Core Viewpoint - The introduction of the first high-altitude environmentally friendly transformer using soybean oil in Maduo County, Qinghai Province, marks a significant advancement in sustainable energy technology in ecologically sensitive areas [1][12]. Group 1: Technology and Innovation - The 10 kV transformer operates using modified soybean oil instead of traditional mineral oil, which is difficult to decompose and poses environmental risks [3][4]. - Soybean oil has a nearly 100% biodegradation rate, significantly reducing pollution risks in case of leaks, and has a higher ignition point, enhancing operational safety [3][4]. - The development involved extensive research to improve the oil's resistance to aging and low temperatures, crucial for high-altitude environments [4][6]. Group 2: Environmental Impact - The transformer has a capacity of 400 kVA and uses approximately 275 kg of oil, expected to reduce carbon emissions by 660 kg per unit over its lifecycle, equivalent to the annual carbon reduction of planting 70 trees [6]. - The environmentally friendly oil is less harmful to the internal insulation materials of the transformer, potentially extending its service life by over 30% and reducing maintenance costs [6]. Group 3: Implementation and Future Prospects - The first pilot transformer was successfully tested in Xining four months prior, demonstrating reliable performance and paving the way for broader application in challenging environments [7][11]. - The successful deployment in Maduo County, at an altitude of 4,300 meters, showcases the technology's adaptability and reliability under extreme conditions [11]. - The initiative represents a replicable model for eco-friendly power grid construction, allowing for infrastructure development without compromising environmental integrity [11].