News

PROJECT CASE / SAUDI ARABIA

Solar-LIT Passes Reliability Acceptance at Haden with 2,017 PV Cleaning Robots

2,017 robots · 130 days to acceptance · 14 valid test days

Haden 2 GW solar project in Saudi Arabia

Project at a Glance

From Installation to RRT Acceptance in 130 Days

The Haden project forms part of Saudi Arabia’s national renewable energy programme and is being built under an EPC contract by a consortium of China Energy Engineering Group (CEEC) companies.

Solar-LIT supplied the North Section’s intelligent cleaning robots and associated management system to support automated cleaning and photovoltaic operations and maintenance (O&M).

Working in the desert’s high temperatures and wind-blown sand, Solar-LIT’s delivery and technical teams coordinated on site with the CEEC consortium on equipment deployment, integrated commissioning and customer training.

The process from mounting the robots on the arrays to RRT acceptance took 130 days. No quality complaints were recorded during project implementation, testing and acceptance.

Coordinated Fleet Operation on 1P Single-Axis Trackers

The project uses 1P horizontal single-axis trackers. Changing module angles create additional demands on robot alignment and stable travel.

Solar-LIT’s robots use intelligent braking and multi-sensor fusion for posture correction. The system corrects deviation and returns the robot to alignment within five seconds, supporting stable travel under dynamic tracking conditions.

Communication gateways and Solar-LIT’s proprietary SCADA management platform provide status monitoring and remote dispatch for all 2,017 robots, supporting coordinated operation across the fleet.

O&M personnel inspecting cleaning equipment at the Haden project

Reliability Verified Across 14 Valid Test Days

Sustained operation is a critical test once a large robot fleet has been deployed. Between 20 September and 4 October 2026, the project’s North Section completed reliability verification covering 14 valid test days.

These are separate availability measures reported for this verification exercise in the North Section.

The completed deployment and reliability acceptance demonstrate Solar-LIT’s capabilities in product reliability, system integration and overseas project delivery.

Supporting Intelligent Solar O&M

As Saudi Arabia advances its Vision 2030 agenda and energy transition, intelligent equipment and engineering delivery capabilities are supporting the development of large-scale renewable energy projects.

Solar-LIT will continue to develop robotic technologies that support intelligent cleaning and O&M across the global solar industry.