150MW Industrial Plant Roof Mounting System | Gansu, China

1. Project Overview
 

•Project Background: The project is located in Gansu Province, utilizing the rooftop resources of large industrial parks to develop a distributed photovoltaic system with a total installed capacity of 150MW. As one of the largest industrial distributed PV projects in Northwest China, it serves as a key demonstration project for promoting the green and low-carbon transformation of energy-intensive industries and advancing regional energy structure optimization. Through the integrated “PV + Industry” model, the project aims to transform traditional industrial infrastructure into a green energy production base, enabling enterprises to reduce energy consumption, lower emissions, and achieve sustainable development.
 

•Project Requirements: Implemented across complex industrial rooftops, the project required a safe, efficient, and highly scalable customized solution. Specifically, the system needed to:（1）Adapt seamlessly to diverse existing metal roof structures and enable reliable installation without damaging the roof surface. （2）Strictly comply with local load requirements, including a design wind pressure of 0.3 kN/m² and a snow load of 0.15 kN/m².（3）Demonstrate strong large-scale coordination and rapid deployment capability, minimizing disruption to normal production activities across multiple enterprises.

2. Project Challenges
 

•The industrial park comprises factory buildings with various metal roof profiles—with differing ages and load-bearing capacities. The mounting solution therefore required exceptional versatility and flexibility to address multiple roof types through a unified design approach.
 

•Although the region experiences relatively low snow loads, the wind load requirement is clearly defined (0.3 kN/m²), combined with large temperature differences and windblown sand. The mounting system needed to provide reliable wind resistance and long-term structural stability throughout its lifecycle.
 

•With 150MW distributed across multiple industrial zones and hundreds of thousands of square meters of rooftops, the project involved complex coordination among multiple owners, material logistics, and parallel construction activities. This placed extremely high demands on standardization, organizational efficiency, and cost control.

•While ensuring absolute structural safety and roof integrity, installation efficiency had to be maximized to shorten construction cycles on individual rooftops, minimize impact on factory operations, and control overall project duration and labor costs.

3. Solution
 

•Instead of relying on a single clamp type, the solution integrates multiple clamp options into a modular. Based on on-site surveys, the most suitable and cost-effective clamp can be rapidly selected to achieve non-penetrative, secure installation across the majority of industrial metal roofs. This approach effectively resolves the challenge of unified system design for complex and diverse rooftop conditions.
 

•Structural calculations and reinforcement were carried out strictly in accordance with 0.3 kN/m² wind load and 0.15 kN/m² snow load requirements.

•The primary load-bearing components utilize high-strength H-profile aluminum rails with an increased wall thickness of 1.4 mm, significantly enhancing longitudinal load capacity and bending stiffness. This provides a solid material foundation to withstand wind loads typical of Northwest China and ensures long-term system stability.
 

•The flush-mounted, single-span vertical layout offers a clean and efficient configuration with fewer connection points. Pre-assembly and clear installation guidelines greatly increase daily installation productivity.

•The use of multiple clamp types further accelerates installation, as construction teams can avoid roof modifications or waiting for customized components—enabling a fast cycle of survey–design–installation.

4. Project Results
 

•The 150MW distributed PV system has been successfully completed and grid-connected across multiple industrial parks in Lanzhou New Area. Antaisolar’s customized solution effectively overcame the complex adaptation challenges of large industrial rooftops, achieving standardized, rapid deployment at scale.

•Safe and stable operation with clean energy supply: The system operates reliably, with generated electricity directly consumed by park enterprises. This significantly reduces electricity costs and carbon emissions, providing a stable supply of clean energy to support the green transformation of industrial parks in Northwest China.

•A replicable benchmark and scalable business model: The project has become a flagship example of large-scale “PV + Industrial Park” integration in Northwest China. Its successful implementation validates the feasibility of one-stop, modular solutions for complex industrial rooftops, offering a replicable engineering model and commercial pathway—from technical adaptation and safety compliance to large-scale project management—with strong industry reference value.

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