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The system stores energy in the molten salt by using a molten salt storage tank, and generates steam by heat exchange between the molten salt and water when the heat is required. The steam temperature is 120-200 °C, and the steam flow is 0.05-10 t/h. This technology is an effective technical way to replace coal burning and the solve haze in the north. It is a technology explicitly supported and promoted by national policies such as the National Air Pollution Prevention Action Plan, National Renewable Energy Consumption, and Power Peaking and Valley Filling.