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Off-the-grid
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 electrical grid. In electricity, off-grid can be stand-alone power system 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. The term off-the-grid (OTG) can refer to living in a self-sufficient manner without reliance on one or more public utilities.
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.〔(TheRenewablePlanet.com )〕 who stars in ''Living with Ed''〔(livingwithed.net )〕 television show on the Home & Garden Television (HGTV) 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,〔(off-grid.net )〕 who lives in a self-designed, passive solar earth house in the high-desert wilderness of Northern Arizona, collecting rainwater, composting waste, and paying nothing for utilities.〔(【引用サイトリンク】title=About Cody Lundin )〕
==Electrical power==
Electrical power can be generated on-site with renewable energy sources such as solar (particularly with photovoltaics), wind, micro hydro, geothermal; with a generator or Micro combined heat and power with adequate fuel reserves. Such a system is called a stand-alone power system. In addition, it is possible to simply eliminate electric power such as in Old Order Amish and Old Order Mennonite communities.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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