When starting to evaluate solar electric systems for your home, you may ask: What is solar radiation? How is it related to solar power? Good questions. These topics are explained in our articles dedicated to explaining home solar power.This article, on the other hand, dives into defining how kilowatts are calculated based upon the energy output of your solar array. We will also explain the differences between parallel and series connect solar cells and arrays.The average American home uses about 25 kWh of electricity per day. The following example illustrates how to calculate the power produced by a residential solar energy system. Looking over a solar radiation grid, we can determine that a residence gets five daylight hours of solar radiation in one day which is then averaged out over the entire year.Solar radiation maps are highlighted on may websites throughout the Internet. You can do a quick search for “solar radiation” to find one. They essentially plot the amount of sunlight based upon time of year and physical location that will hit the United States in any given area.Calculating the power from a solar energy systemDivide the average kWh per day by the average sun hours per day. For […]

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