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Sol-Bright Secures Contract to Supply Water-Free Robotic Cleaners for NTPC’s 250 MW Solar Plant in Rajasthan
Jan 03, 2026
China-based clean technology firm Langfang Sol-Bright New Energy has entered into an agreement with Rays Power Infra to supply fully automated, water-free robotic solar module cleaning systems for NTPC’s 250 MW solar photovoltaic project located in Bikaner, Rajasthan.
The agreement was finalised during the recent India visit of Xu Zhengxiong, Chief Executive Officer of Sol-Bright, according to a company announcement. As part of the contract, Sol-Bright will deliver robotic cleaning solutions specifically engineered for single-axis (1P) tracker configurations.
The company stated that the systems are designed to mitigate dust-related performance losses while enabling sustainable, water-free operations, a critical requirement for the arid conditions of the Bikaner region. By maintaining cleaner module surfaces, the technology is expected to enhance overall power generation efficiency.
Commissioning of the robotic cleaning systems is scheduled for Q2 2026, marking another milestone in the deployment of advanced automation solutions for large-scale solar installations in India.
The collaboration with Rays Power Infra further strengthens Sol-Bright’s footprint in India’s utility-scale solar segment and aligns with broader industry efforts to improve operational reliability and long-term asset performance.
Earlier, in November 2025, Sol-Bright announced a separate contract to supply water-free robotic cleaning systems for AMPIN Energy Transition’s 160 MW wind–solar hybrid projects in Rajasthan. That agreement includes both fully automatic and semi-automatic cleaning solutions compatible with IP single-axis tracker systems.
According to the company, Sol-Bright has deployed nearly 100,000 robotic cleaning units globally, supporting approximately 40 GW of solar capacity across more than 195 utility-scale projects worldwide.