Tracker Configuration

pvnode supports fixed, single-axis, and dual-axis tracker systems. Set tracker_system_type to choose:

Tracking only applies to the first PV array.

Single-Axis Tracker

When tracker_system_type=1, use single_axis_tracker_config to define the tracker geometry. The format is four values separated by colons:

Code
single_axis_tracker_config=axis_azimuth:axis_tilt:max_rotation:backward_tracking

Example:

Code
single_axis_tracker_config=180:0:90:T

This configures a tracker with:

• Axis oriented south (180°)
• No axis tilt (0°)
• Full rotation range (±90°)
• Backward tracking enabled to reduce row shading at low sun angles

Dual-Axis Tracker

Set tracker_system_type=2. No additional configuration needed — the system automatically optimizes for maximum irradiance at every timestep.

Comparing Fixed vs. Tracked

To quantify the yield gain from tracking, run two requests for the same location — one with tracker_system_type=0 and one with your desired tracker configuration. Compare the spec_watts or pv_watts output.