the uses of electromagnetic generators* or electrical generators is:Hospitals, factories, power stations,restaurants, houses, government buildings and commercial towers or business, markets and contracting companies ..... etc.
And generators classified into two main sections:-
-1-prime generator (in average used for more than8 working hrs per day)
-2- standby generator(in average used for8 hrs or less than per day)
And the value of the generators varies between if you need the generators rental or sale (used one or new)
* we used this term or name because the electricity generation according on magnetism field and Faraday law