It is not necessary to go off the grid in order to find green energy. Alternative and small scale power production is now a booming industry that is supported by laws that allow people to choose their own provider. The owner of a green home or farm can buy electricity from a traditional power plant or from a windmill array miles away. Visiting http://www.texasenergycompanies.net/green-mountain-energy-texas/ can give a few ideas, as a basic suggestion.
Although it is all connected to the same grid in practice, alternative energy has drastically supplemented regular power plants. It employs many independent power producers, which creates local jobs that are not dependent on a large corporation. Real people with a mind to be green are investing into energy as a side business. Choosing to directly patronize their effort is apart of the revolution.
In comparison an independent system can be annoying. Power must be stored in a large array of batteries in order to store the excess of peak production for lulls in production. It is often necessary to have both solar panels and a wind turbine to balance out the limitations of each. All this expense adds up. it is still possible to have a small battery array to see through power outages, but it is much cheaper on the whole to connect to the mainframe.
The grid has several advantages that offset the seeming disadvantage of not being self-sufficient. The first is that the grid is capable of large voltages. An off-the-grid system will normally store power as direct current and then convert to AC via adapters that are scattered throughout the house. Power inverters that support large wattages tend to be prohibitively expensive and also quite inefficient.
The grid eliminates these problems by eliminating the need for power inverters. While they are still handy to have, there is no need to fill an entire house with them. Inverters also cost money to repair as they contain fuses that are easy to break. Their final limitation is the need for large watts on occasion. A vacuum cleaner needs a lot of power in order to start and static might build up from the modified wavelength. It is a problem to think about.
Wind farms and solar arrays provide an economy of scale. Specialists deal with mechanical issues and efficiency on the whole is much higher. It takes a great deal of energy to manufacture solar panels, and that is another thing to think about from an environmental angle. As costly as solar panels can be, it might take a decade or more before the investment is recuperated.