Sunfolding T29™ Single Axis Tracker

System overview

The Sunfolding T29™ Single-Axis Tracker uses compressed air to drive solar projects with a unique combination of power, accuracy, and reliability. The system has one of the lowest parts counts in the industry.

Instead of using complex machinery with a huge amount of steel, there is one unit, AirDrive X, for tracker movement. It weighs less than 50 lbs: two people can lift and attach AirDrive X to posts in the ground.

Pre-assembled, plug-and-play supply air systems deliver compressed air for 10 MW blocks and are co-located with inverters. Pre-sized pneumatic harnesses link up each tracker with a simple connection of air.

Different tracker lengths. One cost.

Variable length tracker rows 

Sunfolding trackers can follow the land with variable length tracker rows. Scale down to 2 posts without impacting costs. Fill sites of any shape or size and cover up to 17.5% grade N-S slopes with minimal earthwork. 

Simple electrical design with more solar

No gaps within individual rows for self-powered modules or other equipment means more DC per acre. Sunfolding trackers fit neatly into existing electrical designs using 1-string or 3-string trackers.

Move less dirt with shorter tracker rows

hilly no grading

Fill sites of any shape or size

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Learn about the advantages

Reduce construction costs

Crews installing Sunfolding trackers carry out fewer tasks because they are installing a single AirDrive X rather than dozens of components. The Sunfolding T29’s uniform purlins, posts and pneumatic harness enable repeatable and scalable processes, leading to less waste and enhanced quality.

Reduce labor time

Cut walking on the project site by 54 miles per MW with fewer unique components, fewer crews, smaller crews, and shorter tracker rows.

Save labor costs

Save 15 percent on direct labor and overhead.

Sunfolding bar graph showing comparative costs for labor

Resources to learn more

Adapt to local conditions

Protect solar assets by adjusting and adapting to local environmental and weather conditions.

Weather: Smart controls for tough weather 

Sunfolding protects solar plants from damage with stow modes for hail, snow, wind, and floods. With remote monitoring capability, Sunfolding continuously collects data on tracker system performance and can deliver commands to the field using industry-standard SCADA.

Terrain: Customizable backtracking 

Improve energy production by tailoring tracking to site specifics with customizable backtracking.

Power: No batteries needed

In the event of a power outage, Sunfolding trackers move to stow automatically or manually with air storage, eliminating the need for backup batteries.

Move any module

Sunfolding trackers provides optimal module support with a flat tabletop mounting surface that enables an ergonomic, safe, and rapid installation for any solar module. Our purlin-based system also ensures less strain on the modules during system lifetime.

Module agnostic

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Large format

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Where seconds count, save minutes

With a waist-high module table, two workers can easily install modules on Sunfolding trackers. No need to climb up ladders or down under the modules.

Simple module installation

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See a Sunfolding plant up close

Air + Solar

Advanced compressed air powers the Sunfolding T29™ because of its compelling advantages. Air power can support loads up to 100,000 lbs. It runs continuously with no need for battery backup and no risk of overheating. And it handles harsh weather.

See our white paper and other resources to find out how Sunfolding took the materials and processes that serve the $5 billion pneumatics industry and applied them to large-scale solar.

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The Power of Air white paper

Find out how pneumatics, a 360-year-old technology, is accelerating growth in large-scale solar.

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Questions we get about pneumatics

Project partners want to know about air pressure, moisture, animals, and more. Here are the most common questions we hear and our answers.