Main residential solar panel types
Homeowners commonly choose between three broad categories of photovoltaic panels. Each type has strengths and trade-offs in efficiency, appearance and price.
Common panel types
- Monocrystalline silicon: Panels made from single-crystal silicon cells. They offer the highest efficiency typically, a sleek dark appearance, and good performance in limited roof space. They are usually the most expensive per watt but provide strong long-term energy production.
- Polycrystalline (multicrystalline) silicon: Made from melted silicon crystals, these panels are slightly less efficient and have a speckled blue appearance. They are generally more affordable and a common choice for cost-sensitive installations with ample roof area.
- Thin-film (including amorphous silicon, CIGS, CdTe): Manufactured by depositing thin layers of photovoltaic material onto a substrate. Thin-film panels are less efficient per area but can perform better in low light and at higher temperatures. They can be lighter and flexible in some formats but usually require more roof space.
Other panel details to consider
- Efficiency: Higher efficiency means more power from the same roof area.
- Degradation rate: Lower annual degradation preserves long-term output.
- Warranty: Look at product and performance warranties — most are 10–25 years.
- Appearance: Some homeowners prefer uniform dark panels for aesthetics.
- Cost per watt: Compare installed cost per watt across options.
Additional components
Panels are one part of the system. Inverter type (string, microinverter, power optimizer), racking, wiring and monitoring also affect performance and cost. Choose panels that fit your roof constraints and budget, then match them with an inverter strategy that maximizes production and reliability.
Consult an installer for a site-specific recommendation that balances efficiency, aesthetics and price for your home.