2. How to Calculate How Many
Solar Panels You Need
• Calculating how many solar panels are necessary to
power your house can prove to be a demanding task.
And that is because there are many things that have to
be taken into consideration. The fact that different
households have different energy needs is common
sense. The good news is there is a straightforward
algorithm that can help you calculate exactly the number
of solar panels for you house.
• To make this calculus, you need your monthly electricity
bill. It will help you find out your electricity usage. Also,
you need to know how many hours of sunlight your
house receives every day, and how many watts your
solar panels can produce.
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3. 1. Calculate the electricity usage of your house
First, you need to determinate how much electricity your house
consumes, on average. This information can be found on your
monthly electricity bills. The energy you consume differs from
month to month, so you need an average number. Because
you consume more energy in winter, you could take one of the
winter bills as a basis for your calculus. On your bill, you will
see the number of kilowatt hours of electricity you have used
during that month. Assuming that is the amount you use every
month, divide that number by the number of days in a month,
to find out your daily energy usage.
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4. 2. The number of sun hours in your area
The solar panels produce energy as long as the sun is shining. How
many hours does your house enjoy sunlight every day? Again, take
winter days as a base, because, in winter, your house receives the
least sunlight. Let’s assume your house receives sunlight 6 hours per
day.
3. The amount of energy per hour your panels need to produce.
You know how much energy per day your house needs. Multiply that
number by 1000 to transform the kilowatts in watts. Divide that number
by the number of sun hours (6 in our example). Now you know how
much energy the panels have to produce per hour.
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5. 4. Calculate the number of necessary panels
A final piece of information is the number of watts your panels
can produce. When you buy the panels, you have to pay
attention to the number of watts written on their label. An
average panel produces around 100 watts, but larger panels
can produce more. If you want to buy 100 watt panels, divide
the number of watts per hour you calculated in the last step by
100, and you will find out how many panels you need to power
your house!
For more information on how to make a solar oven go to
http://advantagesanddisadvantagessolarenergy.com

6. • For more information on how many solar panels to use go to
http://advantagesanddisadvantagessolarenergy.com
• You'll discover...
• The facts about solar energy
• Exactly how solar energy works
• The price of installing solar energy
• Solar energy for home and business
• How to build a solar energy system
• How to make a solar oven
• ...and lots more! The information is ideal for students learning
about solar energy and home owners who are looking into
installing solar panels in their home.
• Please email any questions to
support@advantagesanddisadvantagessolarenergy.com