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Do solar calculators work?

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  • Do solar calculators work?

    A few months ago a ran a solar calculator on my new home. I only have East and West slopes.
    I ran the calculator for each array.
    Today at least 6 weeks later I find the data is almost identical hour by hour. I have a time of use rate and the time frame the energy is produced is almost as important as the magnitude
    The roofs are 30 degrees and I would think that the max power time would be about 4 hours offset from each other rather than the same hour of the day. There is no way for a 30-degree east slope roof to peek at noon and the West 30 degree peak should be more like 2 PM rather than noon.

    I do not remember which calculator I used but I found the link here.