Eigg's current electrical configuration diagram. “Island mode” is when a microgrid is disconnected from external forms of power and relies on self-generated power to power all systems within its purview. Although there are other inverters in the system, the one represented above the battery. In this study, an optimal scheduling of island microgrid is proposed, which uses seawater-pumped storage station as the energy storage equipment to cooperate with wind, photovoltaic and diesel generator. First, a mathematic formulation of seawater-pumped storage station with renewable energy is. When oceans, mountains, deserts, or other physical/economic barriers stand between customers and large electrical networks, GE Vernova's solutions offer a more consistent, reliable, cost-effective option for islanded grids and microgrids.