Several factors influence the overall cost of a solar panel installation. Firstly, the type of solar panels selected—monocrystalline, polycrystalline, or thin-film—plays a significant role. Monocrystalline panels tend to be more efficient and have a longer lifespan, leading to a higher upfront cost. In contrast, polycrystalline panels are generally more affordable but may have a slightly lower efficiency rate. Thin-film solar panels, while less common, are another budget-friendly option but can require more space for the same energy output.