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Tracking technology is not new to the market, but single axis tracking solutions have recently become a standard in utility-scale plants. Nearly 70% of utility-scale plant installed in 2018 used tracking systems.

Single-axis trackers will gather less energy per unit compared to dual-axis trackers, but with shorter racking heights, they require less space to install, creating a more concentrated system footprint and an easier model for operations and maintenance.

Single-axis trackers are split into centralized and decentralized tracker types. Centralized or distributed trackers use a single motor to power a driveline between rows that will move an entire segment of panels. Decentralized systems have one motor per tracking row. There are also instances of trackers with motors present on every set of racking, making rows more adjustable during installation and in some cases allowing them to track independently of neighboring modules.