Can You Lose Power with a Grid-Tie System During Outages?

Grid-Tie System Overview

A grid-tie system, also known as a grid-connected or grid-tied solar system, is designed to supply electricity to your home or business from the sun during the day and draw power from the grid at night or during periods of low sunlight. This type of system requires a connection to the utility grid and typically includes an inverter to convert DC power from the solar panels to AC power.

Outage Situations

When a grid outage occurs, your grid-tie system will automatically shut down to prevent backfeeding power onto the grid, which is a safety feature mandated by utility companies. This means you will lose power to your home or business, just like with a standard grid-connected electrical system. Some grid-tie systems may have additional features, such as a “grid tie mode” or “auto-isolation,” that allow you to temporarily switch to battery backup power in case of an outage, but these are not standard features on most systems.

Power Loss Mitigation

If you’re concerned about losing power during outages, consider adding a battery backup system to your grid-tie system. A battery bank can store excess energy generated by your solar panels during the day and supply power to your home or business during the night or in case of an outage. A 5-10 kWh battery bank can provide several hours of backup power, depending on your energy requirements.