Template:Performance Relationships

    Table of contents

    To evaluate <energy system> systems it is important to be able to understand the relationships affecting the system performance, efficiency and effectiveness.

    Photon Flux

    This is how many photons actually strike the solar panel, it is most commonly affected by the size and orientation of the panels.

    • Array orientation - The power output of solar panels is greatly affected by their orientation and tilt angle to the sun. Because the suns position and angle changes in the sky depending on the time of year, solar systems are most efficient if used with a solar tracking mechanism. Static mounted systems can still provide adequate performance if optimized using sun charts to determine the best position and angle.
    • Array size - Solar panels are broken into cells which are then connected in parallel. This allows the provided voltage/flow to remain constant no matter the number of cells, this means the power output of a solar system is directly proportional to its area.
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