Solbright Technology

What Solbright Technology does

Solbright Technology (廊坊思拓新能源科技有限公司, dba Sol-Bright), founded in 2013 and headquartered in Langfang, Hebei Province, China, designs and manufactures autonomous dry-hung photovoltaic cleaning robots and wind turbine access equipment for the global utility-scale solar and wind operations and maintenance market. The company has developed seven generations of cleaning robots featuring a proprietary torsional robot structure that adapts to angular deviations between PV arrays, gyroscope-based auto-correction, gearbox-driven transmission, and IP65-rated operation across -40°C to 70°C with wind resistance up to 55 m/s. The product line spans standard dry-hung robots, distributed units, crawler-track vehicles, intelligent ferry vehicles, and semi-automatic variants, with each unit integrating into plant SCADA systems, weather stations, and single-axis trackers for autonomous coordinated operation. A complementary wind power product line launched in 2022-2023 includes tower elevators, climbing devices, fall arresters, and ladders for wind turbine maintenance.

The company monetizes through one-time hardware sales of cleaning robots and auxiliary steel bracket structures to solar PV plant operators and EPC contractors, supplemented by installation, commissioning, and ongoing after-sales and O&M services delivered via localized teams in China, India (Rajasthan), and the UAE (Dubai). Distribution is exclusively direct enterprise sales with no e-commerce or self-serve channel, supported by active participation in major industry exhibitions (SNEC, WFES, REI India, Intersolar South America, CWP). The customer base includes the world's largest energy developers and EPC firms, including Adani, ACWA Power, Sterling & Wilson, L&T, China Energy Engineering Corporation, Sembcorp, EDF, Jinko, Masdar, ENEL Green Power, ReNew, and ENGIE, with cumulative deployments across 35+ countries totaling 220+ power stations, 50GW+ installed capacity, and 15,000+ units supplied. The company holds 110+ patents and maintains ISO 9001/14001/45001 certifications plus TÜV SÜD Witness Laboratory qualification.

Name

Solbright Technology

Legal name

廊坊思拓新能源科技有限公司

Website

https://solbrighttech.com

Company type

Private

Founded year

2013

Operating status

Operating

Headcount range

1–10 employees

Short description

Solbright Technology (Sol-Bright) designs and manufactures autonomous dry-hung photovoltaic cleaning robots and wind turbine access equipment for global utility-scale solar and wind plant operators and EPC contractors, with 15,000+ units deployed across 35+ countries.

Ownership category

akta.pro rank

Product category

Solar PV Cleaning Robotics

akta.pro industry

PRIMARYHSAEAJAL

Solar Panel Cleaning

Home & Personal Services/Home Cleaning & Housekeeping/Window & Glass Cleaning

SECONDARYEUAEAGAB

Renewable Energy Asset O&M (Wind, Solar, Hydro, Geothermal)

Energy, Utilities & Environment/Energy Infrastructure & Services (EPC, O&M, Field Services)/Operations & Maintenance (O&M) Services for Energy Assets

SECONDARYEUAMAGAB

Distributed & Commercial Renewable O&M (Rooftop Solar, C&I Wind, Small Hydro)

Energy, Utilities & Environment/Renewable Energy (Solar, Wind, Hydro & Geothermal)/Renewable Operations, Maintenance & Asset Management

Keywords

• Photovoltaic cleaning robots
• Solar O&M equipment
• Waterless panel cleaning
• Wind turbine access equipment
• Solar plant maintenance

Headquarters

HQ city

Beijing

HQ country

China

HQ region

Asia

Offices5 records

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

Supply Chain, Personnel, Technology or R&D, Operations, Marketing or Sales, Infrastructure

Revenue model

1. PV Cleaning Robot Equipment Sales: Sale of photovoltaic cleaning robots (6th and 7th generation) and auxiliary steel support structures to solar PV plant operators and EPC contractors. Equipment includes dry-hung, distributed, crawler-track, and shuttle car variants. Revenue is one-time per project, with repeat orders from major customers.
2. After-sales and O&M Services: Provides installation, commissioning, and ongoing operation & maintenance support for cleaning robots. Localized service teams in India, UAE, and China support project sites. Services include on-site engineering, remote monitoring via AI O&M platform, spare parts supply, and technical support.

Go-to-market motion1 record

Distribution channels3 records

Marketing channels5 records

Core offering

Solbright (Sol-Bright / Sitou New Energy) designs, manufactures, and sells automated dry-hung photovoltaic cleaning robots for large-scale solar PV plants, delivering waterless panel cleaning at 99.5%+ efficiency. It also supplies wind turbine tower access equipment (climbers, elevators) plus installation, commissioning, and AI-driven O&M services.

Product overview

Solbright Technology offers a comprehensive intelligent photovoltaic cleaning and wind power access solution. The core product line includes the dry-hung intelligent cleaning robot series (6th and 7th generation), distributed cleaning robots, crawler-type cleaning vehicles, and intelligent ferry vehicles—all forming an integrated automated cleaning system for solar power plants. The product portfolio spans multiple variants including dry-hung, semi-automatic, and distributed models to serve different scenarios such as deserts, plains, rooftops, and fish-fishery complementary installations. For wind power, the company offers climbing devices and tower elevators for safe tower access. Supporting products include zinc-aluminum-magnesium steel brackets and auxiliary steel structures. All products are managed through an AI-powered intelligent operation and maintenance platform enabling autonomous operation, remote monitoring, and big data analytics.

Differentiator

Problem solved

Functional benefit

Products and services

• Dry-Hung Photovoltaic Intelligent Cleaning Robot Automated dry-cleaning robot that hangs directly on PV modules for self-propelled, waterless cleaning at 99.5%+ efficiency. Operates -40 C to 70 C, IP65-rated, integrates with SCADA and tracker systems, and features a torsional structure to adapt to angle deviations between panel arrays. Core product for large-scale ground-mount solar plants (6th and 7th generation).
• Distributed Intelligent Cleaning Robot Lightweight, flexible cleaning robot designed for distributed rooftop PV and narrow spaces, with intelligent path planning and autonomous obstacle avoidance for irregular array layouts.
• Crawler-Type Photovoltaic Cleaning Vehicle Robot All-terrain cleaning robot with a crawler design for complex ground conditions, providing strong passability across various PV mounting bracket types with intelligent obstacle planning.
• Intelligent Ferry Vehicle Auxiliary vehicle for transporting cleaning robots between PV arrays, with soft brushes for damage-free cleaning and efficient transport.
• Dry-Hung Semi-Automatic Photovoltaic Cleaning Robot Semi-automatic cleaning robot suited to irregular PV array layouts, optimizing total system cost while maintaining reliable cleaning performance.
• Climbing Device (Climber-Free Device) Motor-driven climbing equipment for wind turbine towers that replaces manual climbing. Features 18m/min lifting speed and multiple safety protections including triple-lock mechanism, overload protection, and anti-slip monitoring. For wind farm O&M personnel.
• Tower Elevator Rack-and-pinion elevator system for efficient personnel and material transport within wind turbine towers, with safety-first design to improve wind farm operational availability.
• Zinc-Aluminum-Magnesium Photovoltaic Bracket Steel bracket made from zinc-aluminum-magnesium alloy offering higher strength, lighter weight, and better corrosion resistance than traditional steel, suitable for extreme climates with service life exceeding 30 years.
• After-sales and O&M Services Installation, commissioning, and ongoing operation & maintenance support for cleaning robots, delivered by localized service teams in India, UAE, and China. Includes on-site engineering, remote monitoring via the AI O&M platform, spare parts supply, and technical support.

Quantifiable outcome

• Power generation improvement of 15-25% in desert environments (per CCTV interview, WFES 2024)
• +7 more outcomes

Named customers18 records

Segments3 records

Ideal customer profiles3 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Integration3 records

AI capability5 records

Feature10 records

Partnerships

Twelve partnerships are on record, tiered major, core and minor.

• Azure PowermajorStrategic or Co-development Partner · 1 October 2025Azure Power, a leading Indian solar energy company, signed a strategic cooperation agreement with Sol-Bright at REI 2025 India exhibition. Azure is listed on the NYSE and operates over 7GW of renewable energy assets globally.
• AMPIN Energy TransitionmajorStrategic or Co-development Partner · 1 October 2025AMPIN Energy Transition, an Indian renewable energy developer, signed a strategic cooperation agreement with Sol-Bright at REI 2025 India exhibition.
• ENGIEmajorStrategic or Co-development Partner · 3 July 2025International energy giant ENGIE sent a delegation to visit Sol-Bright headquarters in July 2025 for technical exchange on PV cleaning robot technology and future cooperation directions. ENGIE is a global energy industry leader focused on renewable energy, low-carbon energy, and digital energy solutions.
• Sterling & Wilson Renewable Energy Limited (S&W)coreStrategic or Co-development Partner · 11 November 2024Sol-Bright signed a 528MWdc photovoltaic project agreement with S&W to supply approximately 2,000 dry-hung cleaning robots. This is the second major collaboration after the Noor Abu Dhabi Sweihan (PV1) 1,209MWp project in 2018. S&W is a global renewable energy EPC provider (portfolio 17.80+GWP, operations in 29 countries). The project is located in Rajasthan, India, with Sembcorp as the project owner.
• ACWA PowercoreStrategic or Co-development Partner · 16 January 2024ACWA Power representatives (SUNIL NAHATE, 董寅中) visited Sol-Bright headquarters in Langfang in January 2024 for in-depth cooperation discussions. Sol-Bright had previously delivered the Al Dhafra PV2 project with ACWA Power and completed the Saudi PIF2 ASB1 690MWp project. ACWA Power is a major Saudi Arabian power and water desalination developer with projects across MENA and beyond.
• China Energy Engineering Corporation (CEEC / 中国能建)coreStrategic or Co-development Partner · 3 January 2024China Energy Engineering Corporation representatives visited Sol-Bright HQ alongside ACWA Power in January 2024. Sol-Bright had previously signed the Saudi Al Shuaibah 690MWp project with CEEC in April 2023. CEEC is one of China's largest state-owned engineering and construction conglomerates active in international energy projects.
• Larsen & Toubro International FZE (L&T)coreStrategic or Co-development Partner · 24 November 2023Sol-Bright signed a supply agreement with L&T for the Saudi PIF3 Al Kahfah PV Project 1,174MWp photovoltaic cleaning robot equipment. This was Sol-Bright's first project with L&T outside of India, representing a significant expansion of the partnership beyond the Indian market. L&T is a major Indian multinational engineering and construction conglomerate active in renewable energy EPC globally.
• Aggreko (Africa)minorStrategic or Co-development Partner · 3 November 2023Sol-Bright partnered with Aggreko (an international energy equipment company) to install 26 six-meter cleaning robots at the Bisha Gold Mine PV station in Eritrea, Africa. This was the first installation of automated dry-cleaning robots in East Africa.
• Adani Group (India)coreStrategic or Co-development Partner · 1 May 2023Adani Group signed with Sol-Bright for the Khavda 1,370MWp project in India in May 2023. This builds on a prior relationship with Adani that included the HYB 450MW project and others. Adani is India's largest energy developer. The project was scheduled for grid connection in January 2024.
• China Energy Engineering Corporation (CEEC) — Saudi Al ShuaibahcoreStrategic or Co-development Partner · 1 April 2023Signed in April 2023, Sol-Bright and CEEC agreed on supply of cleaning robots for the Saudi Al Shuaibah 690MWp project. The project uses 1P flat single-axis trackers.
• HydroChina Huadong Engineering Corporation (HDEC / 华东勘测设计研究院)coreStrategic or Co-development Partner · 1 August 2020Sol-Bright signed a supply agreement with HDEC for the Oman IBRI II 575MW 1V flat single-axis tracker cleaning equipment. This was the first project combining tracker systems and robotic cleaning systems globally at the time, marking a milestone in integrated solar O&M solutions.
• SB Energy (SoftBank Energy, India)coreStrategic or Co-development Partner · 23 October 2019Sol-Bright signed a long-term strategic cooperation agreement with India's SB Energy in 2019, subsequently providing cleaning systems for 5 projects totaling 2GWdc. SB Energy is backed by SoftBank and was one of India's largest renewable energy developers.

Scale indicators11 records

Recent moves13 records

Expansion highlights6 records

Direct peers

• Ecoppia: Israel-based developer of autonomous, waterless robotic cleaning systems for utility-scale solar PV plants. Ecoppia is the most direct global competitor to Solbright, with overlapping products (autonomous dry-cleaning robots), overlapping customers (utility-scale developers and EPCs), and similar value proposition targeting desert and water-scarce regions.
• NOMADD (Norwegian Offshore Maintenance and Drone Development): Norway-based manufacturer of automated dry-cleaning robotic systems for large-scale PV installations. NOMADD competes head-to-head with Solbright in the waterless robotic PV cleaning category and serves similar utility-scale and EPC customers in EMEA, MENA, and emerging markets.

Broad incumbents

• Nordex: Germany-based wind turbine OEM with global installed base exceeding 50GW. Nordex competes with Solbright's wind products indirectly as a dominant turbine supplier whose customers purchase tower access and O&M equipment — making it a relevant broad incumbent peer for benchmarking scale, certification, and customer relationships in wind.
• Siemens Gamesa: Global wind turbine OEM and wind farm service provider. Siemens Gamesa is the broadest incumbent in wind O&M, with established service contracts and certified tower access solutions that compete indirectly with Solbright's nascent wind product line and define the bar for safety certification and customer expectations.
• Rope Partner: US-based specialist in wind turbine blade maintenance, repair, and access services. Rope Partner is directly comparable to Solbright's wind product line (climbing devices, tower elevators, fall arrest systems), addressing the same wind O&M safety and productivity pain points and serving the same wind farm operators and OEMs.
• Soltec: Spain-based solar tracker manufacturer with utility-scale project development and integrated O&M solutions. Soltec competes with Solbright in the broader solar infrastructure stack — particularly in Iberia, Latin America, and MENA — and overlaps on the same EPC and developer customer base, while offering complementary tracker integration with cleaning systems.
• Array Technologies: US-based, publicly listed manufacturer of solar trackers and integrated PV plant components. Array is a broader incumbent in utility-scale solar infrastructure with overlapping customers (utility-scale developers and EPCs) and an emerging cleaning-integration offering, making it a comparable broad competitor to Solbright in adjacent solar O&M hardware.

Emerging players

• Skyven Technologies: US-based emerging technology provider focused on wind turbine performance optimization and blade maintenance services. Skyven is comparable to Solbright's wind product line as an emerging player applying technology-driven approaches to wind O&M, though with a narrower initial focus on blade performance rather than tower access hardware.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat6 records

Key risks7 records

Key highlights7 records

Customer concentration

• LinkedInlinkedin.com/company/sol-bright-tech

Compliance8 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles8 records

Subsidiaries2 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Solbright Technology