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Getting started might seem like a
daunting task, but it's not as complicated as it
first seems. With only an electrical bill, you
can determine the minimum system size you'll
need.
To begin, you'll need the average
monthly electrical use--which you should be able
to find on your utility bill. This number will
be in kWH (kilowatt-hours).
Follow these steps to determine
your minimum system size:
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Record average monthly
kWH electrical use: |
__________kWH |
|
|
Multiply line 1 by the
percentage you want the solar system to
produce: |
__________kWH |
ie: 1000kWH X 50% =
500kWH |
|
Divide by 30 for the
daily output from your solar power
system: |
__________kW |
|
|
Divide by the daily
average sun hours for your location:
|
__________kW |
See
on
our calculator
|
|
Divide by 70% to
compensate for system efficiency: |
__________kW |
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