Solar thermal is generally a roof mounted system and a designed to provide domestic potable water. Solar thermal can be used for heating needs but requires a very large panel array and massive amounts of water storage tanks.
There are two types of solar thermal, pressurized and drain back "non-pressurized" each has its own pro's and con's
Solar photovoltaic (Commonly known as PV) is designed to provide electricity to the dwelling. The energy can be grid-connected or stand alone. If you are grid connected a special meter is used and if you do not utilize the energy produced the electric company must buy it back from you. Standalone systems (Commonly known as off-grid) have a battery system to store the excess energy created by the sun.
Photovoltaic "PV" system can either be roof mounted or ground mounted.
Solar systems have what is known as S.R.E.C's, solar renewable energy credits attached to them per a measured wattage. These are credits provided that are shared as an open commodity and traded. The Federal government has implemented that all energy providers have a certain percentage of their power driven by solar energy by a specific deadline date. If an energy company does not own enough of their own solar energy they go to the market place and purchase these credits. Each state has their own value for each these S.R.E.C's.
Here at Shaw's we have been installing and maintaining the various solar styles for over 5 years and are here to help with any needs you may have.
"Chris took care of my problem quickly and he is the nicest guy! I could tell by the way he responded to my dog that we were gonna get along just fine! Thanks Chris!"