"Off-grid" refers to a system or property that is not connected to the main electricity grid. Instead, it relies on alternative sources of energy, such as solar panels, wind turbines, or generators, to power its electrical needs.

Off-grid systems are often used in remote locations where it is not practical or cost-effective to connect to the main electricity grid. They can also be used as a way to reduce reliance on fossil fuels and increase energy independennce.

An off-grid system typically includes a number of components, such as solar panels or wind turbines to generate electricity, batteries to store excess energy, and a backup generator to provide power in case of an emergency. It may also include a inverter to convert the electricity generated by the solar panels or wind turbines into a form that can be used by appliances and other electrical devices.

Off-grid systems can be a cost-effective and environmentally friendly way to power a home or business, but they do require careful planning and maintenance to ensure that they are reliable and efficient. It's important to consider factors such as the location and energy needs of the property, as well as the available resources and budget when designing an off-grid system.