They are designed to manage the amount of energy that a solar system can export to the grid. ELDs help prevent grid oversupply, ensuring reliability and stability. There are multiple different methods by which ESS can manage export, including the use of traditional relays as well as Power Control Systems t at have recently been refined under a common standard. . t up for Zero Export. Even in Off-Grid Mode, there are instances where you could potentially export to the grid when you do not intend to, and this guide is bui se of other settings. This keeps power from flowing in or ut of the Grid Input. See. . The Tigo EI Residential solution leverages DC-coupled batteries and DC-to-DC optimization at the module level.