There are two types of solar panel kits available for purchase today. Grid-tied kits designed to provide power into the normal electrical grid from your home and off-grid kits designed to charge up battery bank.
[pdf] Grid-tied systems are solar panel installations that are connected to the utility power grid. With a grid-connected system, a home can use the solar energy produced by its solar panels and electricity that comes from the utility grid.
[pdf] The appropriate slope for solar panels is typically between 30 to 45 degrees, but it can vary depending on latitude, desired energy efficiency, and local climate conditions. The angle of installation plays a critical role in optimizing the sunlight absorption throughout the year.
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