What defines an off-grid solar system?

An off-grid solar system is defined by its ability to operate independently from the electrical grid. This means that it is fully self-sustained, generating its own electricity through solar panels and typically incorporating battery storage to ensure a continuous power supply, even when sunlight is not available. Off-grid systems are particularly advantageous in remote locations where grid connectivity may not be feasible or available, allowing users to harness solar energy for their power needs without relying on an external electricity network.

The other choices do not capture the essence of what constitutes an off-grid system. For instance, while battery storage is often a component of off-grid systems, defining an off-grid system solely as one that relies on battery storage overlooks the crucial aspect of being independent from the grid. Similarly, being connected to the local utility would imply a grid-tied system, which fundamentally contrasts the independence of off-grid systems. Lastly, a solar power system that uses only one solar panel does not inherently define an off-grid system, as the system's connection status to the grid is what primarily distinguishes it. Therefore, the defining characteristic of an off-grid solar system is its capability to function entirely on its own, independent of any external electrical infrastructure.