Solar panels can be installed in both new and existing houses. In case of new houses the panel can be set on the roof from where the solar panel can directly absorb heat and sunlight. For existing houses solar panel can be fixed onto the brackets attached to the roof. Other than personal properties solar panels can be set at commercial buildings as well. solar panels for beginners are very useful as they can provide free energy source while the price of electricity and central heating fuel is increasing day by day. Besides they have long service life and high operation safety which make it preferred by people.