The term off-grid refers to not being connected to a grid, mainly used in terms of not being connected to the main or national transmission grid in electricity. In electricity off-grid can be stand-alone systems (SHS) or mini-grids typically to provide a smaller community with electricity. Off-grid electrification is an approach to access electricity used in countries and areas with little access to electricity, due to scattered or distant population. It can be any kind of electricity generation.
Off-the-grid homes are autonomous; they do not rely on municipal water supply, sewer, natural gas, electrical power grid, or similar utility services. A true off-grid house is able to operate completely independently of all traditional public utility services. The idea has been recently popularized by certain celebrities including Ed Begley, Jr. who stars in Living with Ed television show on the Home & Garden Television network. Actress Daryl Hannah promotes off-grid living and constructed her home in Colorado according to those principles, as does survival expert and Dual Survival co-star Cody Lundin who lives in a self-designed, passive solar earth home in the high-desert wilderness of Northern Arizona, collecting rainwater, composting waste and paying nothing for utilities.
Taken from: LIVING OFF THE GRID/FACEBOOK.