Technology application and promotion of supplying heat, hot water and power generation provided by solar energy were started earlier in the railway industry. The effect of energy saving and environmental protection is obvious. From the perspective of the future development, the application of the technology of photovoltaic power generation provided by solar energy will have greater potentials in the field of energy use in railway traction and it will also be the key factor to further optimize the structure of energy consumption of railway traction.%铁路行业比较早地开始了太阳能供暖、供热和发电等技术的应用和推广工作，节能环保效果比较明显。从未来发展视角看，太阳能光伏发电技术在铁路牵引用能方面潜力比较大，也是铁路牵引能耗结构进一步优化的关键。
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