Solar PV power plants are specified in KWp, not KWH. KWp means Kilowatt Peak. Please read this link for more information.

So a quote for 100 KWp does not guarantee that you will get 100 units of electricity per hour. Typically a 100 KWp plant will produce 1, 50,000 to 1, 80,000 Units of electricity per year. The actual generation every month, week, day and hour will depend on various factors and location.