Traditional thermal power units exhibit slow adjustment speeds, long response times, and low regulation accuracy in frequency regulation. Moreover, frequency regulation increases thermal power unit losses, reduces operational efficiency, and frequently participating in frequency regulation shortens unit lifespan. SIFANG's combined thermal power and BESS frequency regulation solution effectively alleviates the frequency regulation burden on thermal power units, enhances their frequency regulation capabilities, and helps improve the AGC frequency regulation comprehensive performance index by over 40%, with a more than 75% increase in frequency regulation mileage, significantly boosting frequency regulation revenue.