There are three main types of solar projects which are usually developed :-

1. Solar power projects 
 To convert sunlight into electricity using solar energy.
 Use :-
 To generate electricity to serve lots & lots of families

2. Solar thermal projects 
 Harness heat from sunlight to generate hot water
 Use ;-
 To generate hot water to lots & lots of families

3. Solar thermal power projects
 Harness heat from sunlight using concentrated mirror/lenses to generate heat which in turn generate electricity
 Use ;-
 To generate electricity to lots & lots of families