ARRAY DuraTrack D2S™ Dual Row Tracker

Traditional active-stow architectures typically rely on sensors, communications systems, power availability, and control logic to move tracker rows into protective positions during wind events. DuraTrack D2S uses ARRAY Wind XP™, a passive wind stow technology, that responds mechanically at the row level when wind-induced loading reaches the design threshold. Because the primary wind-response function is built directly into the tracker row, wind protection does not depend on site-wide command execution for its core operation. This approach can help reduce unnecessary site-wide stow exposure, provide wind protection before commissioning, and reduce dependence on active-system inputs for structural wind response.

Wind conditions are not always uniform across an entire solar site. Local terrain, wind direction, and row exposure can create different loading conditions across the field. DuraTrack D2S responds at the row level, allowing affected rows to move toward lower-load positions while unaffected portions of the site continue tracking and producing energy. This approach can help reduce unnecessary site-wide stow exposure and associated production losses during wind events.

Passive wind stow uses a mechanical response triggered by wind-induced torque rather than relying on a site-wide command to initiate protection. Because the primary wind-response function is built directly into the tracker row, passive wind protection remains available without depending on communications systems, batteries, or external power sources.

DuraTrack D2S was designed to help reduce balance-of-plant costs through installation-friendly architecture, increased site density, and terrain-following flexibility. Internal installation analysis showed a 19.3% reduction in complete tracker assembly labor compared with a representative active-stow tracker baseline, while terrain-following capability can help reduce grading and foundation exposure where site conditions support those outcomes.

Construction is often one of the most vulnerable periods in a solar project’s lifecycle because trackers may not yet have full communications, controls, or operating power available. Because DuraTrack D2S uses passive mechanical wind protection, its primary wind-response function is available before commissioning and does not rely on active command execution. This can help reduce construction-phase wind exposure while simplifying project execution.

Yes. DuraTrack D2S supports up to 2° pile-to-pile terrain-following capability, providing greater adaptability across uneven terrain. This flexibility can help project teams reduce grading requirements, minimize foundation exposure, and improve constructability on challenging sites.

DuraTrack D2S is designed for compatibility with ARRAY SmarTrack® optimization technologies, enabling advanced backtracking strategies, diffuse light response capabilities, and integrated controls functionality. Together, the mechanical tracker architecture and controls layer are designed to support responsive operation across changing site conditions.

DuraTrack D2S can fit up to 6.3% more installed capacity on the same land area compared with tracker designs that require bearing-housing gaps. This increased density can help developers maximize constrained sites or increase row spacing while maintaining comparable capacity, depending on project priorities.

DuraTrack D2S combines passive wind protection, self-powered controls, and reduced dependence on active-system inputs to simplify the operating model. By reducing routine battery utilization and limiting reliance on active-stow command chains, the platform is designed to help reduce maintenance exposure over the life of the asset.

DuraTrack D2S is built on ARRAY’s established DuraTrack® mechanical design philosophy and extends technology and design principles that have supported more than 100 GW of solar tracker deployments globally. The platform is also supported by third-party-reviewed validation, field testing, and ongoing performance analysis. As with any solar project, expected results should be evaluated based on site-specific conditions and project objectives.

Tracker selection increasingly affects more than energy production. Site utilization, labor requirements, grading costs, construction schedules, wind-related production losses, maintenance exposure, and long-term operating costs can all influence project economics. DuraTrack D2S was developed to help address those factors through a combination of installation-friendly architecture, terrain-following flexibility, passive wind protection, intelligent optimization, and simplified operating architecture.