"Off-grid living" means the disconnection from conventional grid energy and your power generation from alternative sources such as solar power, wind power, etc. A lot of people want an eco-friendly lifestyle and a healthy world.  Removing the grid reduces the use of fossil fuels, decreases the carbon footprint, and contributes to a clean and sustainable world. Unfortunately, it is illegal in the US to disconnect from the public utility system completely. Additionally, some countries are creating a grid-tied solar power system. The power generated by your solar panel is used in a grid-tied system to operate your appliances at home. If you don't have enough electricity, you can use conventional grid power along with it.  This would result in a drop in your energy bills. The excess power generated by the solar panel is fed back to the grid in return for energy credits. These energy credits can be used during wet weather and evenings. Some energy companies are also paying you for this excess electricity.