In this study, we propose and evaluate a charge and discharge scheduling method for a battery energy storage system (BESS) based on the day-ahead and intraday PV generation forecasts for a reduction in the PV curtailment. The BESS is used in the economic-load dispatching control (EDC) in the power system, which considers the unit commitment (UC) of conventional power generators. Numerical simulations are carried out to evaluate the proposed method assuming a power system model of the Kanto area of Japan.