Against the backdrop of the accelerated global push towards carbon neutrality and carbon peak, the power industry is undergoing a profound green transformation. Transformer oil, as a core material for power equipment, its environmental performance, especially its biodegradability, has become a key indicator for evaluating a company's technological strength and social responsibility. In this field, Jiangsu Shuangjiang Energy Technology Co., Ltd. has taken the lead with its self-developed Depu Shi natural ester insulating oil, not only filling the domestic technological gap but also maintaining its leading position in the industry with its outstanding environmental performance and market presence.

For a long time, traditional mineral insulating oil has restricted the sustainable development of power equipment due to its poor fire resistance and the pollution it causes to soil and water sources in case of leakage. The emergence of Depu Shi natural ester insulating oil has completely changed this situation:
Depu Shi natural ester insulating oil is made from natural esters extracted from plant seeds and can be 100% biodegradable in the natural environment, avoiding long-term damage to the ecosystem from the source.
Significant carbon reduction benefits
The life cycle carbon emissions of each ton of the product are reduced by 3.18 tons compared to mineral oil, significantly contributing to the low-carbon transformation of the power industry.
Enhanced safety and performance
Its high flash point and flame retardant properties significantly reduce the risk of fire, while also delaying the aging of insulating paper and extending the service life of transformers, achieving a balance between safety and economic benefits.
This technological breakthrough not only responds to global environmental policies but also provides a green guarantee for the stable operation of new energy projects such as offshore wind power and photovoltaic power stations. 

A typical case
The Deppus natural ester insulating oil produced by Shuangjiang Energy has been successfully applied in the 180-megawatt offshore photovoltaic power station of Dongshan Xingchen of China Three Gorges Corporation, becoming one of the core materials for the first grid-connected power generation project in high-wind-speed sea areas in China. 

As a national high-tech enterprise and a specialized, refined, distinctive and innovative enterprise in Jiangsu Province, Shuangjiang Energy has established an absolute advantage in the field of biodegradable transformer oil through continuous innovation. Technical advantages
With multiple invention patents, we have achieved full autonomy and control over the entire process from raw material purification to production technology.
● A natural ester transformer oil and its preparation method (Patent No.: ZL202010908706.3)
● A high flash point transformer oil and its manufacturing method (Patent No.: ZL201410266649.8)
● A biodegradable environmentally friendly lubricating oil and its preparation method (Patent No.: ZL201711412389.0)
● An emulsified natural ester biodegradable lubricating material and its preparation method (Patent No.: ZL202210202085.6)
Depu's synthetic ester insulating oil is further optimized on the basis of natural ester, featuring excellent low-temperature fluidity and oxidation stability, making it suitable for extreme environments such as offshore wind power and electric locomotives. 

Production Advantage
Shuangjiang Energy has invested 300 million yuan to build an intelligent production base, adopting ABB intelligent blending technology and Swiss Macpherson vacuum filtration equipment. With an annual production capacity of 200,000 tons, it serves high-end fields such as ultra-high and extra-high voltage transformers. Not only has it passed the CNAS and CMA dual certifications, but it has also obtained the UR/FM certification. The R&D team has undertaken multiple national-level scientific research projects, and its technical strength has been recognized by leading domestic and international enterprises. 

Market influence
Depu's natural ester insulating oil has been applied in China's first 110-kilovolt natural ester insulating oil transformer and exported to the United States, Turkey, Pakistan and other countries, demonstrating international competitiveness. Partners include global giants such as PetroChina, ABB and Siemens, covering 34 provinces and cities as well as the markets along the "Belt and Road". 

Amid the wave of green transformation in the power industry, Shuangjiang Energy will take the DepuSi insulation oil series as its core, not only addressing the environmental protection pain points of traditional materials but also driving industrial upgrading through technological innovation. In the future, as the global carbon neutrality goal deepens, Shuangjiang Energy will continue to lead the industry towards a more efficient, safe and sustainable direction, injecting more green momentum into the energy sector of China and the world.