**One of the first questions that you will ask is: how many kilowatt hours (kwh) of electricity will my solar system produce where I live? That’s a great question, and one which everyone should ask themselves when you buy a solar system.**

There are several ways to figure this out. This post will explain the easiest way to determine the electric production for a solar system.

-The size of the solar system that we will evaluate is going to be for a 2.0 kw PV solar system. That is equal to a 2000 watt solar system because there are 1000 watts in a kw.

-The location that we will use to come up with an average sunlight hour number is Las Vegas Nevada. The average number of sunlight hours there is approximately 6.4 hours per day.

-We will use an energy loss amount of approximately 15% when the current goes from DC to AC

So, here is the equation:

2000 wattsDC X 6.4 hours/day = 12,800 watt hoursDC/day = 12.8 kwh/day on average in DC

Next, we will factor in the energy loss of 15%:

12.8kwh X .15= 1.92kwh of lost energy in the conversion to Alternating Current

Next we will figure out how much AC current is left to use:

12.8kwhDC-1.92kwh(lost)= 10.88kwh AC produced per day

Next, we will figure out how many kilo watt hours are produced each month on average:

10.88kwhAC/day X 30(days in the average month) = 326 kwhAC produced on average per month

Next, we will figure out how many kilo watt hours are produced on average per year:

326 kwh AC per month X 12(moths in the year) = 3,912 kwh per year

SO, in Las Vegas, Nevada, you could expect a 2.0 kwh solar system to produce approximately 3,912 kilo watt hours of electricity per year.

One of the assumptions is that there would be no shade hitting the solar panels as that would adversely affect the electricity production.

**When you are buying a solar system in Las Vegas, be sure to ask the solar professional to explain the expected sunlight hours to you. This is quite possibly the most important bit of data you need to know before writting any checks.**