Which type of inverter is referred to as bimodal or multi-modal?

The type of inverter referred to as bimodal or multi-modal is one that is capable of operating with or without utility power. These inverters are designed to function both in conjunction with the grid and independently when grid power is unavailable. This dual functionality allows them to manage different power sources—such as solar panels and battery storage—effectively depending on the situation.

When the electrical utility grid is operational, these inverters can synchronize with it, ensuring that energy flows efficiently and safely both to and from the grid. In circumstances where the grid goes down, these inverters can switch to off-grid mode, relying on stored energy from batteries or generating power from solar panels directly. This flexibility is essential for applications requiring continuous power availability regardless of grid status, making bimodal or multi-modal inverters a popular choice for homes and businesses that prioritize energy resilience.

The other options describe different inverter types or setups that do not possess this dual capability. For instance, grid-tied inverters exclusively rely on the utility grid for their operation and cannot function in its absence, while stand-alone inverters are specifically designed for off-grid usage and lack connection to the grid entirely. Similarly, batteries connected directly to the grid do not refer to inverters at all but rather to storage