If you’re considering moving to a solar power generation system for your home , you’ll need to determine how many solar panels you need Even a small number of panels can help make a serious dent in your monthly electricity bills . Those who would like to get rid of their electricity bills completely, though, will want to figure out how exactly how many solar panels are necessary to do so .
One thing you’ll need to do is to figure out the amount of electricity you use in your home per day . The easiest way to accomplish this is to look at your previous monthly electricity bills – the more you have on hand , the more accurately you can calculate your electricity usage . (You may be able to see your old bills online through your utility provider as well.) Use these bills to figure out the number of kilowatt-hours (kWh) you use per month . Divide the monthly figure by 30, and you’ll get a figure for your average daily electricity usage in kWh .
It’s important to also be aware of the insolation figures for your area . Insolation is a measurement of the amount of sunlight which touches a given surface area over time . Solar panels require direct sunlight exposure in order to produce electricity . Different solar panels have different requirements in terms of sunlight intensity in order to produce power . Sunlight exposure for a specific surface, of course, will tend to vary throughout the year . These variations, of course, are important with regard to solar panel performance . Every location has an average insolation value . Maps with insolation values can be found online . Once you have the insolation value, divide your kWh usage figure from the previous step by the insolation value to get the amount of power you’ll need your solar power system to generate daily .
Power loss is the last factor to consider . Even with more recent systems, there is still a certain amount of power loss during conversion . This can be tough to measure precisely , but it’s generally safe to use the figure of 25%, so if you multiply the figure from the previous step (kWh/insolation) by 1.25, you’ll get the amount of power you need with loss factored in . This final number shows you how many kilowatt hours of power you’ll need your system to produce per day, with loss and insolation factored in .
Divide this figure by the kWh output of your solar panel of choice to find out how many of these panels you’ll need to produce enough power for your everyday needs .
One of the foremost questions a homeowner faces when deciding on whether to install a home solar power system is, “How many solar panels do I need?” If you are curious to know the answer to this important question , you can check out, How Many Solar Panels Do I Need?
If you want to build your own solar panel, visit Build Solar Panel. You might also be interested in a mini course on how to build your own solar power system . Check out Solar Power Calculatorto sign-up for a 6 part mini course.
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