At this point you can use the calculation procedure described in the previous section.
How many kwh per square foot of solar panel.
Considering 6 peak sun hours per day and 300 watt panels you need 16 to produce 700 kwh each month.
When dividing these values you obtain 0 35 kwh per square foot assuming 0 35 kwh for a 2 000 sq.
For instance if you have a panel that puts out 265 watts and is 65 4 by 39 inches in size the energy produced per square foot would be around 15 watts.
A number of larger consumer products or add ons can significantly change your annual kilowatt hour requirements and thus can greatly impact how many panels you will need.
Perhaps one of the most difficult aspects of sizing a solar panel system is estimating annual energy usage for your household.
While this does not sound like very much square feet do add up pretty quickly.
System size kw square footage needed for low efficiency 16 square footage needed for medium efficiency 18 square footage needed for high efficiency 22 5 kw.
From the example of a standard residential polycrystalline solar panel we used above we know that if one 275 watt solar panel is 18 85 square feet then 1 kw 1000 watt of panels will require 3 63 of such solar panels and so will take up 68 42 square feet.
How much energy can a solar panel produce per day and per month.
Home the estimated electricity consumption is 700 kwh.
Number of solar panels per square foot of roof space.