STI Norland Develops Fourth Generation Dual-Row Single-Axis Solar Trackers


More than 850 MW of the STI-H250 dual-row trackers have been supplied so far.


STI Norland, a global supplier of solar trackers and fixed-tilt arrays, has launched the fourth generation of its STI-H250, the first dual-row, single-axis solar tracker in the world.

STI Norland was a pioneer in 2017 when it developed the STI-H250 and has since supplied and installed it in more than 30 PV plants, adding up to more than 850 MW of tracker capacity.


The solar tracker consists of two torsion beams positioned in a north-south axis on which PV modules are mounted. The two beams are linked and rotate simultaneously, following the path of the sun in the sky. They are moved by just one motor, cutting supply and maintenance costs.

In addition, the fourth generation of STI-H250 considerably increases its adaptability to complex terrain and irregular layouts. The data collected during months of on-site experience enabled STI Norland’s R&D department to keep applying improvements to the product and reach the current advanced version of the STI-H250.

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“After two years of proven success of our dual-row trackers, other manufacturers are now following our steps,” said STI Norland chief executive Alberto Pérez Echeverría. “It clearly proves that we were on the right track when STI Norland bet on the design and manufacture of dual-row trackers. Compared to our competitors we are now so much ahead in terms of experience and product development.”

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