Hybrid Geometry: Designed for higher-latitude applications, Asun’s tilted single-axis tracker combines a fixed north-south tilt.  (Photo Credit: ASUN)
Technology

Tilted Single-Axis Tracker From ASUN

Derived from a dual-axis design, the system introduces a fixed tilt with E-W motion to improve seasonal yield and land utilization

Shravan Chunduri

  • ASUN enters the survey with 2 tracker solutions, including a dual-axis system and a tilted single-axis tracker

  • Combines fixed tilt up to 50° with ±45° east-west motion, addressing seasonal misalignment seen in conventional HSAT designs

  • Unique E/W-aligned table with module-level movement reduces pitch, enabling higher land-use efficiency with a GCR of 71%

The 4th  TaiyangNews Market Survey on Solar Trackers includes ASUN as a new entrant, contributing data for two tracker solutions. While one of these is a dual-axis system categorized under DAT, the company’s tilted single-axis tracker represents a distinct approach within the HSAT segment. Unlike conventional horizontal single-axis designs, ASUN’s solution is derived from its dual-axis platform and is intended to improve seasonal alignment, particularly in higher-latitude regions, while maintaining a simpler structural configuration.

Introduced in 2024, the Asun Tilted Single-Axis Tracker is derived from the company’s 2-axis design by fixing the tilt direction and enabling rotational movement along the east-west axis. The tracker also supports tilt angles up to 50° in the south-facing or north-facing direction, depending on hemisphere, combined with ±45° east-west motion. Another important design change is that the tracker table is aligned along the E/W axis rather than the N/ S axis, as is typical in single-axis designs. Each module is mounted in a frame that moves along the E/W axis. That means instead of moving the entire tracker table, only the modules in the frame move. According to ASUN, this reduces the pitch between the trackers, thereby allowing for greater land use. The tracker comes with a ground coverage ratio of 71%. The company also emphasizes that the design benefits bifacial modules, as the spacing between the modules improves the capture of reflected light.

The tracker accommodates up to 30 modules per row within a 45 × 2.6 × 1.5 m footprint, with a system weight of approximately 750 kg. The system uses C-section foundations and offers a bifacial-optimized spacing. This technology, also patent-protected across multiple regions, is positioned as a structurally simpler alternative to the full 2-axis system while retaining the benefit of adjustable tilt. It supports all commercial module formats, operates at 1,500 V DC, and is compatible with robotic module-cleaning solutions. It features linear-actuator drive systems with ±2° accuracy, brushed DC permanent-magnet motors, and LoRaWAN or RS-485 communication options. The tracker is designed for wind stowage at 60 km/h, can tolerate wind speeds of up to 170 km/h, and can maintain a storm-safety position of 0°.

Asun offers a 10-year warranty on the structure and a 3-year warranty on the motor and electronics. The delivery time for the product is listed as 6 months, and the distribution area covers India and Nepal.

The text is an edited excerpt from TaiyangNews’ Market Survey on Solar Trackers 2026, which can be downloaded for free here.