Single Axis Tracker and Terrain Undulation

[dtarin]

Hello,

Since PVsyst cannot model trackers on uneven, undulating terrain, does anyone have any information or guidance on how one can approximate performance of single axis trackers with backtracking for these cases? Has anyone done any analysis with data from a site with these terrain conditions, to come up with some sort of de-rate factor?

Thanks.

[André Mermoud]

For the backtracking calculation, this is not only a lack of PVsyst, but a real problem.

The first thing is to think about how to define the backtracking with uneven PV trackers. The backtracking limit will be different for each tracker, and the exact calculation implies an interdependence between the trackers.