Located in the National Photovoltaic energy Storage Experimental platform in Daqing, Heilongjiang Province, rows of blue photovoltaic panels are working with glow of snow under blue sky. This is China's first photovoltaic energy storage experiment and certification platform, it will provide scientific basis for making China pv and energy storage industry policy and technical standards. With high safety, low temperature resistance, high charge/discharge rate, long cycle life and other characteristics, Gree LTO energy storage system is successfully applied in the experiment platform, providing frequency regulation services for photovoltaic power generation systems. Gree LTO energy storage system has become an important part of the platform, it will help accelerate technology progress, application of achievements, and industry development.