontal single-axis tracking racking system: compared with fixed mounts, the tracking system enables the modules to remain aligned with the sun throughout the day, typically boosting power generation by 15% to 25%. On Macau’s rooftop spaces, where every square meter is at a premium, this solution maximizes solar energy capture from every available inch of sunlight.

02 PA7 electric actuator, the “heart” of the tracking system

For this project, the tracking drive unit is equipped with a Pavales PA7 series electric actuator. Key parameters:

In response to Macau’s maritime climate and typhoon conditions, the PA7 demonstrates three key advantages in this project:

01 
Precision Light Tracking: With a 900 mm travel range and an intelligent tracking algorithm, it delivers fully automated operation—returning to its home position at dawn, continuously adjusting its angle throughout the day, and retracting at sunset.

02 
Worry-free against typhoons: IP66‑rated high‑grade protection ensures resilience against heavy rain and salt‑spray corrosion; in high‑wind mode, the pushrod locks the bracket at a safe, fully horizontal position, while the structural design helps withstand typhoon‑level impacts.

03 
Long-term maintenance-free operation: DC drive, smooth and quiet performance, well-suited for environments such as substation rooftops that are sensitive to electromagnetic conditions and limited maintenance windows, thereby reducing lifecycle O&M costs.

03 A Real-World Record of Engineering Racing Against the Weather

From the chemical anchors in the column bases, to the assembly tolerances of the beam pivots, and to the aligned installation of the joints at both ends of the push rods, every detail directly determines the reliability of the tracking system. The Pavales team collaborated on-site with the project’s general contractor, completing delivery and commissioning according to the scheduled milestones.

 

 

04 Getting Photovoltaics Moving in the Greater Bay Area

The Macau New City project marks another successful deployment of Pavalace’s tracking drive systems in the high‑density urban environments of Hong Kong and Macau. From desert‑based solar farms to city rooftops, and from fixed mounting structures to intelligent tracking solutions, Pavalace continues to leverage its core expertise in electric actuators and control systems to deliver reliable drive solutions for a wide range of complex operating conditions.

Looking ahead, the company will continue to deepen its presence in the Guangdong–Hong Kong–Macao Greater Bay Area and overseas markets, enabling more rooftops to harness the power of the sun.