Retrofitting coal-fired power plants for grid energy storage by
In this work, molten salt thermal energy storage is integrated with supercritical coal-fired power plant by replacing the boiler. Electric resistive heating is applied for the charging
Although coal-fired power plant has been coupled with thermal energy storage to enhance their operational flexibility, studies on retrofitting coal-fired power plants for grid energy storage is lacking. In this work, molten salt thermal energy storage is integrated with supercritical coal-fired power plant by replacing the boiler.
For instance, in the United States, converting coal-fired power plants into energy storage systems provides economic benefits, including reduced decommissioning costs, job preservation, enhanced grid reliability, and smoother integration of renewable energy.
A novel integration system of liquid CO2 energy storage and coal-fired power plant based on coal drying is proposed to improve the flexibility of coal-fired power plants further.
At present, large-scale energy storage technology is not yet mature. Improving the flexibility of coal-fired power plants to suppress the instability of renewable energy generation is a feasible path. Thermal energy storage is a feasible technology to improve the flexibility of coal-fired power plants.
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