Question: How many 80 watt solar panels to run a house?
Answer: Determining how many 80-watt solar panels needed to run a house requires some simple calculations before purchasing the solar panels. First, determine the amount of electricity that is used each month to power the house. Reviewing a monthly electricity bill from previous months can give a good estimate on the approximate amount of kilowatt-hours that are used.
Example: 600 kilowatts of electricity is used each month. There are approximately 1000 watts of electricity in 1 kilowatt of power. To determine the monthly watts used, multiply the number of kilowatts by 1000 watts. In the example above, the approximate usage is 600,000 watts each month.
To find out how many 80-watt solar panels needed to run a house, simply divide the 600,000 watts needed by 80 watts for each solar panel to determinate the approximate number of panels needed.
Example: 600,000 watts / 80-watt panels = 7500 solar panels
This calculation proves that 7500 solar panels that are 80 watts each will provide enough solar power for a house that uses 600 kilowatts of power each month. The solar generated electricity is stored in a battery cell ready for use each day.
{ 5 comments… read them below or add one }
The above math assumes only 1 hour of sunlight per month. I more reasonable scenario would be as follows. 600000 watts divided by 80 equals 7500 divided by 30 days equals 250. divide that by 4,5 hours of daylight per day and you get 56 panels.
To check 56 panels x 80 watts = 4480 watts per hour. 4480 x 4.5 hours sun per day = 20160 watts per day. 20160 x 30 days per month = 604800watts.
Hi, I happen to be a little thick, will someone please tell me which of the above correctly answers the question “how many solar panels (and of which size) are needed to power an average house? Preferably pertinent to the south east of England . bill
John is correct. The original poster’s 7500 solar panels would cover a number of acres.
My neighbor across the street here in Palm Springs, CA has just gone solar with a total of 36 panels. In addition to household use, I have a swimming pool to power also so I expect I will need about 40 panels, covering about 3/4ths of my south-facing roof area.
i nee to know that how many bulb does it use ,1 80 watt solar module with 45 amper bettery.
I am interested to calculate how many solar panels,inverter, DC battry nedded to handel a window AC unit, capacity one Ton with 3/4 ac horse power.
Thank you
sam
p.c. My home in Phoenix, Arizona