Solar Panels: Types, Systems, Pros & Cons
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📅 2/20/2026
Introduction to Solar Panels
Solar panels convert sunlight into electricity using photovoltaic cells, reducing reliance on fossil fuels.
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Types of Solar Panels & Systems
- Monocrystalline panels (high efficiency, 15-20%) vs. polycrystalline (lower cost, 13-16% efficiency).
- Thin-film panels are lightweight and flexible but less efficient (10-13%), ideal for portable use.
- Grid-tied systems feed excess power back to the utility, while off-grid systems use batteries for storage.
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Advantages & Disadvantages
- Pros: Reduces electricity bills by 50-90%, low maintenance, and zero emissions during operation.
- Cons: High upfront costs ($15,000-$25,000 for homes), intermittent power, and space requirements.
- Lifespan of 25-30 years with gradual efficiency decline (0.5% per year) after the first decade.
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