Abstract: Green power direct-connection is a novel energy production and consumption mode that promotes the local consumption of renewable energy and meets enterprises' demands for green energy use. To advance its practical application, this study defines the green power direct-connection mode, develops a wind-solar-storage configuration model, and carries out project application research based on existing policies and local implementation rules for green power direct-connection. A wind-solar-storage configuration model targeting optimal economic performance is established. Time-series simulation is employed for multi-objective optimization, and a calculation method for the comprehensive end-user electricity tariff under the grid-connected mode is proposed. The proposed model is validated through optimization of the wind-solar-storage configuration for a 10 kV industrial and commercial user in Jiangxi Province. Economic analysis further demonstrates that a well-designed wind-solar-storage configuration enables green power direct-connection projects to achieve superior economic performance while satisfying green and low-carbon requirements. These findings can provide theoretical support and practical references for the planning, design and implementation of green power direct-connection projects.