Sizing Calculator

How Many Sun Hours A Day Do You Get?
Zone1    6 hours
Zone2    5.5 hours
Zone3    5 hours
Zone4    4.5 hours
Zone5    4.2 hours
Zone1    3.5 hours

The figure at the left indicate the average (over the course of the year) amount of insolation (full sun hours) for these zones. These figured baesed on the average yearly, consequently, systems based on these figures will be provide more power in summer and less in winter. Winter figures for daily solar gain may be from 25% to 50% LESS than these average figures. We do have additinoal insolation data available for others parts of world, email us the location of your solar projects.


Grid Tie Calculator

Grid-Tie Energy System Size Calculator
1. How much electricity do you use each month?
Look at your electric bills from the past 12 months (or more) and find the average number of Kilowatt Hours (KwH) per month. Put this number in the space to the right
2. What percentage of your house/business power usage will be supplied by solar/wind power from this system? If you want to produce 100% of your electricity, put 100. %
3. How many Peak Sun Hours do you get per day? Look at the Solar Map below to find this number.
Minimum System Size:

Off Grid Calculator

Solar Load Evaluation Calculator
Appliance Quantity Watts
(V x A)
Mult. * 1.5 for AC conversion
Hours On per Day Watt Hours per Day

Total Watt Hours per Day:
Watt Hours Required Assuming Inherent Efficiency Loss:

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