FAQ About Clean Energy

Solar panels, also known as photovoltaic (PV) modules, come in different types based on the materials and technologies used. Each type has its own efficiency characteristics and applications. Here are some common types of solar panels and their typical efficiency ranges:

Monocrystalline Solar Panels:

• Efficiency Range: 15% to 22%
• Description: Monocrystalline panels are made from single-crystal silicon, which gives them a uniform black color. They are known for their high efficiency and space-saving design.

Polycrystalline Solar Panels:

• Efficiency Range: 13% to 18%
• Description: Polycrystalline panels are made from multiple crystal structures of silicon, resulting in a blueish appearance. They are generally less efficient but more affordable than monocrystalline panels.

Thin-Film Solar Panels:

• Efficiency Range: 10% to 12%
• Description: Thin-film panels use different materials, such as amorphous silicon, cadmium telluride (CdTe), or copper indium gallium selenide (CIGS). They are thinner and often more flexible, making them suitable for certain applications, but they generally have lower efficiency.

Bifacial Solar Panels:

• Efficiency Range: Varies (up to 30% gain in energy yield under certain conditions)
• Description: Bifacial panels can capture sunlight from both the front and rear sides, making use of reflected light from surrounding surfaces. This unique design can increase energy generation under specific conditions.

Heterojunction Solar Panels (HJT):

• Efficiency Range: 20% to 24%
• Description: Heterojunction panels combine crystalline silicon and thin-film technologies. They can achieve higher efficiencies than traditional silicon panels.

PERC (Passivated Emitter and Rear Cell) Solar Panels:

• Efficiency Range: 17% to 22%
• Description: PERC technology optimizes the rear-side of a solar cell to capture more sunlight and improve overall efficiency.