BEIJING, Aug. 8 (Xinhua) -- In Ningde City at southeast China's Fujian Province, an offshore fish farming micro-grids project that integrates wind and solar power generation, storage, and utilization is enabling local farmers with green and more economical fish culture.
The project, jointly developed by a local new energy firm and Ningde Power Supply Company, provides clean energy-based uninterrupted power supply for the offshore fish farming facilities there.
Built on waters of Sandu'ao, a major fishery for large yellow croaker farming in China, local fish farming facilities feature grid-shaped rafts built over underwater net cages and simple sheds on the rafts for fish farmers to live in.
Apart from the wind turbines with both vertical and horizontal axes, floating solar arrays and shed roof solar panels also help guarantee long-lasting clean electricity supply for the offshore fish farming facilities.
Alongside the gradual improvement in fish culture-related energy technology, "our large yellow croakers grow in a greener, safer and more eco-friendly way and we are capable of product supply throughout the year," said Song Xiangguo who takes charge of mariculture business of Fujian Sandu'ao Food Co., Ltd.
In the company's nursery fisheries that demand oxygen supply of 24 hours a day, the floating solar arrays with related energy storage devices eliminate fish farmers' worries about power failures, according to Song.
For every grid-shaped fish farming raft, two smart energy storage devices with 225.6 kWh of battery capacity are equipped to access clean power, store electricity and provide charging for battery-powered ships.
Together with the wind turbines, the solar power generating, storage, distribution and charging facilities of the micro-grids project can help consume about 280,000 kWh of clean electricity and reduce carbon emission of around 243.6 tonnes every year.
After State Grid Fujian Electric Power Co., Ltd., parent of Ningde Power Supply Company, revved up facilitation to electricity-powered vessels and charging facilities in sea areas of Ningde City in recent years, fast charging piles have been erected in five key fisheries in Fujian Province.
Compared to the past when diesel engines of fishing vessels were usually noisy and produced air pollutant, the battery-powered ships widely used now are more economical and environmentally friendly, said Chen Hougui from a local mariculture, processing and sales firm.
(Edited by Duan Jing with Xinhua Silk Road, duanjing@xinhua.org)
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