How many questions can you get right? Introducing trivia quizzes and fun facts about solar panels

can reduce carbon dioxide emissions in the atmosphere

Because solar panels generate electricity by harnessing sunlight, they can reduce the consumption of fossil fuels and, as a result, lower carbon dioxide emissions during power generation. Therefore, they are expected to serve as environmentally friendly clean energy.

April–May

While solar power is often thought to be more efficient in summer due to stronger sunlight, efficiency actually drops when temperatures get too high. In April and May, temperatures are moderate and daylight hours are long, so these months are considered the most efficient time of year for solar power generation.

Sustainable Energy

Resources like oil and coal are finite, but energy sources such as solar, wind, and geothermal can be used repeatedly and preserved for future generations. Energy that can be used continuously in this way is called “sustainable energy.” Solar panels are also attracting attention as a sustainable energy technology because they can be recycled and reused as various materials.

The introductory price has been getting cheaper year by year.

The price of solar panels has dropped significantly over the past few decades. In particular, over the last ten years, thanks to technological innovation and mass production, prices are said to have fallen to a fraction—down to as little as one-tenth—of what they once were. This has led to wider adoption by many households and businesses, greatly contributing to the spread of renewable energy.

polycrystalline silicon solar panel

Polycrystalline silicon solar panels are aggregates of multiple crystals. Compared to monocrystalline silicon, they have slightly lower energy efficiency, but their manufacturing process is simpler and more cost-effective. Therefore, they are often used in cost-sensitive applications such as residential installations and solar power plants.

Monocrystalline silicon panel

Monocrystalline silicon panels have high conversion efficiency because they are made from a single crystal, but the use of high-purity silicon makes manufacturing costs higher. On the other hand, polycrystalline silicon and amorphous silicon types have lower production costs, but their efficiency is somewhat inferior.

about 25 degrees

The optimal operating temperature for solar panels is around 25°C. When the temperature rises above 25°C, power generation efficiency gradually decreases. In fact, solar panels can sometimes generate electricity more efficiently on cool days in spring or autumn than on very sunny midsummer days.