What are the types of Solar Panels? There are four main types of solar panels: monocrystalline, polycrystalline, thin-film, passive emitter, and rear cell (PERC) solar panels. Each solar panel type is unique in its materials, functions, advantages, disadvantages, cost, and. Solar panels, or photovoltaic (PV) modules, are devices commonly used on rooftops to collect sunlight and convert it into electricity. Solar energy is one of the most efficient, economical, and non-polluting renewable energy sources. What kind of home do you live in? When you're considering whether to get solar panels, it's a good idea to look into all the different types, to ensure you choose the best. Record Efficiency and Cost Reduction: In 2025, photovoltaic technology has reached commercial efficiency levels of 20-26% for monocrystalline panels, while costs have plummeted 85% since 2010. With residential systems now priced at $2. 00 per watt and utility-scale installations at $0.