There has never been a more profitable time to install a renewable source in your home. The prices of solar panels and wind turbines are falling al the time. You can now install a Photovoltaic system in your home for less than £6,000; it could soon be generating 40% of your household electricity.
Depending on where you are based, there may be lump sum grants available for installing Solar Panels - the Australian government offers up to $8,000 to ease the cost of this process. Other nations prefer to offer so-called Feed-in tariffs. These take their name from a project to pay users for any energy that they feed back into the grid. However the name is slightly misleading, since there are actually tariffs available just for generating the electricity in the first place.
The rate that these tariffs are paid will depend on where you are based. They are often set at the state level, since energy needs are often quite localised. You will be paid a set fee per kW. There are also grants and tariffs available for companies who want to integrate solar power cells into new buildings, or for schools wishing to install renewable energy sources.