GridSync is a platform that aggregates and optimizes the use of distributed energy resources, such as electric vehicle (EV) batteries and balcony solar installations, to support the national grid. Leveraging the concept of electric bus depots supporting the UK National Grid, GridSync will create a network of connected EVs and small-scale solar systems. Users can opt-in to allow their EV batteries or solar generation to be utilized by the grid during peak demand or supply shortages. The platform will manage charging and discharging schedules, ensuring user convenience and battery health while providing valuable grid services. This addresses the growing need for grid stability with increasing renewable energy adoption and EV penetration, and also provides a revenue stream for EV owners and solar system owners.