350MW Fishery–PV Tracking System | Hubei, China

1. Project Overview

•Project Background: Located in the vast water areas of Hubei Province, this project is currently the largest fishery–PV photovoltaic power plant in Hubei Province and a key demonstration project promoting the integrated development of ecological protection and clean energy in the Yangtze River Basin. The project adopts an integrated model of “PV + water system management + ecological aquaculture”, aiming to achieve the coordinated development of efficient three-dimensional utilization of water resources, regional ecological improvement, and large-scale green power generation.

• Project Requirements: The site is characterized by a humid climate and extensive water surfaces, presenting specific challenges related to corrosion resistance and ecological compatibility. The client required a large-scale PV system solution capable of long-term stable operation in humid environments, maximizing energy yield, and coexisting harmoniously with aquaculture activities. Key requirements included: 1) The mounting system must demonstrate excellent corrosion resistance to withstand a C3 atmospheric corrosion environment. 2) Precise control of module-to-water clearance, balancing power generation efficiency, structural safety, and underwater ecological space. 3) Overall system reliability to ensure long-term stable operation under lake-area wind and snow loads.
2. Project Challenges

2.1 Long-Term Corrosion Protection in a Humid Environment
• The project area is classified as C3 atmospheric corrosion, with prolonged exposure to high humidity. This places stringent requirements on the long-term corrosion resistance of all metallic components within the PV mounting system.

2.2 Spatial and Ecological Coordination in a Fishery–PV Scenario
• As a fishery–PV project, the PV array must not interfere with underwater aquaculture operations. The minimum module clearance of 2.0 meters above water level must be precisely designed to ensure system safety (including moisture protection and maintenance access) and optimal incident angles, while providing sufficient space and light conditions for aquatic life and farming activities.

2.3 Structural Safety under Lake-Area Meteorological Conditions
• The site has a basic wind pressure of 0.31 kN/m² and a basic snow load of 0.33 kN/m². Although these values are lower than those in northern regions, the open water surface offers little natural shielding, and gust effects must be considered. This poses a critical challenge to the wind resistance and structural stability of the tracking mounting system.

3. Solution
Antaisolar provided a integrated solution centered on the “TAI–Universal” 2P single-axis horizontal tracking system.

3.1 Corrosion Protection: Enhanced System Beyond C3 Standards
• All steel structural components adopt hot-dip galvanization combined with enhanced composite anti-corrosion coatings. This system not only meets C3 environmental requirements but also provides additional protection for long-term operation in humid water environments, ensuring a service life exceeding 25 years for the mounting structure.
• Critical fasteners are manufactured from stainless steel materials, eliminating corrosion risks at connection points.

3.2 Spatial and Ecological Coordination: Customized Elevation and Tracking Design
•The minimum module clearance is strictly controlled at 2.0 meters above water level. This height effectively avoids direct exposure to water surface fluctuations and moisture, enhances ventilation beneath the array to reduce module operating temperatures, and allows sufficient sunlight penetration to the water surface. The design ensures that power generation above and aquaculture below operate independently yet harmoniously, achieving true non-interference.

3.3 Structural Safety: Refined Load Design and Reinforcement
• Structural simulations and system design are based on site-specific load parameters of 0.31 kN/m² wind pressure and 0.33 kN/m² snow load. The system is equipped with Antaisolar’s proprietary SmartTrail intelligent tracking control system, enabling precise tracking of up to ±60° in the east–west direction and effective response to extreme weather conditions.
•Through a multi-drive mechanical linkage system, this design significantly enhances overall torsional rigidity and structural stability, effectively dispersing gust loads and ensuring safe operation in lake-area wind conditions.
4. Project Results

• As the largest fishery–PV photovoltaic power plant in Hubei Province, the project is expected to generate approximately 460 million kWh of electricity annually, saving around 130,800 tons of standard coal per year and reducing CO₂ emissions by approximately 321,300 tons annually. The project makes a substantial contribution to optimizing Hubei’s energy structure, while promoting ecological protection and green industry development in local water areas.

• This successful implementation validates the deep integration of intelligent tracking technology with fishery–PV applications. It provides valuable technical benchmarks, mature engineering experience, and proven economic viability for replicating “PV + ecology” projects across humid water bodies and lake regions, carrying significant demonstration value for the industry.

For more information, please visit: https://www.antaisolar.com/
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